{"code":10000,"msg":"SUCCESS","data":{"page":1,"pageSize":15,"count":23,"list":[{"aid":44,"id":"53VT3qwhZ6NJEHH24iM6Mk","title":"ElasticSearch7.8+IK\u4e2d\u6587\u5206\u8bcd\uff0ckibana\u642d\u5efa","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1629702557","deleteTime":null,"updateTime":"1757054279","publishTime":1629708608,"deleteAt":null,"status":0,"content":"### Es+Ik\u5206\u8bcd\u90e8\u7f72\n- \u73af\u5883\u6784\u5efa\n``` shell\n# \u62c9\u53d6\u6307\u5b9a\u7248\u672c elasticSearch\u955c\u50cf\ndocker pull elasticsearch:7.8.0\n# \u5728Linux\u6839\u76ee\u5f55\u521b\u5efadocker\u6587\u4ef6\u5939\u5e76\u8fdb\u5165\u6587\u4ef6\u5939\nmkdir \/docker\ncd \/docker\n# \u4e0b\u8f7dIK\u63d2\u4ef6\u6587\u4ef6(\u5982\u679c\u63d0\u793a\u6ca1\u6709wget\u547d\u4ee4\u5219\u5148\u6267\u884c\uff1a`yum install -y wget`,\u518d\u6267\u884c\u4e0b\u8f7d\u547d\u4ee4)\nwget https:\/\/github.com\/medcl\/elasticsearch-analysis-ik\/releases\/download\/v7.8.0\/elasticsearch-analysis-ik-7.8.0.zip\n# \u53ef\u9009\u9879\uff1awget\u4e0b\u8f7d\u8fc7\u6162\u53ef\u5148\u7528\u6d4f\u89c8\u5668\u5c06\u6587\u4ef6\u4e0b\u8f7d\u5230\u672c\u5730\u518d\u4e0a\u4f20\u5230Linux\uff08\u5982\u679c\u63d0\u793a\u6ca1\u6709rz\u547d\u4ee4\u5219\u5148\u6267\u884c\uff1a`yum install -y lrzsz`,\u518d\u6267\u884c\u4e0a\u4f20\u547d\u4ee4\uff0c\u9009\u62e9elasticsearch-analysis-ik-7.8.0.zip\u6587\u4ef6\uff09\nrz\n# \u89e3\u538b(\u5982\u679c\u63d0\u793a\u6ca1\u6709unzip\u547d\u4ee4\u5219\u5148\u6267\u884c\uff1a`yum install -y unzip`\uff0c\u518d\u6267\u884c\u4e0b\u8f7d\u547d\u4ee4)\nunzip elasticsearch-analysis-ik-7.8.0.zip -d elasticsearch-analysis-ik\n```\n- dockerFile\n``` shell\nFROM elasticsearch:7.8.0\nADD elasticsearch-analysis-ik \/usr\/share\/elasticsearch\/plugins\/elasticsearch-analysis-ik\n```\n- \u5bb9\u5668\u955c\u50cf\u6784\u5efa\n```shell\ndocker build -f DockerFile -t elasticsearch-ik:7.8.0 .\n```\n- \u5bb9\u5668\u8fd0\u884c\n``` \ndocker run -d -p 9200:9200 -p 9300:9300 -e \"discovery.type=single-node\" --name es_ik elasticsearch-ik:7.8.0\n```\n- \u4fee\u6539\u5bb9\u5668\u914d\u7f6e\u4fe1\u606f\n```\n# \u8fdb\u5165\u5bb9\u5668\ndocker exec -it es \/bin\/bash\n# \u4fee\u6539elasticSearch\u914d\u7f6e\u4fe1\u606f\ncd config\nvi elasticsearch.yml\n# \u52a0\u5165\u8de8\u57df\u914d\u7f6e\nhttp.cors.enabled: true\nhttp.cors.allow-origin: \"*\"\n```\n- \u91cd\u542f\u5bb9\u5668\n``` shell\ndocker restart es_ik \n```\n### kibana\u53ef\u89c6\u5316\u6784\u5efa\n- \u542f\u52a8\u5bb9\u5668\n```\ndocker run -d -p 5601:5601 --name kibana --link elasticsearch:elasticsearch docker.io\/kibana:7.8.0\n```\n- \u4fee\u6539kibana\u914d\u7f6e\u4fe1\u606f\n``` shell\n# \u67e5\u770belasticSearch\u5bb9\u5668\u5b9e\u4f8b\u5185\u90e8ip:\ndocker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id\n# \u8fdb\u5165\u5bb9\u5668\ndocker exec -it (Kibana\u5bb9\u5668ID) \/bin\/bash\n# \u4fee\u6539\u914d\u7f6e\u9879\ncd config\nvi kibana.yml\n#\u66ff\u6362\"http:\/\/elasticsearch:9200\" \u4e2d\u7684 elasticsearch \u66ff\u6362\u6210\u4e0a\u4e00\u6b65\u7684es\u5bb9\u5668\u5185\u90e8ip\u5c31\u53ef\u4ee5\n#\u5982\u679c\u9700\u8981\u8bbe\u7f6e\u4e3a\u4e2d\u6587 \u5219\u5728kibana.yml\u4e2d\u6dfb\u52a0\u6dfb\u52a0 i18n.locale: \"zh-CN\"\n```\n- \u91cd\u542f\u5bb9\u5668\n```  \ndocker restart kibana_\u5bb9\u5668\n```\n\n\u53c2\u8003\u9605\u8bfb\n[ik\u5206\u8bcd\u4f7f\u7528](https:\/\/blog.csdn.net\/xsdxs\/article\/details\/72853288)\n[docker ElasticSearch\u6784\u5efa](https:\/\/www.cnblogs.com\/new-life\/p\/13397982.html)\n[docker elasticSearch\u90e8\u7f72](https:\/\/www.cnblogs.com\/jianxuanbing\/p\/9410800.html)","htmlContent":"<h3 class=\"my-blog-head\" id=\"my-blog-head0\">Es+Ik\u5206\u8bcd\u90e8\u7f72<\/h3><ul>\n<li>\u73af\u5883\u6784\u5efa<pre><code class=\"language-shell\"># \u62c9\u53d6\u6307\u5b9a\u7248\u672c elasticSearch\u955c\u50cf\ndocker pull elasticsearch:7.8.0\n# \u5728Linux\u6839\u76ee\u5f55\u521b\u5efadocker\u6587\u4ef6\u5939\u5e76\u8fdb\u5165\u6587\u4ef6\u5939\nmkdir \/docker\ncd \/docker\n# \u4e0b\u8f7dIK\u63d2\u4ef6\u6587\u4ef6(\u5982\u679c\u63d0\u793a\u6ca1\u6709wget\u547d\u4ee4\u5219\u5148\u6267\u884c\uff1a`yum install -y wget`,\u518d\u6267\u884c\u4e0b\u8f7d\u547d\u4ee4)\nwget https:\/\/github.com\/medcl\/elasticsearch-analysis-ik\/releases\/download\/v7.8.0\/elasticsearch-analysis-ik-7.8.0.zip\n# \u53ef\u9009\u9879\uff1awget\u4e0b\u8f7d\u8fc7\u6162\u53ef\u5148\u7528\u6d4f\u89c8\u5668\u5c06\u6587\u4ef6\u4e0b\u8f7d\u5230\u672c\u5730\u518d\u4e0a\u4f20\u5230Linux\uff08\u5982\u679c\u63d0\u793a\u6ca1\u6709rz\u547d\u4ee4\u5219\u5148\u6267\u884c\uff1a`yum install -y lrzsz`,\u518d\u6267\u884c\u4e0a\u4f20\u547d\u4ee4\uff0c\u9009\u62e9elasticsearch-analysis-ik-7.8.0.zip\u6587\u4ef6\uff09\nrz\n# \u89e3\u538b(\u5982\u679c\u63d0\u793a\u6ca1\u6709unzip\u547d\u4ee4\u5219\u5148\u6267\u884c\uff1a`yum install -y unzip`\uff0c\u518d\u6267\u884c\u4e0b\u8f7d\u547d\u4ee4)\nunzip elasticsearch-analysis-ik-7.8.0.zip -d elasticsearch-analysis-ik<\/code><\/pre>\n<\/li>\n<li>dockerFile<pre><code class=\"language-shell\">FROM elasticsearch:7.8.0\nADD elasticsearch-analysis-ik \/usr\/share\/elasticsearch\/plugins\/elasticsearch-analysis-ik<\/code><\/pre>\n<\/li>\n<li>\u5bb9\u5668\u955c\u50cf\u6784\u5efa<pre><code class=\"language-shell\">docker build -f DockerFile -t elasticsearch-ik:7.8.0 .<\/code><\/pre>\n<\/li>\n<li>\u5bb9\u5668\u8fd0\u884c<pre><code>docker run -d -p 9200:9200 -p 9300:9300 -e &quot;discovery.type=single-node&quot; --name es_ik elasticsearch-ik:7.8.0<\/code><\/pre>\n<\/li>\n<li>\u4fee\u6539\u5bb9\u5668\u914d\u7f6e\u4fe1\u606f<pre><code># \u8fdb\u5165\u5bb9\u5668\ndocker exec -it es \/bin\/bash\n# \u4fee\u6539elasticSearch\u914d\u7f6e\u4fe1\u606f\ncd config\nvi elasticsearch.yml\n# \u52a0\u5165\u8de8\u57df\u914d\u7f6e\nhttp.cors.enabled: true\nhttp.cors.allow-origin: &quot;*&quot;<\/code><\/pre>\n<\/li>\n<li>\u91cd\u542f\u5bb9\u5668<pre><code class=\"language-shell\">docker restart es_ik <\/code><\/pre>\n<h3 class=\"my-blog-head\" id=\"my-blog-head1\">kibana\u53ef\u89c6\u5316\u6784\u5efa<\/h3><\/li>\n<li>\u542f\u52a8\u5bb9\u5668<pre><code>docker run -d -p 5601:5601 --name kibana --link elasticsearch:elasticsearch docker.io\/kibana:7.8.0<\/code><\/pre>\n<\/li>\n<li>\u4fee\u6539kibana\u914d\u7f6e\u4fe1\u606f<pre><code class=\"language-shell\"># \u67e5\u770belasticSearch\u5bb9\u5668\u5b9e\u4f8b\u5185\u90e8ip:\ndocker inspect -f &#39;{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}&#39; container_name_or_id\n# \u8fdb\u5165\u5bb9\u5668\ndocker exec -it (Kibana\u5bb9\u5668ID) \/bin\/bash\n# \u4fee\u6539\u914d\u7f6e\u9879\ncd config\nvi kibana.yml\n#\u66ff\u6362&quot;http:\/\/elasticsearch:9200&quot; \u4e2d\u7684 elasticsearch \u66ff\u6362\u6210\u4e0a\u4e00\u6b65\u7684es\u5bb9\u5668\u5185\u90e8ip\u5c31\u53ef\u4ee5\n#\u5982\u679c\u9700\u8981\u8bbe\u7f6e\u4e3a\u4e2d\u6587 \u5219\u5728kibana.yml\u4e2d\u6dfb\u52a0\u6dfb\u52a0 i18n.locale: &quot;zh-CN&quot;<\/code><\/pre>\n<\/li>\n<li>\u91cd\u542f\u5bb9\u5668<pre><code>docker restart kibana_\u5bb9\u5668<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>\u53c2\u8003\u9605\u8bfb<br><a href=\"https:\/\/blog.csdn.net\/xsdxs\/article\/details\/72853288\">ik\u5206\u8bcd\u4f7f\u7528<\/a><br><a href=\"https:\/\/www.cnblogs.com\/new-life\/p\/13397982.html\">docker ElasticSearch\u6784\u5efa<\/a><br><a href=\"https:\/\/www.cnblogs.com\/jianxuanbing\/p\/9410800.html\">docker elasticSearch\u90e8\u7f72<\/a><\/p>\n","cover":"http:\/\/swooleapi.lubiao9.cn\/upload\/images\/2025-04-07\/d8iuXokb753Xo67x9tt1M.png","subMessage":"elasticSearch\u4e2d\u6587\u641c\u7d22\u642d\u5efa","pageview":37,"isEncrypt":0,"tags":[{"aid":24,"id":"7yrsPelaVzabhTJo4CeGee","name":"elasticSearch","createTime":"1744015007","updateTime":"1744015007","status":0,"articleCount":0,"pivot":{"articleId":"53VT3qwhZ6NJEHH24iM6Mk","tagId":"7yrsPelaVzabhTJo4CeGee"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}},{"aid":40,"id":"63Wu7Jlilt90XlFdN4Bb08","title":"\u7f51\u7edc\u534f\u8bae\u57fa\u7840","categoryId":"3Em8OyMhNMfXWQgY6R2FAo","createTime":"1616558165","deleteTime":null,"updateTime":"1744014418","publishTime":1616575171,"deleteAt":null,"status":0,"content":"##### TCP\u8fde\u63a5 \u4e09\u6b21\u63e1\u624b\u4e0e\u56db\u6b21\u6325\u624b\n![\u8111\u56fe.png](http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-03-24\/4XZyafRKdkFkPg5FOrujTa.png)\n- \u4e09\u6b21\u63e1\u624b\n> \u7b2c\u4e00\u6b21\u63e1\u624b\uff1aclient\u5411server\u53d1\u9001sny\u5305\uff0c\u8fde\u63a5\u8fdb\u5165SNY_SEND\u72b6\u6001\u3002\n\n|client|server|\n|-|-|\n|\u6b63\u5e38\u53d1\u9001\u6570\u636e|\u80fd\u63a5\u53d7\u6570\u636e|\n\n> \u7b2c\u4e8c\u6b21\u63e1\u624b\uff1aserver\u5411client\u53d1\u9001ack+sny\u5305\uff0c\u670d\u52a1\u5668\u8fdb\u5165SYN_RECV\u72b6\u6001\u3002\n\n|client|server|\n|-|-|\n|\u786e\u5b9a\u80fd\u6b63\u5e38\u53d1\u9001\u4e0e\u6b63\u5e38\u63a5\u53d7|\u80fd\u63a5\u53d7\u6570\u636e|\n\n> \u7b2c\u4e09\u6b21\u63e1\u624b\uff1aclient\u5411server\u53d1\u9001ack\u5305\uff0c\u6b64\u65f6\u53cc\u65b9\u5efa\u7acb\u8fde\u63a5\u8fdb\u5165ESTABLISHED\u72b6\u6001\u3002\n\n|client|server|\n|-|-|\n|\u786e\u5b9a\u80fd\u6b63\u5e38\u53d1\u9001\uff0c\u6b63\u5e38\u63a5\u53d7|\u80fd\u6b63\u5e38\u63a5\u53d7\uff0c\u6b63\u5e38\u53d1\u9001|\n\n> ==\u4e3a\u4ec0\u4e48\u4e3a\u4e09\u6b21\u63e1\u624b==\n\u63e1\u624b\u6d41\u7a0b\uff0c\u65e0\u975e\u5c31\u662fclient\u4e0eserver\u76f8\u4e92\u786e\u5b9a\u4fdd\u8bc1\u901a\u4fe1\u80fd\u591f\u6b63\u5e38\u7684\u4e00\u4e2a\u8fc7\u7a0b\u3002\n\u7b2c\u4e00\u6b21\u63e1\u624b\uff0cclient\u5411server\u53d1\u9001sny\u5305\uff0c\u5373\u7406\u89e3\u4e3a\u6211\u544a\u8bc9\u4f60\u6211\u8981\u4e0e\u4f60\u8fdb\u884c\u901a\u8baf\n\u7b2c\u4e8c\u6b21\u63e1\u624b\uff0cserver\u4e3a\u4e86\u8868\u660e\u81ea\u5df1\u6536\u5230\u4fe1\u606f\uff0c\u53d1\u9001\u4e86\u4e00\u4e2aack\u8fdb\u884c\u53cd\u9988\uff0c\u540c\u65f6\u53d1\u9001sny\u5305\u201c\u8be2\u95ee\u201dclient\u662f\u5426\u4e5f\u80fd\u6536\u5230\u4fe1\u606f\n\u7b2c\u4e09\u6b21\u63e1\u624b\uff0cclient\u6536\u5230server\u7684ack+sny\u5305\u4e4b\u540e\uff0c\u4f1a\u53d1\u9001ack\u5305\u7ed9server\uff0c\u76ee\u7684\u4e3a\u4e86\u544a\u77e5server\u201c\u6211\uff08client\uff09\u201d\u6536\u5230\u4f60\u7684\u4fe1\u606f\n\n\u5982\u679c\u63e1\u624b\u8fc7\u7a0b\u53ea\u6709\u4e24\u6b21\uff0c\u5f53\u670d\u52a1\u5668\u5411\u8ba1\u7b97\u673a\u53d1\u51fasny+ack\u5305\u540e\u7acb\u5373\u8fdb\u5165\u8fde\u63a5\u72b6\u6001\uff0c\u6b64\u65f6\u8ba1\u7b97\u673a\u82e5\u6ca1\u6709\u6536\u5230\u670d\u52a1\u5668\u53d1\u9001\u7684\u5305\uff0c\u5c31\u4e0d\u77e5\u9053\u8be5\u8fde\u63a5\u5df2\u7ecf\u6210\u529f\u5efa\u7acb\u4e5f\u4e0d\u77e5\u9053\u4f55\u65f6\u5173\u95ed\u8be5\u8fde\u63a5\uff0c\u4f1a\u5bfc\u81f4\u5360\u7528\u670d\u52a1\u5668\u8d44\u6e90\u3002\n\n- \u56db\u6b21\u6325\u624b\n> \u7b2c\u4e00\u6b21\u6325\u624b client\u53d1\u9001fin\u5305\u5230server\u3002\n> \u7b2c\u4e8c\u6b21\u6325\u624b server\u6536\u5230fin\u5e76\u5411client\u53d1\u9001ack\u786e\u8ba4\u5305\u3002\n> \u7b2c\u4e09\u6b21\u6325\u624b server\u5411client\u53d1\u9001fin\u5305\u3002\n> \u7b2c\u56db\u6b21\u6325\u624b client\u6536\u5230fin\u5305\uff0c\u5e76\u5411server\u53d1\u9001ack\u5305\uff0c\u5173\u95ed\u8fde\u63a5\u3002\n\n\n\n\n","htmlContent":"<h5 class=\"my-blog-head\" id=\"my-blog-head0\">TCP\u8fde\u63a5 \u4e09\u6b21\u63e1\u624b\u4e0e\u56db\u6b21\u6325\u624b<\/h5><p><img src=\"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-03-24\/4XZyafRKdkFkPg5FOrujTa.png\" 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1cd\u5199\u7684\u6d41\u7a0b\u3002<br>4\u3001\u4e00\u4e9b\u73b0\u5b9e\u7684\u95ee\u9898\uff1a\u5305\u62ec\u5982\u4f55\u9009\u62e9\u6301\u4e45\u5316\u7b56\u7565\uff0c\u4ee5\u53ca\u9700\u8981\u6ce8\u610f\u7684fork\u963b\u585e\u3001AOF\u8ffd\u52a0\u963b\u585e\u7b49\u3002<\/p>\n<p><a href=\"https:\/\/blog.csdn.net\/qq_35433716\/article\/details\/82195106\">aof\u6301\u4e45\u5316\u65b9\u6848<\/a><br><a href=\"https:\/\/www.cnblogs.com\/ysocean\/p\/9114268.html\">rdb\u6301\u4e45\u5316\u65b9\u6848<\/a><br><a href=\"https:\/\/segmentfault.com\/a\/1190000009537768\">\u601d\u5426<\/a><\/p>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-03-03\/52fhmj5aCNOHVwaGDhPJ4k.jpg","subMessage":"Redis\u6301\u4e45\u5316\u6d45\u8c08","pageview":3,"isEncrypt":0,"tags":[],"category":null},{"aid":38,"id":"4vuwRN7zJNKcj8JvhMd0tm","title":"redis zset\u6839\u636e\u591a\u4e2a\u5217\u6392\u5e8f","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1613898704","deleteTime":null,"updateTime":"1678243522","publishTime":1613898704,"deleteAt":null,"status":0,"content":"|id|score|sort|create_time|\n|-|-|-|-|\n|1|80|1|2020-01-01 15:00:00|\n|2|50|2|2020-01-01 15:30:00|\n|3|80|3|2020-01-01 15:30:00|\n\n> \u4f7f\u7528redis zset\u505a\u6392\u5e8f\u65f6\uff0c\u53ea\u80fd\u6307\u5b9a\u4e00\u4e2a\u6743\u91cd\u503c\u505a\u6392\u5e8f\uff0c\u65e0\u6cd5\u505a\u5230\u7c7b\u4f3cmysql\u7c7b\u4f3c order by score,create_time desc \u8fd9\u79cd\u6839\u636e\u4e24\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\u7684\u6548\u679c\u3002\n\n###### \u6392\u5e8f\u573a\u666f\n- 1.\u6839\u636e\u591a\u4e2a\u5217\u8fdb\u884c\u6743\u91cd\u6392\u5e8f\n- 2.\u6839\u636e\u591a\u4e2a\u5217\u8fdb\u884c\u5b57\u6bb5\u4f18\u5148\u7ea7\u6392\u5e8f\n\n###### \u89e3\u51b3\u601d\u8def\n\u5982\u679c\u6392\u5e8f\u5b57\u6bb5\u5747\u4e3a\u6d6e\u70b9\u578b\u6216\u6574\u578b\uff0c\u5834\u666f1\u5927\u6982\u53ef\u4ee5\u7528\u7c7b\u4f3c score*0.2+sort*0.8 \u8fd9\u79cd\u751f\u4ea7\u65b0\u7684\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u4f46\u6392\u5e8f\u5217\u4e3a\u5b57\u7b26\u4e32\u65f6\uff0c\u7c7b\u4f3c\u4e3acreate_time\u8fd9\u7c7b\u578b\u7684\u65f6\u95f4\u5217\u65f6\uff0c\u5219\u53ef\u4ee5\u8003\u8651\u5c06\u65f6\u95f4\u5217\u8f6c\u4e3a\u65f6\u95f4\u6233\u8fdb\u884c\u5904\u7406\u3002\u573a\u666f2\u4e5f\u662f\u540c\u7406\uff0c\u8b6c\u5982\u6839\u636escore\u6392\u5e8f\u4e4b\u540e\uff0c\u5728\u6839\u636ecreate_time\u6392\u5e8f\uff0c\u5219\u53ef\u4ee5\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5217\uff0c\u4f8b\u5982 create_time+score (20200101150000*1000+100),\u5176\u4e2dcreate_time\u6240\u4e58\u500d\u6570\u4e3ascore\u7684max~min\u533a\u95f4\u3002\u5ef6\u4f38\u601d\u8003\u5982\u679c\u6709\u7c7b\u578b\u5176\u4ed6\u5b57\u7b26\uff0c\u4e5f\u53ef\u4ee5\u5148\u505a  \u5b57\u7b26=>\u6570\u5b57 \u7684\u6620\u5c04\uff0c\u518d\u8fdb\u884c\u5bf9\u5e94\u7ec4\u88c5\u3002\uff08\u8003\u8651\u7528ASCII\u503c\u4e5f\u884c\uff09\n","htmlContent":"<table>\n<thead>\n<tr>\n<th>id<\/th>\n<th>score<\/th>\n<th>sort<\/th>\n<th>create_time<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>1<\/td>\n<td>80<\/td>\n<td>1<\/td>\n<td>2020-01-01 15:00:00<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>50<\/td>\n<td>2<\/td>\n<td>2020-01-01 15:30:00<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>80<\/td>\n<td>3<\/td>\n<td>2020-01-01 15:30:00<\/td>\n<\/tr>\n<\/tbody><\/table>\n<blockquote>\n<p>\u4f7f\u7528redis zset\u505a\u6392\u5e8f\u65f6\uff0c\u53ea\u80fd\u6307\u5b9a\u4e00\u4e2a\u6743\u91cd\u503c\u505a\u6392\u5e8f\uff0c\u65e0\u6cd5\u505a\u5230\u7c7b\u4f3cmysql\u7c7b\u4f3c order by score,create_time desc \u8fd9\u79cd\u6839\u636e\u4e24\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\u7684\u6548\u679c\u3002<\/p>\n<\/blockquote>\n<h6 class=\"my-blog-head\" id=\"my-blog-head0\">\u6392\u5e8f\u573a\u666f<\/h6><ul>\n<li>1.\u6839\u636e\u591a\u4e2a\u5217\u8fdb\u884c\u6743\u91cd\u6392\u5e8f<\/li>\n<li>2.\u6839\u636e\u591a\u4e2a\u5217\u8fdb\u884c\u5b57\u6bb5\u4f18\u5148\u7ea7\u6392\u5e8f<\/li>\n<\/ul>\n<h6 class=\"my-blog-head\" id=\"my-blog-head1\">\u89e3\u51b3\u601d\u8def<\/h6><p>\u5982\u679c\u6392\u5e8f\u5b57\u6bb5\u5747\u4e3a\u6d6e\u70b9\u578b\u6216\u6574\u578b\uff0c\u5834\u666f1\u5927\u6982\u53ef\u4ee5\u7528\u7c7b\u4f3c score<em>0.2+sort<\/em>0.8 \u8fd9\u79cd\u751f\u4ea7\u65b0\u7684\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u4f46\u6392\u5e8f\u5217\u4e3a\u5b57\u7b26\u4e32\u65f6\uff0c\u7c7b\u4f3c\u4e3acreate_time\u8fd9\u7c7b\u578b\u7684\u65f6\u95f4\u5217\u65f6\uff0c\u5219\u53ef\u4ee5\u8003\u8651\u5c06\u65f6\u95f4\u5217\u8f6c\u4e3a\u65f6\u95f4\u6233\u8fdb\u884c\u5904\u7406\u3002\u573a\u666f2\u4e5f\u662f\u540c\u7406\uff0c\u8b6c\u5982\u6839\u636escore\u6392\u5e8f\u4e4b\u540e\uff0c\u5728\u6839\u636ecreate_time\u6392\u5e8f\uff0c\u5219\u53ef\u4ee5\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5217\uff0c\u4f8b\u5982 create_time+score (20200101150000*1000+100),\u5176\u4e2dcreate_time\u6240\u4e58\u500d\u6570\u4e3ascore\u7684max~min\u533a\u95f4\u3002\u5ef6\u4f38\u601d\u8003\u5982\u679c\u6709\u7c7b\u578b\u5176\u4ed6\u5b57\u7b26\uff0c\u4e5f\u53ef\u4ee5\u5148\u505a  \u5b57\u7b26=&gt;\u6570\u5b57 \u7684\u6620\u5c04\uff0c\u518d\u8fdb\u884c\u5bf9\u5e94\u7ec4\u88c5\u3002\uff08\u8003\u8651\u7528ASCII\u503c\u4e5f\u884c\uff09<\/p>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-02-21\/3Mwyav1BpJn2XSnjAZiRbs.png","subMessage":"\u4f7f\u7528redis zest\u505a\u6392\u5e8f\u601d\u8003","pageview":24,"isEncrypt":0,"tags":[{"aid":4,"id":"5xIT5qSRXkXgIRBqJSjmTM","name":"\u57fa\u7840\u5b66\u4e60","createTime":"1585730754","updateTime":null,"status":0,"articleCount":0,"pivot":{"articleId":"4vuwRN7zJNKcj8JvhMd0tm","tagId":"5xIT5qSRXkXgIRBqJSjmTM"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}},{"aid":37,"id":"6WGAZEpuk5bH9x7ogXZTZW","title":"\u5b9a\u65f6\u6e05\u9664\u65e5\u5fd7\u6587\u4ef6","categoryId":"6cf2chZWbRqjksmDTI8adG","createTime":"1613794267","deleteTime":null,"updateTime":"1757054304","publishTime":1613794358,"deleteAt":null,"status":0,"content":"```shell\n#!\/bin\/bash\n#----------------\u4f7f\u7528\u89c4\u8303----------------\n#1\u3001\u8be5\u6587\u4ef6\u56fa\u5b9a\u5b58\u653e\u5728linux\u7684 \/usr\/local\/crontab\/delFiles \u76ee\u5f55\u4e0b\n#2\u3001\u5404\u8d23\u4efb\u4eba\u7ef4\u62a4\u597d\u8981\u6e05\u7406\u65e5\u5fd7\u6587\u4ef6\u7684\u76ee\u5f55\uff0c\u5e76\u4ee5\u6ce8\u91ca\u65b9\u5f0f\u5907\u6ce8\u5199\u660e\u8c01\u7ef4\u62a4\n\n#find\uff1alinux\u7684\u67e5\u627e\u547d\u4ee4\uff0c\u7528\u6237\u67e5\u627e\u6307\u5b9a\u6761\u4ef6\u7684\u6587\u4ef6\uff1b\n#\/opt\/soft\/log\/\uff1a\u60f3\u8981\u8fdb\u884c\u6e05\u7406\u7684\u4efb\u610f\u76ee\u5f55\uff1b\n#-mtime\uff1a\u6807\u51c6\u8bed\u53e5\u5199\u6cd5\uff1b\n#+3\uff1a\u67e5\u627e3\u5929\u524d\u7684\u6587\u4ef6\uff0c\u8fd9\u91cc\u7528\u6570\u5b57\u4ee3\u8868\u5929\u6570\uff1b\n#\"*.log\"\uff1a\u5e0c\u671b\u67e5\u627e\u7684\u6570\u636e\u7c7b\u578b\uff0c\"*.jpg\"\u8868\u793a\u67e5\u627e\u6269\u5c55\u540d\u4e3ajpg\u7684\u6240\u6709\u6587\u4ef6\uff0c\"*\"\u8868\u793a\u67e5\u627e\u6240\u6709\u6587\u4ef6\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u7075\u6d3b\u8fd0\u7528\uff0c\u4e3e\u4e00\u53cd\u4e09\uff1b\n#-exec\uff1a\u56fa\u5b9a\u5199\u6cd5\uff1b\n#rm -rf\uff1a\u5f3a\u5236\u5220\u9664\u6587\u4ef6\uff0c\u5305\u62ec\u76ee\u5f55\uff1b\n# {} \\; \uff1a\u56fa\u5b9a\u5199\u6cd5\uff0c\u4e00\u5bf9\u5927\u62ec\u53f7+\u7a7a\u683c+\\+; \n\necho \"del file start.....\"\n#find \/home\/logs\/ -mtime +3 -name \"*.log\"  -exec rm -rf {} \\;\nfind \/usr\/local\/tomcat\/tomcat7-8034-TaskOutside\/logs -mtime +0 -name \"*.log.*\"  -exec rm -rf {} \\;\nfind \/usr\/local\/tomcat\/tomcat7-8034-TaskOutside\/logs -mtime +0 -name \"*.out.*\"  -exec rm -rf {} \\;\nfind \/usr\/local\/tomcat\/springboot-MIA-exchange\/logs\/islife -mtime +1 -name \"*.log\"  -exec rm -rf {} \\;\nfind \/root\/logs\/islife -mtime +0 -name \"*.log\"  -exec rm -rf {} \\;\nfind \/home\/yw\/logs  -mtime +1 -name \"*.log*\"  -exec rm -rf {} \\;\n> \/usr\/local\/tomcat7\/logs\/catalina.out;\necho \"del file end\"\n```\n\n\ncrontab\u6267\u884c\u4efb\u52a1\n```\n# For details see man 4 crontabs\n# Example of job definition:\n# .---------------- minute (0 - 59)\n# |  .------------- hour (0 - 23)\n# |  |  .---------- day of month (1 - 31)\n# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...\n# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat\n# |  |  |  |  |\n# *  *  *  *  * user-name command to be executed\n59 15 * * * \u6587\u4ef6\u8def\u5f84\/shell\u6587\u4ef6\u540d.sh >dev\/null 2>&1\n\n```\n","htmlContent":"<pre><code class=\"language-shell\">#!\/bin\/bash\n#----------------\u4f7f\u7528\u89c4\u8303----------------\n#1\u3001\u8be5\u6587\u4ef6\u56fa\u5b9a\u5b58\u653e\u5728linux\u7684 \/usr\/local\/crontab\/delFiles \u76ee\u5f55\u4e0b\n#2\u3001\u5404\u8d23\u4efb\u4eba\u7ef4\u62a4\u597d\u8981\u6e05\u7406\u65e5\u5fd7\u6587\u4ef6\u7684\u76ee\u5f55\uff0c\u5e76\u4ee5\u6ce8\u91ca\u65b9\u5f0f\u5907\u6ce8\u5199\u660e\u8c01\u7ef4\u62a4\n\n#find\uff1alinux\u7684\u67e5\u627e\u547d\u4ee4\uff0c\u7528\u6237\u67e5\u627e\u6307\u5b9a\u6761\u4ef6\u7684\u6587\u4ef6\uff1b\n#\/opt\/soft\/log\/\uff1a\u60f3\u8981\u8fdb\u884c\u6e05\u7406\u7684\u4efb\u610f\u76ee\u5f55\uff1b\n#-mtime\uff1a\u6807\u51c6\u8bed\u53e5\u5199\u6cd5\uff1b\n#+3\uff1a\u67e5\u627e3\u5929\u524d\u7684\u6587\u4ef6\uff0c\u8fd9\u91cc\u7528\u6570\u5b57\u4ee3\u8868\u5929\u6570\uff1b\n#&quot;*.log&quot;\uff1a\u5e0c\u671b\u67e5\u627e\u7684\u6570\u636e\u7c7b\u578b\uff0c&quot;*.jpg&quot;\u8868\u793a\u67e5\u627e\u6269\u5c55\u540d\u4e3ajpg\u7684\u6240\u6709\u6587\u4ef6\uff0c&quot;*&quot;\u8868\u793a\u67e5\u627e\u6240\u6709\u6587\u4ef6\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u7075\u6d3b\u8fd0\u7528\uff0c\u4e3e\u4e00\u53cd\u4e09\uff1b\n#-exec\uff1a\u56fa\u5b9a\u5199\u6cd5\uff1b\n#rm -rf\uff1a\u5f3a\u5236\u5220\u9664\u6587\u4ef6\uff0c\u5305\u62ec\u76ee\u5f55\uff1b\n# {} \\; \uff1a\u56fa\u5b9a\u5199\u6cd5\uff0c\u4e00\u5bf9\u5927\u62ec\u53f7+\u7a7a\u683c+\\+; \n\necho &quot;del file start.....&quot;\n#find \/home\/logs\/ -mtime +3 -name &quot;*.log&quot;  -exec rm -rf {} \\;\nfind \/usr\/local\/tomcat\/tomcat7-8034-TaskOutside\/logs -mtime +0 -name &quot;*.log.*&quot;  -exec rm -rf {} \\;\nfind \/usr\/local\/tomcat\/tomcat7-8034-TaskOutside\/logs -mtime +0 -name &quot;*.out.*&quot;  -exec rm -rf {} \\;\nfind \/usr\/local\/tomcat\/springboot-MIA-exchange\/logs\/islife -mtime +1 -name &quot;*.log&quot;  -exec rm -rf {} \\;\nfind \/root\/logs\/islife -mtime +0 -name &quot;*.log&quot;  -exec rm -rf {} \\;\nfind \/home\/yw\/logs  -mtime +1 -name &quot;*.log*&quot;  -exec rm -rf {} \\;\n&gt; \/usr\/local\/tomcat7\/logs\/catalina.out;\necho &quot;del file end&quot;<\/code><\/pre>\n<p>crontab\u6267\u884c\u4efb\u52a1<\/p>\n<pre><code># For details see man 4 crontabs\n# Example of job definition:\n# .---------------- minute (0 - 59)\n# |  .------------- hour (0 - 23)\n# |  |  .---------- day of month (1 - 31)\n# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...\n# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat\n# |  |  |  |  |\n# *  *  *  *  * user-name command to be executed\n59 15 * * * \u6587\u4ef6\u8def\u5f84\/shell\u6587\u4ef6\u540d.sh &gt;dev\/null 2&gt;&amp;1\n<\/code><\/pre>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-02-20\/7sjnjXqkANjdpVgjnuFwIg.jpg","subMessage":"crontab\u52a0shell\u811a\u672c\u5b9a\u65f6\u6e05\u9664\u65e5\u5fd7\u6587\u4ef6","pageview":22,"isEncrypt":0,"tags":[{"aid":13,"id":"4H72My7ykcAELCcxvdRNUo","name":"\u8fd0\u7ef4","createTime":"1613794109","updateTime":"1613794109","status":0,"articleCount":0,"pivot":{"articleId":"6WGAZEpuk5bH9x7ogXZTZW","tagId":"4H72My7ykcAELCcxvdRNUo"}}],"category":{"aid":5,"id":"6cf2chZWbRqjksmDTI8adG","name":"\u670d\u52a1\u5668","createTime":"1613794103","updateTime":"1613794103","status":0,"articleCount":0,"canDel":1}},{"aid":36,"id":"34FHlXU3MVxVzWXqbMLRro","title":"\u77e5\u8bc6\u5de9\u56fa  MySQL","categoryId":"2anf9m21xzVI03kFomz1ta","createTime":"1607414494","deleteTime":null,"updateTime":"1692324289","publishTime":1607497354,"deleteAt":null,"status":0,"content":"# \u5e38\u89c1\u9762\u8bd5\u9898\u76ee\u6c47\u603b\n#### \u6570\u636e\u5e93\u4e09\u8303\u5f0f\n```\n1NF:\u5b57\u6bb5\u4e0d\u53ef\u5206;\n\n2NF:\u6709\u4e3b\u952e\uff0c\u975e\u4e3b\u952e\u5b57\u6bb5\u4f9d\u8d56\u4e3b\u952e;\n\n3NF:\u975e\u4e3b\u952e\u5b57\u6bb5\u4e0d\u80fd\u76f8\u4e92\u4f9d\u8d56;\n\n\u89e3\u91ca:\n\n1NF:\u539f\u5b50\u6027 \u5b57\u6bb5\u4e0d\u53ef\u518d\u5206,\u5426\u5219\u5c31\u4e0d\u662f\u5173\u7cfb\u6570\u636e\u5e93;\n\n2NF:\u552f\u4e00\u6027 \u4e00\u4e2a\u8868\u53ea\u8bf4\u660e\u4e00\u4e2a\u4e8b\u7269;\n\n3NF:\u6bcf\u5217\u90fd\u4e0e\u4e3b\u952e\u6709\u76f4\u63a5\u5173\u7cfb\uff0c\u4e0d\u5b58\u5728\u4f20\u9012\u4f9d\u8d56;\n\n```\n\n#### \u5206\u522b\u8bf4\u4e00\u4e0b\u8303\u5f0f\u548c\u53cd\u8303\u5f0f\u7684\u4f18\u7f3a\u70b9\n```\n\u9075\u5faa\u8303\u5f0f\u8bbe\u8ba1\u53ef\u4ee5\u51cf\u5c11\u5b57\u6bb5\u5197\u4f59\uff0c\u800c\u5bf9\u4e8e\u5b9e\u9645\u5e94\u7528\u573a\u666f\u800c\u8a00\uff0c\u6211\u4eec\u5bf9\u4e8e\u6570\u636e\u5e93\u7684DML\uff08 select\\delete\\update\\insert\uff09\u7684\u9ad8\u9891\u64cd\u4f5c\u901a\u5e38\u96c6\u4e2d\u4e8e\u6570\u636e\u67e5\u8be2\uff0c\u6545\u9002\u5f53\u7684\u53cd\u8303\u5f0f\u8bbe\u8ba1\uff0c\u5197\u4f59\u4e00\u4e9b\u8868\u5b57\u6bb5\uff0c\u4ece\u800c\u53ef\u4ee5\u51cf\u5c11\u67e5\u8be2\u65f6\u7684\u7269\u7406\u6d88\u8017\u3002\n```\n[\u53c2\u770b\u67e5\u9605](https:\/\/www.cnblogs.com\/xiaozengzeng\/p\/10720226.html)\n\n#### Mysql \u6570\u636e\u5e93\u7d22\u5f15\u3002B+ \u6811\u548c B \u6811\u7684\u533a\u522b\n[\u53c2\u770b\u67e5\u9605](https:\/\/www.cnblogs.com\/xueqiuqiu\/articles\/8779029.html)\n\n#### \u4e3a\u4ec0\u4e48 B+ \u6811\u6bd4 B \u6811\u66f4\u9002\u5408\u5e94\u7528\u4e8e\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u9664\u4e86\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u8fd8\u6709\u4ec0\u4e48\u5730\u65b9\u7528\u5230\u4e86\uff08\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7d22\u5f15\uff09\n[\u53c2\u8003\u67e5\u9605]\uff08https:\/\/blog.csdn.net\/ldw662523\/article\/details\/79586073\uff09\n\n#### \u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15\uff0c\u524d\u7f00\u7d22\u5f15\u548c\u8986\u76d6\u7d22\u5f15\n|id|a|b|c|\n|-|-|-|-|\n|1|1|1|1|\n|2|2|2|1|\n|3|3|3|1|\n|4|4|4|1|\nMySQL\u6570\u636e\u8868\uff0c\u805a\u7c07\u7d22\u5f15\u4e00\u822c\u4ee5\u4e3b\u952e\u4f5c\u4e3a\u5efa\u7acb\u4e00\u9897B+\u6811(\u82e5\u65e0\u58f0\u660e\u4e3b\u952e\uff0c\u5219\u4f1a\u81ea\u52a8\u751f\u6210\u9690\u6027\u7684row_id\uff09\u3002\u805a\u7c07\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u8bb0\u5f55\u6240\u6709\u6240\u6709\u884c\u6570\u636e\uff0c\u800c\u975e\u805a\u7c07\u7d22\u5f15\u6811\u7684\u53f6\u5b50\u8282\u70b9\uff0c\u53ea\u8bb0\u5f55\u7684\u4e3b\u952e\u4e0e\u7d22\u5f15\u5b57\u6bb5\u3002\n\u6545\u5728\u6709\u8986\u76d6\u7d22\u5f15\u8fd9\u4e2a\u8bf4\u6cd5\uff0c\u5982\u679c\u67e5\u8be2\u65f6\u4f7f\u7528\u7684\u662f\u975e\u805a\u7c07\u7d22\u5f15\uff0c\u5982\u679c\u5efa\u7acb\u666e\u901aindex(a),\u67e5\u8be2\u7ed3\u679c\u5b57\u6bb5\u4e0d\u540c\u5219\u4f1a\u5f71\u54cd\u662f\u5426\u9700\u8981\u8d70\u56de\u8868\u67e5\u8be2\u64cd\u4f5c\u3002\u4f8b\u5982\n- select id,a,b from table where a = 1;  \/\/ \u9700\u8981\u56de\u8868\n- select id,a from table where a = 1;    \/\/ \u65e0\u9700\u56de\u8868\uff0c\u56e0\u4e3a\u975e\u805a\u7c07\u7d22\u5f15\u6811\u5df2\u5305\u542b\u4e86 id\u4e0ea\u4e24\u4e2a\u67e5\u8be2\u7ed3\u679c\u5b57\u6bb5\n[\u603b\u7ed3]\uff08http:\/\/hyperf.lubiao9.cn\/#\/article?id=3CLAmnSzOH9TBiM9trzxGs\uff09\n\n\u8bbe\u7f6e\u7d22\u5f15index(a,b)\n- \u524d\u7f00\u7d22\u5f15\n- \u8986\u76d6\u7d22\u5f15\n- select a,b from table where a = 1 and b = 2;\/\/ \u8986\u76d6\u7d22\u5f15\n- select a from table where a = 1;            \/\/  \u524d\u7f00\u7d22\u5f15\n- select b from table where b = 1;        \/\/ \u65e0\u6cd5\u547d\u4e2d\u7d22\u5f15\n#### \u4ecb\u7ecd\u4e00\u4e0b\u6570\u636e\u5e93\u7684\u4e8b\u52a1\n\u6570\u636e\u5e93\u4e2d\u7684\u4e8b\u52a1\u662f\u4f5c\u4e3a\u5355\u4e2a\u903b\u8f91\u5de5\u4f5c\u5355\u5143\u6267\u884c\u7684\u4e00\u7cfb\u5217\u64cd\u4f5c\u3002\uff08\u591a\u6761 SQL \u8bed\u53e5\uff0c\u8981\u4e48\u5168\u90e8\u6267\u884c\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u6267\u884c\u5931\u8d25\u3002\uff09\n\u6570\u636e\u5e93\u8981\u652f\u6301\u4e8b\u52a1\u64cd\u4f5c\u5fc5\u987b\u6ee1\u8db3\u56db\u4e2a\u7279\u6027\uff0c\u4e5f\u5c31\u662f\u5e38\u8bf4\u7684ACID\u3002\n\u539f\u5b50\u6027\uff0c\u9694\u79bb\u6027\uff0c\u4e00\u81f4\u6027\uff0c\u6301\u4e45\u6027\nA:\u539f\u5b50\u6027\uff08Atomicity\uff09\uff1a\u539f\u5b50\u6027\u662f\u6307\u4e8b\u52a1\u5305\u542b\u7684\u6240\u6709\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u5931\u8d25\uff0c\u5373\u5f20\u4e09\u7ed9\u674e\u56db\u8f6c\u8d26\uff0c\u8981\u4e48\u5f20\u4e09\u94b1\u51cf\u5c11\u674e\u56db\u94b1\u589e\u591a\uff0c\u8981\u4e48\u5f20\u4e09\u548c\u674e\u56db\u94b1\u90fd\u4e0d\u53d8\u3002\nC:\u4e00\u81f4\u6027\uff08Consistency\uff09\uff1a\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u4e4b\u524d\u548c\u6267\u884c\u4e4b\u540e\u90fd\u5fc5\u987b\u5904\u4e8e\u4e00\u81f4\u6027\u72b6\u6001\uff0c\u5373\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002\u5f20\u4e09\u548c\u674e\u56db\u5404\u6709\u4e00\u5343\u5757\uff0c\u5f20\u4e09\u7ed9\u674e\u56db\u8f6c100\uff0c\u5f20\u4e09\u7684\u94b1\u5c31\u8981\u53d8\u6210900\uff0c\u674e\u56db\u7684\u94b1\u8981\u53d8\u62101100\nI:\u9694\u79bb\u6027\uff08Isolation\uff09\uff1a\u591a\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u540c\u4e00\u4e2a\u64cd\u4f5c\u65f6\u4e0d\u80fd\u88ab\u5176\u4ed6\u4e8b\u52a1\u5e72\u6270\u3002\nD:\u6301\u4e45\u6027\uff08dependency\uff09\uff1a\u4e00\u4e2a\u4e8b\u52a1\u4e00\u65e6\u63d0\u4ea4\uff0c\u5b83\u5bf9\u6570\u636e\u5e93\u4e2d\u6570\u636e\u7684\u6539\u53d8\u5c31\u5e94\u8be5\u662f\u6c38\u4e45\u6027\u7684\n\n#### Mysql \u6709\u54ea\u4e9b\u9694\u79bb\u7ea7\u522b\nReadUnCommited\uff08\u8bfb\u672a\u63d0\u4ea4\uff09 \n\u80fd\u8bfb\u53d6\u5230\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u672a\u63d0\u4ea4\u7684\u6570\u636e\uff0c\u67e5\u8be2\u4e0d\u52a0\u9501\uff0c\u6545\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u662f\u6700\u5dee\u7684\uff0c\u4f1a\u51fa\u73b0\u5e7b\u8bfb\uff0c\u810f\u8bfb\u7b49\u60c5\u51b5\nReadCommited\uff08\u8bfb\u5df2\u63d0\u4ea4\uff09   \n\u80fd\u8bfb\u5230\u5df2\u7ecf\u63d0\u4ea4\u7684\u6570\u636e\u3002\u8fd9\u662f\u5404\u79cd\u7cfb\u7edf\u4e2d\u6700\u5e38\u7528\u7684\u4e00\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u4e5f\u662fSQL Server\u548cOracle\u7684\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\u3002\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\u80fd\u591f\u6709\u6548\u7684\u907f\u514d\u810f\u8bfb\uff0c\u4f46\u9664\u975e\u5728\u67e5\u8be2\u4e2d\u663e\u793a\u7684\u52a0\u9501\u3002\u201c\u8bfb\u63d0\u4ea4\u201d\u53ea\u80fd\u907f\u514d\u201c\u810f\u8bfb\u201d\uff0c\u5e76\u4e0d\u80fd\u907f\u514d\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u548c\u201c\u5e7b\u8bfb\u201d\u3002\nRepeatedRead\uff08\u53ef\u91cd\u590d\u8bfb\uff09 \n\u53ef\u91cd\u590d\u8bfb\uff0c\u5c31\u662f\u4e13\u95e8\u9488\u5bf9\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u8fd9\u79cd\u95ee\u9898\u800c\u5236\u5b9a\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u7684\u907f\u514d\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u3002\u5e76\u4e14\u5b83\u4e5f\u662fMySql\u7684\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\u3002\n\u5f53\u4e8b\u52a1\u542f\u52a8\u65f6\uff0c\u4e0d\u5141\u8bb8\u8fdb\u884c\u201c\u4fee\u6539\u64cd\u4f5c\uff08Update\uff09\u201d\uff0c\u5373\u5bf9\u8be5\u6570\u636e\u52a0\u9501\uff08\u884c\u9501\uff09\uff0c\u800c\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u6070\u6070\u662f\u56e0\u4e3a\u4e24\u6b21\u8bfb\u53d6\u4e4b\u95f4\u8fdb\u884c\u4e86\u6570\u636e\u7684\u4fee\u6539\uff0c\u56e0\u6b64\uff0c\u201c\u53ef\u91cd\u590d\u8bfb\u201d\u80fd\u591f\u6709\u6548\u7684\u907f\u514d\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\uff0c\u4f46\u5374\u907f\u514d\u4e0d\u4e86\u201c\u5e7b\u8bfb\u201d\uff0c\u56e0\u4e3a\u5e7b\u8bfb\u662f\u7531\u4e8e\u201c\u63d2\u5165\u6216\u8005\u5220\u9664\u64cd\u4f5c\uff08Insert or Delete\uff09\u201d\u800c\u4ea7\u751f\u7684\u3002\nSerializable\uff08\u7a9c\u884c\uff09\n\u6570\u636e\u5e93\u6700\u9ad8\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u8fd9\u79cd\u7ea7\u522b\u4e0b\uff0c\u4e8b\u52a1\u201c\u4e32\u884c\u5316\u987a\u5e8f\u6267\u884c\u201d\uff0c\u4e5f\u5c31\u662f\u4e00\u4e2a\u4e00\u4e2a\u6392\u961f\u6267\u884c\uff08\u76f8\u5f53\u4e8e\u52a0\u4e86\u8868\u9501\uff09\u3002\n\u8fd9\u79cd\u7ea7\u522b\u4e0b\uff0c\u201c\u810f\u8bfb\u201d\u3001\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u3001\u201c\u5e7b\u8bfb\u201d\u90fd\u4e0d\u4f1a\u51fa\u73b0\uff0c\u4f46\u662f\u6267\u884c\u6548\u7387\u975e\u5e38\u5dee\uff0c\u6027\u80fd\u5f00\u9500\u4e5f\u6700\u5927\uff0c\u6240\u4ee5\u57fa\u672c\u6ca1\u4eba\u4f1a\u7528\u3002\n\n#### Mysql \u4ec0\u4e48\u60c5\u51b5\u4f1a\u9020\u6210\u810f\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u3001\u5e7b\u8bfb\uff1f\u5982\u4f55\u89e3\u51b3\n> \u810f\u8bfb \u4e8b\u52a1A\u8bfb\u53d6\u5230\u4e8b\u52a1B\u56de\u6eda\u672a\u63d0\u4ea4\u7684\u810f\u6570\u636e\uff0c\u5bf9\u4e8eMySQL\u800c\u8a00\uff0c\u810f\u8bfb\u53ea\u4f1a\u5728RU\u7ea7\u522b\u7684\u4e8b\u52a1\u4e2d\u51fa\u73b0\u3002\n\n>\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\uff0c\u201c\u5e7b\u8bfb\u201d\u6307\u7684\u662f\u5728\u4e00\u4e2a\u4e8b\u52a1\u5355\u5143\u5185\uff0c\u4e8b\u52a1A\u9996\u6b21\u8bfb\u53d6\u5230\u7684\u6570\u636e\uff0c\u8ddf\u7b2c\u4e8c\u6b21\u8bfb\u53d6\u5230\u7684\u6570\u636e\u4e0d\u540c\u3002\u4e8b\u52a1B\u8fdb\u884cupdate,delete,insert\u7b49\u4e4b\u540e\u63d0\u4ea4\uff0c\u4e8b\u52a1A\u5219\u4f1a\u5728\u7b2c\u4e8c\u6b21\u8bfb\u53d6\u65f6\u8bfb\u5230\u4e0d\u540c\u7684\u6570\u636e\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u9488\u5bf9update\u64cd\u4f5c\uff0c\u5e7b\u8bfb\u5219\u9488\u5bf9insert\u4e0edelete\u64cd\u4f5c\u3002\n\n\n|\u9694\u79bb\u7ea7\u522b|\u810f\u8bfb|\u4e0d\u53ef\u91cd\u590d\u5ea6|\u5e7b\u8bfb|\n|-|-|-|-|\n|ReadUnCommited|\u53ef\u80fd|\u53ef\u80fd|\u53ef\u80fd|\n|ReadCommited|\u4e0d\u53ef\u80fd|\u53ef\u80fd|\u53ef\u80fd|\n|RepeatedRead|\u4e0d\u53ef\u80fd|\u4e0d\u53ef\u80fd|\u53ef\u80fd|\n|Serializable|\u4e0d\u53ef\u80fd|\u4e0d\u53ef\u80fd|\u4e0d\u53ef\u80fd|\n\n[\u53c2\u8003\u67e5\u9605](https:\/\/blog.csdn.net\/m2606707610\/article\/details\/103470040)\n\n#### Mysql \u5728\u53ef\u91cd\u590d\u5ea6\u7684\u9694\u79bb\u7ea7\u522b\u4e0b\u4f1a\u4e0d\u4f1a\u6709\u5e7b\u8bfb\u7684\u60c5\u51b5\uff0c\u4e3a\u4ec0\u4e48\uff1f\n[\u53c2\u8003\u9605\u8bfb](https:\/\/blog.csdn.net\/u011277123\/article\/details\/107868336)\n\n#### Mysql \u4e8b\u52a1\u662f\u5982\u4f55\u5b9e\u73b0\u7684\nmysql\u5bf9\u5e76\u53d1\u7684\u5904\u7406\uff0c\u8fd9\u5176\u4e2d\u7275\u626f\u5230\u7684\u6280\u672f\u5176\u5b9e\u6709\u4e09\u4e2a\uff0c\u5206\u522b\u662f\u65e5\u5fd7\u6587\u4ef6\uff0cmysql\u9501\u6280\u672f\u548cMVCC\n\u201cInnoDB\uff08MySQL\u6570\u636e\u5e93\u7684\u5f15\u64ce\u4e4b\u4e00\uff09\u7684MVCC\uff0c\u662f\u901a\u8fc7\u5728\u6bcf\u884c\u8bb0\u5f55\u7684\u540e\u9762\u4fdd\u5b58\u4e24\u4e2a\u9690\u85cf\u7684\u5217\u6765\u5b9e\u73b0\u7684\uff0c\u5176\u4e2d\u4e00\u4e2a\u5217\u4fdd\u5b58\u884c\u7684\u521b\u5efa\u65f6\u95f4\uff0c\u4e00\u4e2a\u5217\u4fdd\u5b58\u4e86\u884c\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u5f53\u7136\u5b58\u50a8\u7684\u5e76\u4e0d\u662f\u5b9e\u9645\u7684\u65f6\u95f4\u503c\uff0c\u800c\u662f\u7cfb\u7edf\u7684\u7248\u672c\u53f7\u3002\u201d\u7b80\u5355\u8bf4\u6765\u5b9e\u73b0\u662f\u60f3\u5c31\u662f\u901a\u8fc7\u6570\u636e\u7684\u591a\u7248\u672c\u6765\u505a\u5230\u8bfb\u5199\u5206\u79bb\u7684\u64cd\u4f5c\uff0c\u4ece\u800c\u5c31\u53ef\u4ee5\u505a\u5230\u4e0d\u52a0\u9501\u8bfb\u8fdb\u800c\u505a\u5230\u8bfb\u5199\u5e76\u884c\u3002\u800cMySQL\u5728mysql\u5b9e\u73b0\u4f9d\u8d56\u7684\u5c31\u662fundo log\u548cread view\uff0c\u5176\u4e2dundo log\u4e2d\u6709\u8bb0\u5f55\u67d0\u884c\u6570\u636e\u7684\u591a\u4e2a\u7248\u672c\u6570\u636e\uff0cread view\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u5f53\u524d\u7248\u672c\u6570\u636e\u7684\u53ef\u89c1\u6027\uff0c\u5173\u4e8e\u8bfb\u5199\u9501\u5728\u63d0\u4ea4\u8bfb\u7ea7\u522b\u4e0b\u7684\u5e94\u7528\u5982\u4e0b\u56fe\u6240\u793a\uff1a\n![image.png](http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-02-23\/43WVqGPOgsvObIrCcXDldk.png)\n\n\u603b\u7684\u8bf4\u6765\u5b9e\u73b0\u4e8b\u52a1\u91c7\u53d6\u4e86\u54ea\u4e9b\u6280\u672f\u4ee5\u53ca\u601d\u60f3\uff1f\u539f\u5b50\u6027\u4f7f\u7528 undo log \uff0c\u4ece\u800c\u8fbe\u5230\u56de\u6eda\uff1b\u6301\u4e45\u6027\uff1a\u7528 redo log\uff0c\u4ece\u800c\u8fbe\u5230\u6545\u969c\u540e\u6062\u590d\uff1b\u9694\u79bb\u6027\u4f7f\u7528\u9501\u4ee5\u53caMVCC,\u8fd0\u7528\u7684\u4f18\u5316\u601d\u60f3\u6709\u8bfb\u5199\u5206\u79bb\uff0c\u8bfb\u8bfb\u5e76\u884c\uff0c\u8bfb\u5199\u5e76\u884c\uff1b\u4e00\u81f4\u6027\uff1a\u901a\u8fc7\u56de\u6eda\uff0c\u4ee5\u53ca\u6062\u590d\uff0c\u548c\u5728\u5e76\u53d1\u73af\u5883\u4e0b\u7684\u9694\u79bb\u505a\u5230\u4e00\u81f4\u6027\u3002\n[\u53c2\u8003\u9605\u8bfb](https:\/\/www.cnblogs.com\/ffdsj\/p\/12266539.html)\n\n#### Binlog \u548c Redo log \u7684\u533a\u522b\u662f\u4ec0\u4e48\uff0c\u5206\u522b\u662f\u4ec0\u4e48\u7528\uff1f\nredo log\u662fInnoDB\u5f15\u64ce\u7279\u6709\u7684\uff1bbinlog\u662fMySQL\u7684Server\u5c42\u5b9e\u73b0\u7684\uff0c\u6240\u6709\u5f15\u64ce\u90fd\u53ef\u4ee5\u4f7f\u7528\u3002\nredo log\u662f\u7269\u7406\u65e5\u5fd7\uff0c\u8bb0\u5f55\u7684\u662f\u201c\u5728\u67d0\u4e2a\u6570\u636e\u9875\u4e0a\u505a\u4e86\u4ec0\u4e48\u4fee\u6539\u201d\uff1bbinlog\u662f\u903b\u8f91\u65e5\u5fd7\uff0c\u8bb0\u5f55\u7684\u662f\u8fd9\u4e2a\u8bed\u53e5\u7684\u539f\u59cb\u903b\u8f91\uff0c\u6bd4\u5982\u201c\u7ed9ID=2\u8fd9\u4e00\u884c\u7684c\u5b57\u6bb5\u52a01 \u201d\u3002\nredo log\u662f\u5faa\u73af\u5199\u7684\uff0c\u7a7a\u95f4\u56fa\u5b9a\u4f1a\u7528\u5b8c\uff1bbinlog\u662f\u53ef\u4ee5\u8ffd\u52a0\u5199\u5165\u7684\u3002\u201c\u8ffd\u52a0\u5199\u201d\u662f\u6307binlog\u6587\u4ef6\u5199\u5230\u4e00\u5b9a\u5927\u5c0f\u540e\u4f1a\u5207\u6362\u5230\u4e0b\u4e00\u4e2a\uff0c\u5e76\u4e0d\u4f1a\u8986\u76d6\u4ee5\u524d\u7684\u65e5\u5fd7\u3002\n\n#### \u8c08\u4e00\u8c08 MVCC \u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\n[\u53c2\u8003\u9605\u8bfb](https:\/\/www.cnblogs.com\/myseries\/p\/10930910.html)\n\n#### Innodb \u548c MyISAM \u7684\u533a\u522b\u662f\u4ec0\u4e48\n[\u53c2\u8003\u9605\u8bfb](https:\/\/blog.csdn.net\/qq_27607965\/article\/details\/79925288)\n\n#### Innodb \u7684\u9ed8\u8ba4\u52a0\u9501\u65b9\u5f0f\u662f\u4ec0\u4e48\uff0c\u662f\u600e\u4e48\u5b9e\u73b0\u7684\n[\u53c2\u8003\u9605\u8bfb](https:\/\/blog.csdn.net\/winterfeng123\/article\/details\/79048524)\n\n#### \u5982\u4f55\u9ad8\u6548\u5904\u7406\u5927\u5e93 DDL\n\n#### Mysql \u7d22\u5f15\u91cd\u5efa\n\u5f53\u4f60\u5bf9InnoDB\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\u65f6\uff0c\u4f8b\u5982\u5220\u9664\u4e00\u4e9b\u884c\uff0c\u8fd9\u4e9b\u884c\u53ea\u662f\u88ab\u6807\u8bb0\u4e3a\u201c\u5df2\u5220\u9664\u201d\uff0c\u800c\u4e0d\u662f\u771f\u7684\u4ece\u7d22\u5f15\u4e2d\u7269\u7406\u5220\u9664\u4e86\uff0c\u56e0\u800c\u7a7a\u95f4\u4e5f\u6ca1\u6709\u771f\u7684\u88ab\u91ca\u653e\u56de\u6536\u3002\nInnoDB\u7684Purge\u7ebf\u7a0b\u4f1a\u5f02\u6b65\u7684\u6765\u6e05\u7406\u8fd9\u4e9b\u6ca1\u7528\u7684\u7d22\u5f15\u952e\u548c\u884c\uff0c\u4f46\u662f\u4f9d\u7136\u6ca1\u6709\u628a\u8fd9\u4e9b\u91ca\u653e\u51fa\u6765\u7684\u7a7a\u95f4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u91cd\u65b0\u4f7f\u7528\uff0c\u56e0\u800c\u4f1a\u5bfc\u81f4\u9875\u9762\u4e2d\u5b58\u5728\u5f88\u591a\u7a7a\u6d1e\u3002\n\u5982\u679c\u8868\u7ed3\u6784\u4e2d\u5305\u542b\u52a8\u6001\u957f\u5ea6\u5b57\u6bb5\uff0c\u90a3\u4e48\u8fd9\u4e9b\u7a7a\u6d1e\u751a\u81f3\u53ef\u80fd\u4e0d\u80fd\u88abInnoDB\u91cd\u65b0\u7528\u6765\u5b58\u65b0\u7684\u884c\uff0c\u56e0\u4e3a\u7a7a\u95f4\u7a7a\u95f4\u957f\u5ea6\u4e0d\u8db3\u3002\n\u6709\u4e9b\u7528\u6237\u53ef\u80fd\u4f1a\u4f7f\u7528 OPTIMIZE TABLE \u6216\u8005 ALTER TABLE <table> ENGINE=InnoDB \u6765\u91cd\u5efa\u8fd9\u4e9b\u8868\uff0c\u4f46\u662f\u8fd9\u6837\u4f1a\u5bfc\u81f4\u8868\u7684\u62f7\u8d1d\uff0c\u5982\u679c\u4e34\u65f6\u7a7a\u95f4\u4e0d\u8db3\u751a\u81f3\u4e0d\u8db3\u4ee5\u8fdb\u884c\u4e00\u6b21 OPTIMIZE TABLE \u64cd\u4f5c\u3002\u5e76\u4e14\u5982\u679c\u4f60\u7528\u7684\u662f\u5171\u4eab\u8868\u7a7a\u95f4\u65b9\u5f0f\uff0cOPTIMIZE TABLE \u4f1a\u5bfc\u81f4\u4f60\u7684\u5171\u4eab\u8868\u7a7a\u95f4\u6587\u4ef6\u6301\u7eed\u589e\u5927\uff0c\u56e0\u4e3a\u6574\u7406\u7684\u7d22\u5f15\u548c\u6570\u636e\u90fd\u8ffd\u52a0\u5728\u6570\u636e\u6587\u4ef6\u7684\u672b\u5c3e\u3002\nInnoDB\u7c7b\u578b\u7684\u8868\u662f\u65e0\u6cd5\u4f7f\u7528optimize table\u547d\u4ee4\u3002\n```mysql\nalert table test drop primary key id;\nalert table test add primary key(id);\n\nalter table test drop index k;\nalter table test add index(k);\n```\n[\u53c2\u8003\u9605\u8bfb](https:\/\/www.cnblogs.com\/liuchd\/p\/13278022.html)\n\n#### \u5bf9\u4e8e\u591a\u5217\u7d22\u5f15\uff0c\u54ea\u4e9b\u60c5\u51b5\u4e0b\u80fd\u7528\u5230\u7d22\u5f15\uff0c\u54ea\u4e9b\u60c5\u51b5\u7528\u4e0d\u5230\u7d22\u5f15\n\u7531\u4e8e\u7d22\u5f15\u6570\u636e\u7ed3\u6784\u4e3aB+\u6811\uff0c\u6392\u5e8f\u89c4\u5219\u6309\u5b57\u6bb5\u6bd4\u5982 (a,b,c\uff09\u5efa\u7acb\u7d22\u5f15\uff0ca,b,c\u4e09\u4e2a\u5143\u7d20\u5efa\u7acb\u7d22\u5f15\u6811\uff0c\u4f1a\u5148\u6309a\u5b57\u6bb5\u8fdb\u884c\u6392\u5e8f\uff0c\u7136\u540e\u518d\u5bf9b\uff0cc\u8fdb\u884c\u6392\u5e8f\uff0c\u67e5\u8be2\u65f6\u5411\u4e0b\u627e\u8282\u70b9\u3002\u5373a a,b a,b,c\u80fd\u547d\u4e2d\u6240\u4ee5\uff0c\u5176\u4f59\u4e0d\u884c\u3002\n\n#### \u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\u7684\u4f7f\u7528\u573a\u666f\n\u5171\u4eab\u9501 lock share mode \u53ea\u662f\u6392\u9664\u5176\u4ed6\u8fdb\u7a0b\u5bf9\u5bf9\u5e94\u6570\u636e\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u800cfor update\u6392\u5b83\u9501\u5bf9\u4e8e\u5176\u4ed6\u8fdb\u7a0b\u5219\u4e0d\u53ef\u8bfb\u4e5f\u4e0d\u53ef\u5199\n\n#### \u5173\u7cfb\u578b\u6570\u636e\u5e93\u548c\u975e\u5173\u7cfb\u6570\u636e\u5e93\u7684\u4f18\u7f3a\u70b9\n[\u53c2\u8003\u9605\u8bfb](https:\/\/blog.csdn.net\/weixin_45847162\/article\/details\/107447744)\n\n#### Mysql \u4ec0\u4e48\u60c5\u51b5\u4f1a\u9020\u6210\u6162\u67e5\uff0c\u5982\u4f55\u67e5\u770b\u6162\u67e5\u8be2\n\u4f7f\u7528explain\u67e5\u770b\u5177\u4f53sql\u662f\u5426\u6709\u547d\u4e2d\u7d22\u5f15\uff0c\u5176\u4e2dmysql\u7684\u5f00\u542f\u6162\u67e5\u8be2\u68c0\u6d4b\u65f6\uff0c\u53ef\u4ee5\u8bb0\u5f55\u6162\u67e5\u8be2\u7684sql\n\n#### \u5982\u4f55\u5904\u7406\u6162\u67e5\u8be2\uff0c\u4f60\u4e00\u822c\u662f\u600e\u4e48\u5904\u7406\u6162\u67e5\u8be2\u7684\n\u6839\u636e\u67e5\u8be2\u8bed\u53e5\uff0c\u5efa\u7acb\u7d22\u5f15\n\n#### Mysql \u4e2d\u63d2\u5165\u6570\u636e\u4f7f\u7528\u81ea\u589e id \u597d\u8fd8\u662f\u4f7f\u7528 uuid\uff0c\u4e3a\u4ec0\u4e48\uff1f\n[\u53c2\u8003\u9605\u8bfb](https:\/\/www.cnblogs.com\/barrywxx\/p\/7723122.html)\n\n#### Mysql \u96c6\u7fa4\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f\uff0c\u5206\u522b\u9002\u7528\u4e8e\u4ec0\u4e48\u573a\u666f\n#### Mysql \u4e3b\u4ece\u6a21\u5f0f\u5982\u4f55\u4fdd\u8bc1\u4e3b\u4ece\u5f3a\u4e00\u81f4\u6027\n#### Mysql \u96c6\u7fa4\u5982\u4f55\u4fdd\u8bc1\u4e3b\u4ece\u53ef\u7528\u6027\n#### Mysql \u8bfb\u5199\u5206\u79bb\u6709\u54ea\u4e9b\u89e3\u51b3\u529e\u6cd5","htmlContent":"<h1 class=\"my-blog-head\" id=\"my-blog-head0\">\u5e38\u89c1\u9762\u8bd5\u9898\u76ee\u6c47\u603b<\/h1><h4 class=\"my-blog-head\" id=\"my-blog-head1\">\u6570\u636e\u5e93\u4e09\u8303\u5f0f<\/h4><pre><code>1NF:\u5b57\u6bb5\u4e0d\u53ef\u5206;\n\n2NF:\u6709\u4e3b\u952e\uff0c\u975e\u4e3b\u952e\u5b57\u6bb5\u4f9d\u8d56\u4e3b\u952e;\n\n3NF:\u975e\u4e3b\u952e\u5b57\u6bb5\u4e0d\u80fd\u76f8\u4e92\u4f9d\u8d56;\n\n\u89e3\u91ca:\n\n1NF:\u539f\u5b50\u6027 \u5b57\u6bb5\u4e0d\u53ef\u518d\u5206,\u5426\u5219\u5c31\u4e0d\u662f\u5173\u7cfb\u6570\u636e\u5e93;\n\n2NF:\u552f\u4e00\u6027 \u4e00\u4e2a\u8868\u53ea\u8bf4\u660e\u4e00\u4e2a\u4e8b\u7269;\n\n3NF:\u6bcf\u5217\u90fd\u4e0e\u4e3b\u952e\u6709\u76f4\u63a5\u5173\u7cfb\uff0c\u4e0d\u5b58\u5728\u4f20\u9012\u4f9d\u8d56;\n<\/code><\/pre>\n<h4 class=\"my-blog-head\" id=\"my-blog-head2\">\u5206\u522b\u8bf4\u4e00\u4e0b\u8303\u5f0f\u548c\u53cd\u8303\u5f0f\u7684\u4f18\u7f3a\u70b9<\/h4><pre><code>\u9075\u5faa\u8303\u5f0f\u8bbe\u8ba1\u53ef\u4ee5\u51cf\u5c11\u5b57\u6bb5\u5197\u4f59\uff0c\u800c\u5bf9\u4e8e\u5b9e\u9645\u5e94\u7528\u573a\u666f\u800c\u8a00\uff0c\u6211\u4eec\u5bf9\u4e8e\u6570\u636e\u5e93\u7684DML\uff08 select\\delete\\update\\insert\uff09\u7684\u9ad8\u9891\u64cd\u4f5c\u901a\u5e38\u96c6\u4e2d\u4e8e\u6570\u636e\u67e5\u8be2\uff0c\u6545\u9002\u5f53\u7684\u53cd\u8303\u5f0f\u8bbe\u8ba1\uff0c\u5197\u4f59\u4e00\u4e9b\u8868\u5b57\u6bb5\uff0c\u4ece\u800c\u53ef\u4ee5\u51cf\u5c11\u67e5\u8be2\u65f6\u7684\u7269\u7406\u6d88\u8017\u3002<\/code><\/pre>\n<p><a href=\"https:\/\/www.cnblogs.com\/xiaozengzeng\/p\/10720226.html\">\u53c2\u770b\u67e5\u9605<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head3\">Mysql \u6570\u636e\u5e93\u7d22\u5f15\u3002B+ \u6811\u548c B \u6811\u7684\u533a\u522b<\/h4><p><a href=\"https:\/\/www.cnblogs.com\/xueqiuqiu\/articles\/8779029.html\">\u53c2\u770b\u67e5\u9605<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head4\">\u4e3a\u4ec0\u4e48 B+ \u6811\u6bd4 B \u6811\u66f4\u9002\u5408\u5e94\u7528\u4e8e\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u9664\u4e86\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u8fd8\u6709\u4ec0\u4e48\u5730\u65b9\u7528\u5230\u4e86\uff08\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7d22\u5f15\uff09<\/h4><p>[\u53c2\u8003\u67e5\u9605]\uff08<a href=\"https:\/\/blog.csdn.net\/ldw662523\/article\/details\/79586073%EF%BC%89\">https:\/\/blog.csdn.net\/ldw662523\/article\/details\/79586073\uff09<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head5\">\u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15\uff0c\u524d\u7f00\u7d22\u5f15\u548c\u8986\u76d6\u7d22\u5f15<\/h4><table>\n<thead>\n<tr>\n<th>id<\/th>\n<th>a<\/th>\n<th>b<\/th>\n<th>c<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>1<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>3<\/td>\n<td>3<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>4<\/td>\n<td>4<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>MySQL\u6570\u636e\u8868\uff0c\u805a\u7c07\u7d22\u5f15\u4e00\u822c\u4ee5\u4e3b\u952e\u4f5c\u4e3a\u5efa\u7acb\u4e00\u9897B+\u6811(\u82e5\u65e0\u58f0\u660e\u4e3b\u952e\uff0c\u5219\u4f1a\u81ea\u52a8\u751f\u6210\u9690\u6027\u7684row_id\uff09\u3002\u805a\u7c07\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u8bb0\u5f55\u6240\u6709\u6240\u6709\u884c\u6570\u636e\uff0c\u800c\u975e\u805a\u7c07\u7d22\u5f15\u6811\u7684\u53f6\u5b50\u8282\u70b9\uff0c\u53ea\u8bb0\u5f55\u7684\u4e3b\u952e\u4e0e\u7d22\u5f15\u5b57\u6bb5\u3002<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u6545\u5728\u6709\u8986\u76d6\u7d22\u5f15\u8fd9\u4e2a\u8bf4\u6cd5\uff0c\u5982\u679c\u67e5\u8be2\u65f6\u4f7f\u7528\u7684\u662f\u975e\u805a\u7c07\u7d22\u5f15\uff0c\u5982\u679c\u5efa\u7acb\u666e\u901aindex(a),\u67e5\u8be2\u7ed3\u679c\u5b57\u6bb5\u4e0d\u540c\u5219\u4f1a\u5f71\u54cd\u662f\u5426\u9700\u8981\u8d70\u56de\u8868\u67e5\u8be2\u64cd\u4f5c\u3002\u4f8b\u5982<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody><\/table>\n<ul>\n<li>select id,a,b from table where a = 1;  \/\/ \u9700\u8981\u56de\u8868<\/li>\n<li>select id,a from table where a = 1;    \/\/ \u65e0\u9700\u56de\u8868\uff0c\u56e0\u4e3a\u975e\u805a\u7c07\u7d22\u5f15\u6811\u5df2\u5305\u542b\u4e86 id\u4e0ea\u4e24\u4e2a\u67e5\u8be2\u7ed3\u679c\u5b57\u6bb5<br>[\u603b\u7ed3]\uff08<a href=\"http:\/\/hyperf.lubiao9.cn\/#\/article?id=3CLAmnSzOH9TBiM9trzxGs%EF%BC%89\">http:\/\/hyperf.lubiao9.cn\/#\/article?id=3CLAmnSzOH9TBiM9trzxGs\uff09<\/a><\/li>\n<\/ul>\n<p>\u8bbe\u7f6e\u7d22\u5f15index(a,b)<\/p>\n<ul>\n<li>\u524d\u7f00\u7d22\u5f15<\/li>\n<li>\u8986\u76d6\u7d22\u5f15<\/li>\n<li>select a,b from table where a = 1 and b = 2;\/\/ \u8986\u76d6\u7d22\u5f15<\/li>\n<li>select a from table where a = 1;            \/\/  \u524d\u7f00\u7d22\u5f15<\/li>\n<li>select b from table where b = 1;        \/\/ \u65e0\u6cd5\u547d\u4e2d\u7d22\u5f15<h4 class=\"my-blog-head\" id=\"my-blog-head6\">\u4ecb\u7ecd\u4e00\u4e0b\u6570\u636e\u5e93\u7684\u4e8b\u52a1<\/h4>\u6570\u636e\u5e93\u4e2d\u7684\u4e8b\u52a1\u662f\u4f5c\u4e3a\u5355\u4e2a\u903b\u8f91\u5de5\u4f5c\u5355\u5143\u6267\u884c\u7684\u4e00\u7cfb\u5217\u64cd\u4f5c\u3002\uff08\u591a\u6761 SQL \u8bed\u53e5\uff0c\u8981\u4e48\u5168\u90e8\u6267\u884c\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u6267\u884c\u5931\u8d25\u3002\uff09<br>\u6570\u636e\u5e93\u8981\u652f\u6301\u4e8b\u52a1\u64cd\u4f5c\u5fc5\u987b\u6ee1\u8db3\u56db\u4e2a\u7279\u6027\uff0c\u4e5f\u5c31\u662f\u5e38\u8bf4\u7684ACID\u3002<br>\u539f\u5b50\u6027\uff0c\u9694\u79bb\u6027\uff0c\u4e00\u81f4\u6027\uff0c\u6301\u4e45\u6027<br>A:\u539f\u5b50\u6027\uff08Atomicity\uff09\uff1a\u539f\u5b50\u6027\u662f\u6307\u4e8b\u52a1\u5305\u542b\u7684\u6240\u6709\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u5931\u8d25\uff0c\u5373\u5f20\u4e09\u7ed9\u674e\u56db\u8f6c\u8d26\uff0c\u8981\u4e48\u5f20\u4e09\u94b1\u51cf\u5c11\u674e\u56db\u94b1\u589e\u591a\uff0c\u8981\u4e48\u5f20\u4e09\u548c\u674e\u56db\u94b1\u90fd\u4e0d\u53d8\u3002<br>C:\u4e00\u81f4\u6027\uff08Consistency\uff09\uff1a\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u4e4b\u524d\u548c\u6267\u884c\u4e4b\u540e\u90fd\u5fc5\u987b\u5904\u4e8e\u4e00\u81f4\u6027\u72b6\u6001\uff0c\u5373\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002\u5f20\u4e09\u548c\u674e\u56db\u5404\u6709\u4e00\u5343\u5757\uff0c\u5f20\u4e09\u7ed9\u674e\u56db\u8f6c100\uff0c\u5f20\u4e09\u7684\u94b1\u5c31\u8981\u53d8\u6210900\uff0c\u674e\u56db\u7684\u94b1\u8981\u53d8\u62101100<br>I:\u9694\u79bb\u6027\uff08Isolation\uff09\uff1a\u591a\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u540c\u4e00\u4e2a\u64cd\u4f5c\u65f6\u4e0d\u80fd\u88ab\u5176\u4ed6\u4e8b\u52a1\u5e72\u6270\u3002<br>D:\u6301\u4e45\u6027\uff08dependency\uff09\uff1a\u4e00\u4e2a\u4e8b\u52a1\u4e00\u65e6\u63d0\u4ea4\uff0c\u5b83\u5bf9\u6570\u636e\u5e93\u4e2d\u6570\u636e\u7684\u6539\u53d8\u5c31\u5e94\u8be5\u662f\u6c38\u4e45\u6027\u7684<\/li>\n<\/ul>\n<h4 class=\"my-blog-head\" id=\"my-blog-head7\">Mysql \u6709\u54ea\u4e9b\u9694\u79bb\u7ea7\u522b<\/h4><p>ReadUnCommited\uff08\u8bfb\u672a\u63d0\u4ea4\uff09<br>\u80fd\u8bfb\u53d6\u5230\u5176\u4ed6\u4e8b\u52a1\u4fee\u6539\u672a\u63d0\u4ea4\u7684\u6570\u636e\uff0c\u67e5\u8be2\u4e0d\u52a0\u9501\uff0c\u6545\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u662f\u6700\u5dee\u7684\uff0c\u4f1a\u51fa\u73b0\u5e7b\u8bfb\uff0c\u810f\u8bfb\u7b49\u60c5\u51b5<br>ReadCommited\uff08\u8bfb\u5df2\u63d0\u4ea4\uff09<br>\u80fd\u8bfb\u5230\u5df2\u7ecf\u63d0\u4ea4\u7684\u6570\u636e\u3002\u8fd9\u662f\u5404\u79cd\u7cfb\u7edf\u4e2d\u6700\u5e38\u7528\u7684\u4e00\u79cd\u9694\u79bb\u7ea7\u522b\uff0c\u4e5f\u662fSQL Server\u548cOracle\u7684\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\u3002\u8fd9\u79cd\u9694\u79bb\u7ea7\u522b\u80fd\u591f\u6709\u6548\u7684\u907f\u514d\u810f\u8bfb\uff0c\u4f46\u9664\u975e\u5728\u67e5\u8be2\u4e2d\u663e\u793a\u7684\u52a0\u9501\u3002\u201c\u8bfb\u63d0\u4ea4\u201d\u53ea\u80fd\u907f\u514d\u201c\u810f\u8bfb\u201d\uff0c\u5e76\u4e0d\u80fd\u907f\u514d\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u548c\u201c\u5e7b\u8bfb\u201d\u3002<br>RepeatedRead\uff08\u53ef\u91cd\u590d\u8bfb\uff09<br>\u53ef\u91cd\u590d\u8bfb\uff0c\u5c31\u662f\u4e13\u95e8\u9488\u5bf9\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u8fd9\u79cd\u95ee\u9898\u800c\u5236\u5b9a\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u7684\u907f\u514d\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u3002\u5e76\u4e14\u5b83\u4e5f\u662fMySql\u7684\u9ed8\u8ba4\u9694\u79bb\u7ea7\u522b\u3002<br>\u5f53\u4e8b\u52a1\u542f\u52a8\u65f6\uff0c\u4e0d\u5141\u8bb8\u8fdb\u884c\u201c\u4fee\u6539\u64cd\u4f5c\uff08Update\uff09\u201d\uff0c\u5373\u5bf9\u8be5\u6570\u636e\u52a0\u9501\uff08\u884c\u9501\uff09\uff0c\u800c\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u6070\u6070\u662f\u56e0\u4e3a\u4e24\u6b21\u8bfb\u53d6\u4e4b\u95f4\u8fdb\u884c\u4e86\u6570\u636e\u7684\u4fee\u6539\uff0c\u56e0\u6b64\uff0c\u201c\u53ef\u91cd\u590d\u8bfb\u201d\u80fd\u591f\u6709\u6548\u7684\u907f\u514d\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\uff0c\u4f46\u5374\u907f\u514d\u4e0d\u4e86\u201c\u5e7b\u8bfb\u201d\uff0c\u56e0\u4e3a\u5e7b\u8bfb\u662f\u7531\u4e8e\u201c\u63d2\u5165\u6216\u8005\u5220\u9664\u64cd\u4f5c\uff08Insert or Delete\uff09\u201d\u800c\u4ea7\u751f\u7684\u3002<br>Serializable\uff08\u7a9c\u884c\uff09<br>\u6570\u636e\u5e93\u6700\u9ad8\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u8fd9\u79cd\u7ea7\u522b\u4e0b\uff0c\u4e8b\u52a1\u201c\u4e32\u884c\u5316\u987a\u5e8f\u6267\u884c\u201d\uff0c\u4e5f\u5c31\u662f\u4e00\u4e2a\u4e00\u4e2a\u6392\u961f\u6267\u884c\uff08\u76f8\u5f53\u4e8e\u52a0\u4e86\u8868\u9501\uff09\u3002<br>\u8fd9\u79cd\u7ea7\u522b\u4e0b\uff0c\u201c\u810f\u8bfb\u201d\u3001\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\u3001\u201c\u5e7b\u8bfb\u201d\u90fd\u4e0d\u4f1a\u51fa\u73b0\uff0c\u4f46\u662f\u6267\u884c\u6548\u7387\u975e\u5e38\u5dee\uff0c\u6027\u80fd\u5f00\u9500\u4e5f\u6700\u5927\uff0c\u6240\u4ee5\u57fa\u672c\u6ca1\u4eba\u4f1a\u7528\u3002<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head8\">Mysql \u4ec0\u4e48\u60c5\u51b5\u4f1a\u9020\u6210\u810f\u8bfb\u3001\u4e0d\u53ef\u91cd\u590d\u8bfb\u3001\u5e7b\u8bfb\uff1f\u5982\u4f55\u89e3\u51b3<\/h4><blockquote>\n<p>\u810f\u8bfb \u4e8b\u52a1A\u8bfb\u53d6\u5230\u4e8b\u52a1B\u56de\u6eda\u672a\u63d0\u4ea4\u7684\u810f\u6570\u636e\uff0c\u5bf9\u4e8eMySQL\u800c\u8a00\uff0c\u810f\u8bfb\u53ea\u4f1a\u5728RU\u7ea7\u522b\u7684\u4e8b\u52a1\u4e2d\u51fa\u73b0\u3002<\/p>\n<\/blockquote>\n<blockquote>\n<p>\u201c\u4e0d\u53ef\u91cd\u590d\u8bfb\u201d\uff0c\u201c\u5e7b\u8bfb\u201d\u6307\u7684\u662f\u5728\u4e00\u4e2a\u4e8b\u52a1\u5355\u5143\u5185\uff0c\u4e8b\u52a1A\u9996\u6b21\u8bfb\u53d6\u5230\u7684\u6570\u636e\uff0c\u8ddf\u7b2c\u4e8c\u6b21\u8bfb\u53d6\u5230\u7684\u6570\u636e\u4e0d\u540c\u3002\u4e8b\u52a1B\u8fdb\u884cupdate,delete,insert\u7b49\u4e4b\u540e\u63d0\u4ea4\uff0c\u4e8b\u52a1A\u5219\u4f1a\u5728\u7b2c\u4e8c\u6b21\u8bfb\u53d6\u65f6\u8bfb\u5230\u4e0d\u540c\u7684\u6570\u636e\uff0c\u4e0d\u53ef\u91cd\u590d\u8bfb\u9488\u5bf9update\u64cd\u4f5c\uff0c\u5e7b\u8bfb\u5219\u9488\u5bf9insert\u4e0edelete\u64cd\u4f5c\u3002<\/p>\n<\/blockquote>\n<table>\n<thead>\n<tr>\n<th>\u9694\u79bb\u7ea7\u522b<\/th>\n<th>\u810f\u8bfb<\/th>\n<th>\u4e0d\u53ef\u91cd\u590d\u5ea6<\/th>\n<th>\u5e7b\u8bfb<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>ReadUnCommited<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>ReadCommited<\/td>\n<td>\u4e0d\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>RepeatedRead<\/td>\n<td>\u4e0d\u53ef\u80fd<\/td>\n<td>\u4e0d\u53ef\u80fd<\/td>\n<td>\u53ef\u80fd<\/td>\n<\/tr>\n<tr>\n<td>Serializable<\/td>\n<td>\u4e0d\u53ef\u80fd<\/td>\n<td>\u4e0d\u53ef\u80fd<\/td>\n<td>\u4e0d\u53ef\u80fd<\/td>\n<\/tr>\n<\/tbody><\/table>\n<p><a href=\"https:\/\/blog.csdn.net\/m2606707610\/article\/details\/103470040\">\u53c2\u8003\u67e5\u9605<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head9\">Mysql \u5728\u53ef\u91cd\u590d\u5ea6\u7684\u9694\u79bb\u7ea7\u522b\u4e0b\u4f1a\u4e0d\u4f1a\u6709\u5e7b\u8bfb\u7684\u60c5\u51b5\uff0c\u4e3a\u4ec0\u4e48\uff1f<\/h4><p><a href=\"https:\/\/blog.csdn.net\/u011277123\/article\/details\/107868336\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head10\">Mysql \u4e8b\u52a1\u662f\u5982\u4f55\u5b9e\u73b0\u7684<\/h4><p>mysql\u5bf9\u5e76\u53d1\u7684\u5904\u7406\uff0c\u8fd9\u5176\u4e2d\u7275\u626f\u5230\u7684\u6280\u672f\u5176\u5b9e\u6709\u4e09\u4e2a\uff0c\u5206\u522b\u662f\u65e5\u5fd7\u6587\u4ef6\uff0cmysql\u9501\u6280\u672f\u548cMVCC<br>\u201cInnoDB\uff08MySQL\u6570\u636e\u5e93\u7684\u5f15\u64ce\u4e4b\u4e00\uff09\u7684MVCC\uff0c\u662f\u901a\u8fc7\u5728\u6bcf\u884c\u8bb0\u5f55\u7684\u540e\u9762\u4fdd\u5b58\u4e24\u4e2a\u9690\u85cf\u7684\u5217\u6765\u5b9e\u73b0\u7684\uff0c\u5176\u4e2d\u4e00\u4e2a\u5217\u4fdd\u5b58\u884c\u7684\u521b\u5efa\u65f6\u95f4\uff0c\u4e00\u4e2a\u5217\u4fdd\u5b58\u4e86\u884c\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u5f53\u7136\u5b58\u50a8\u7684\u5e76\u4e0d\u662f\u5b9e\u9645\u7684\u65f6\u95f4\u503c\uff0c\u800c\u662f\u7cfb\u7edf\u7684\u7248\u672c\u53f7\u3002\u201d\u7b80\u5355\u8bf4\u6765\u5b9e\u73b0\u662f\u60f3\u5c31\u662f\u901a\u8fc7\u6570\u636e\u7684\u591a\u7248\u672c\u6765\u505a\u5230\u8bfb\u5199\u5206\u79bb\u7684\u64cd\u4f5c\uff0c\u4ece\u800c\u5c31\u53ef\u4ee5\u505a\u5230\u4e0d\u52a0\u9501\u8bfb\u8fdb\u800c\u505a\u5230\u8bfb\u5199\u5e76\u884c\u3002\u800cMySQL\u5728mysql\u5b9e\u73b0\u4f9d\u8d56\u7684\u5c31\u662fundo log\u548cread view\uff0c\u5176\u4e2dundo log\u4e2d\u6709\u8bb0\u5f55\u67d0\u884c\u6570\u636e\u7684\u591a\u4e2a\u7248\u672c\u6570\u636e\uff0cread view\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u5f53\u524d\u7248\u672c\u6570\u636e\u7684\u53ef\u89c1\u6027\uff0c\u5173\u4e8e\u8bfb\u5199\u9501\u5728\u63d0\u4ea4\u8bfb\u7ea7\u522b\u4e0b\u7684\u5e94\u7528\u5982\u4e0b\u56fe\u6240\u793a\uff1a<br><img src=\"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2021-02-23\/43WVqGPOgsvObIrCcXDldk.png\" alt=\"image.png\"><\/p>\n<p>\u603b\u7684\u8bf4\u6765\u5b9e\u73b0\u4e8b\u52a1\u91c7\u53d6\u4e86\u54ea\u4e9b\u6280\u672f\u4ee5\u53ca\u601d\u60f3\uff1f\u539f\u5b50\u6027\u4f7f\u7528 undo log \uff0c\u4ece\u800c\u8fbe\u5230\u56de\u6eda\uff1b\u6301\u4e45\u6027\uff1a\u7528 redo log\uff0c\u4ece\u800c\u8fbe\u5230\u6545\u969c\u540e\u6062\u590d\uff1b\u9694\u79bb\u6027\u4f7f\u7528\u9501\u4ee5\u53caMVCC,\u8fd0\u7528\u7684\u4f18\u5316\u601d\u60f3\u6709\u8bfb\u5199\u5206\u79bb\uff0c\u8bfb\u8bfb\u5e76\u884c\uff0c\u8bfb\u5199\u5e76\u884c\uff1b\u4e00\u81f4\u6027\uff1a\u901a\u8fc7\u56de\u6eda\uff0c\u4ee5\u53ca\u6062\u590d\uff0c\u548c\u5728\u5e76\u53d1\u73af\u5883\u4e0b\u7684\u9694\u79bb\u505a\u5230\u4e00\u81f4\u6027\u3002<br><a href=\"https:\/\/www.cnblogs.com\/ffdsj\/p\/12266539.html\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head11\">Binlog \u548c Redo log \u7684\u533a\u522b\u662f\u4ec0\u4e48\uff0c\u5206\u522b\u662f\u4ec0\u4e48\u7528\uff1f<\/h4><p>redo log\u662fInnoDB\u5f15\u64ce\u7279\u6709\u7684\uff1bbinlog\u662fMySQL\u7684Server\u5c42\u5b9e\u73b0\u7684\uff0c\u6240\u6709\u5f15\u64ce\u90fd\u53ef\u4ee5\u4f7f\u7528\u3002<br>redo log\u662f\u7269\u7406\u65e5\u5fd7\uff0c\u8bb0\u5f55\u7684\u662f\u201c\u5728\u67d0\u4e2a\u6570\u636e\u9875\u4e0a\u505a\u4e86\u4ec0\u4e48\u4fee\u6539\u201d\uff1bbinlog\u662f\u903b\u8f91\u65e5\u5fd7\uff0c\u8bb0\u5f55\u7684\u662f\u8fd9\u4e2a\u8bed\u53e5\u7684\u539f\u59cb\u903b\u8f91\uff0c\u6bd4\u5982\u201c\u7ed9ID=2\u8fd9\u4e00\u884c\u7684c\u5b57\u6bb5\u52a01 \u201d\u3002<br>redo log\u662f\u5faa\u73af\u5199\u7684\uff0c\u7a7a\u95f4\u56fa\u5b9a\u4f1a\u7528\u5b8c\uff1bbinlog\u662f\u53ef\u4ee5\u8ffd\u52a0\u5199\u5165\u7684\u3002\u201c\u8ffd\u52a0\u5199\u201d\u662f\u6307binlog\u6587\u4ef6\u5199\u5230\u4e00\u5b9a\u5927\u5c0f\u540e\u4f1a\u5207\u6362\u5230\u4e0b\u4e00\u4e2a\uff0c\u5e76\u4e0d\u4f1a\u8986\u76d6\u4ee5\u524d\u7684\u65e5\u5fd7\u3002<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head12\">\u8c08\u4e00\u8c08 MVCC \u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236<\/h4><p><a href=\"https:\/\/www.cnblogs.com\/myseries\/p\/10930910.html\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head13\">Innodb \u548c MyISAM \u7684\u533a\u522b\u662f\u4ec0\u4e48<\/h4><p><a href=\"https:\/\/blog.csdn.net\/qq_27607965\/article\/details\/79925288\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head14\">Innodb \u7684\u9ed8\u8ba4\u52a0\u9501\u65b9\u5f0f\u662f\u4ec0\u4e48\uff0c\u662f\u600e\u4e48\u5b9e\u73b0\u7684<\/h4><p><a href=\"https:\/\/blog.csdn.net\/winterfeng123\/article\/details\/79048524\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head15\">\u5982\u4f55\u9ad8\u6548\u5904\u7406\u5927\u5e93 DDL<\/h4><h4 class=\"my-blog-head\" id=\"my-blog-head16\">Mysql \u7d22\u5f15\u91cd\u5efa<\/h4><p>\u5f53\u4f60\u5bf9InnoDB\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\u65f6\uff0c\u4f8b\u5982\u5220\u9664\u4e00\u4e9b\u884c\uff0c\u8fd9\u4e9b\u884c\u53ea\u662f\u88ab\u6807\u8bb0\u4e3a\u201c\u5df2\u5220\u9664\u201d\uff0c\u800c\u4e0d\u662f\u771f\u7684\u4ece\u7d22\u5f15\u4e2d\u7269\u7406\u5220\u9664\u4e86\uff0c\u56e0\u800c\u7a7a\u95f4\u4e5f\u6ca1\u6709\u771f\u7684\u88ab\u91ca\u653e\u56de\u6536\u3002<br>InnoDB\u7684Purge\u7ebf\u7a0b\u4f1a\u5f02\u6b65\u7684\u6765\u6e05\u7406\u8fd9\u4e9b\u6ca1\u7528\u7684\u7d22\u5f15\u952e\u548c\u884c\uff0c\u4f46\u662f\u4f9d\u7136\u6ca1\u6709\u628a\u8fd9\u4e9b\u91ca\u653e\u51fa\u6765\u7684\u7a7a\u95f4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u91cd\u65b0\u4f7f\u7528\uff0c\u56e0\u800c\u4f1a\u5bfc\u81f4\u9875\u9762\u4e2d\u5b58\u5728\u5f88\u591a\u7a7a\u6d1e\u3002<br>\u5982\u679c\u8868\u7ed3\u6784\u4e2d\u5305\u542b\u52a8\u6001\u957f\u5ea6\u5b57\u6bb5\uff0c\u90a3\u4e48\u8fd9\u4e9b\u7a7a\u6d1e\u751a\u81f3\u53ef\u80fd\u4e0d\u80fd\u88abInnoDB\u91cd\u65b0\u7528\u6765\u5b58\u65b0\u7684\u884c\uff0c\u56e0\u4e3a\u7a7a\u95f4\u7a7a\u95f4\u957f\u5ea6\u4e0d\u8db3\u3002<br>\u6709\u4e9b\u7528\u6237\u53ef\u80fd\u4f1a\u4f7f\u7528 OPTIMIZE TABLE \u6216\u8005 ALTER TABLE <table> ENGINE=InnoDB \u6765\u91cd\u5efa\u8fd9\u4e9b\u8868\uff0c\u4f46\u662f\u8fd9\u6837\u4f1a\u5bfc\u81f4\u8868\u7684\u62f7\u8d1d\uff0c\u5982\u679c\u4e34\u65f6\u7a7a\u95f4\u4e0d\u8db3\u751a\u81f3\u4e0d\u8db3\u4ee5\u8fdb\u884c\u4e00\u6b21 OPTIMIZE TABLE \u64cd\u4f5c\u3002\u5e76\u4e14\u5982\u679c\u4f60\u7528\u7684\u662f\u5171\u4eab\u8868\u7a7a\u95f4\u65b9\u5f0f\uff0cOPTIMIZE TABLE \u4f1a\u5bfc\u81f4\u4f60\u7684\u5171\u4eab\u8868\u7a7a\u95f4\u6587\u4ef6\u6301\u7eed\u589e\u5927\uff0c\u56e0\u4e3a\u6574\u7406\u7684\u7d22\u5f15\u548c\u6570\u636e\u90fd\u8ffd\u52a0\u5728\u6570\u636e\u6587\u4ef6\u7684\u672b\u5c3e\u3002<br>InnoDB\u7c7b\u578b\u7684\u8868\u662f\u65e0\u6cd5\u4f7f\u7528optimize table\u547d\u4ee4\u3002<\/p>\n<pre><code class=\"language-mysql\">alert table test drop primary key id;\nalert table test add primary key(id);\n\nalter table test drop index k;\nalter table test add index(k);<\/code><\/pre>\n<p><a href=\"https:\/\/www.cnblogs.com\/liuchd\/p\/13278022.html\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head17\">\u5bf9\u4e8e\u591a\u5217\u7d22\u5f15\uff0c\u54ea\u4e9b\u60c5\u51b5\u4e0b\u80fd\u7528\u5230\u7d22\u5f15\uff0c\u54ea\u4e9b\u60c5\u51b5\u7528\u4e0d\u5230\u7d22\u5f15<\/h4><p>\u7531\u4e8e\u7d22\u5f15\u6570\u636e\u7ed3\u6784\u4e3aB+\u6811\uff0c\u6392\u5e8f\u89c4\u5219\u6309\u5b57\u6bb5\u6bd4\u5982 (a,b,c\uff09\u5efa\u7acb\u7d22\u5f15\uff0ca,b,c\u4e09\u4e2a\u5143\u7d20\u5efa\u7acb\u7d22\u5f15\u6811\uff0c\u4f1a\u5148\u6309a\u5b57\u6bb5\u8fdb\u884c\u6392\u5e8f\uff0c\u7136\u540e\u518d\u5bf9b\uff0cc\u8fdb\u884c\u6392\u5e8f\uff0c\u67e5\u8be2\u65f6\u5411\u4e0b\u627e\u8282\u70b9\u3002\u5373a a,b a,b,c\u80fd\u547d\u4e2d\u6240\u4ee5\uff0c\u5176\u4f59\u4e0d\u884c\u3002<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head18\">\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\u7684\u4f7f\u7528\u573a\u666f<\/h4><p>\u5171\u4eab\u9501 lock share mode \u53ea\u662f\u6392\u9664\u5176\u4ed6\u8fdb\u7a0b\u5bf9\u5bf9\u5e94\u6570\u636e\u8fdb\u884c\u5199\u64cd\u4f5c\uff0c\u800cfor update\u6392\u5b83\u9501\u5bf9\u4e8e\u5176\u4ed6\u8fdb\u7a0b\u5219\u4e0d\u53ef\u8bfb\u4e5f\u4e0d\u53ef\u5199<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head19\">\u5173\u7cfb\u578b\u6570\u636e\u5e93\u548c\u975e\u5173\u7cfb\u6570\u636e\u5e93\u7684\u4f18\u7f3a\u70b9<\/h4><p><a href=\"https:\/\/blog.csdn.net\/weixin_45847162\/article\/details\/107447744\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head20\">Mysql \u4ec0\u4e48\u60c5\u51b5\u4f1a\u9020\u6210\u6162\u67e5\uff0c\u5982\u4f55\u67e5\u770b\u6162\u67e5\u8be2<\/h4><p>\u4f7f\u7528explain\u67e5\u770b\u5177\u4f53sql\u662f\u5426\u6709\u547d\u4e2d\u7d22\u5f15\uff0c\u5176\u4e2dmysql\u7684\u5f00\u542f\u6162\u67e5\u8be2\u68c0\u6d4b\u65f6\uff0c\u53ef\u4ee5\u8bb0\u5f55\u6162\u67e5\u8be2\u7684sql<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head21\">\u5982\u4f55\u5904\u7406\u6162\u67e5\u8be2\uff0c\u4f60\u4e00\u822c\u662f\u600e\u4e48\u5904\u7406\u6162\u67e5\u8be2\u7684<\/h4><p>\u6839\u636e\u67e5\u8be2\u8bed\u53e5\uff0c\u5efa\u7acb\u7d22\u5f15<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head22\">Mysql \u4e2d\u63d2\u5165\u6570\u636e\u4f7f\u7528\u81ea\u589e id \u597d\u8fd8\u662f\u4f7f\u7528 uuid\uff0c\u4e3a\u4ec0\u4e48\uff1f<\/h4><p><a href=\"https:\/\/www.cnblogs.com\/barrywxx\/p\/7723122.html\">\u53c2\u8003\u9605\u8bfb<\/a><\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head23\">Mysql \u96c6\u7fa4\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f\uff0c\u5206\u522b\u9002\u7528\u4e8e\u4ec0\u4e48\u573a\u666f<\/h4><h4 class=\"my-blog-head\" id=\"my-blog-head24\">Mysql \u4e3b\u4ece\u6a21\u5f0f\u5982\u4f55\u4fdd\u8bc1\u4e3b\u4ece\u5f3a\u4e00\u81f4\u6027<\/h4><h4 class=\"my-blog-head\" id=\"my-blog-head25\">Mysql \u96c6\u7fa4\u5982\u4f55\u4fdd\u8bc1\u4e3b\u4ece\u53ef\u7528\u6027<\/h4><h4 class=\"my-blog-head\" id=\"my-blog-head26\">Mysql \u8bfb\u5199\u5206\u79bb\u6709\u54ea\u4e9b\u89e3\u51b3\u529e\u6cd5<\/h4>","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2020-12-08\/Wc48yGTdoCmeiySwMHljA.jpg","subMessage":"MySQL\u77e5\u8bc6\u5de9\u56fa\u7cfb\u5217","pageview":37,"isEncrypt":0,"tags":[{"aid":2,"id":"27UiMexpEH7f7YbJtAMG6i","name":"MySQL","createTime":"1575421523","updateTime":"1591339020","status":0,"articleCount":5,"pivot":{"articleId":"34FHlXU3MVxVzWXqbMLRro","tagId":"27UiMexpEH7f7YbJtAMG6i"}}],"category":{"aid":2,"id":"2anf9m21xzVI03kFomz1ta","name":"MySQL","createTime":"1575903925","updateTime":"1591339027","status":0,"articleCount":4,"canDel":1}},{"aid":5,"id":"38QywSlFv4d09JXKtAGzRy","title":"Mysql\u7d22\u5f15","categoryId":"2anf9m21xzVI03kFomz1ta","createTime":"1575904066","deleteTime":null,"updateTime":"1661103461","publishTime":1600008896,"deleteAt":null,"status":0,"content":"MySQL\u7d22\u5f15\n\n## \u573a\u666f\u5206\u6790\n### \u8ba2\u5355\u8868\n```\nCREATE TABLE test_innodb.torder (\n  `id` int(11) NOT NULL,\n  order_no varchar(100) NOT NULL,\n  order_status varchar(100) NOT NULL,\n  order_create_time DATETIME NOT NULL,\n  order_amount BIGINT NOT NULL\uff0c\n  PRIMARY KEY (`id`)\n)\nENGINE=InnoDB\nDEFAULT CHARSET=utf8mb4\nCOLLATE=utf8mb4_general_ci;\n```\n\u200b\n**\u67e5\u8be2\u9700\u6c42**\n- \u67e5\u8be2\u6700\u8fd1\uff0830\u5929\uff09\u5185\u67d0\u4e2a\u8ba2\u5355\u72b6\u6001\u7684\u6240\u6709\u8ba2\u5355\n- \u7edf\u8ba1\u5904\u4e8e\u67d0\u4e2a\u8ba2\u5355\u72b6\u6001\u7684\u6240\u6709\u8ba2\u5355\n- \u6839\u636e\u4ea4\u6613\u5355\u53f7\u67e5\u8be2\u8ba2\u5355\u7684\u72b6\u6001\n\u200b\n**\u7d22\u5f15\u5b9a\u4e49**\nKEY `order_status-order_no` (`order_status`, `order_no`),\nKEY `order_status-order_create_time` (`order_status`, `order_create_time`),\nUNIQUE KEY `order_no` (`order_no`) USING BTREE\n\u200b\n\u200b\n### \u5e02\u6c11\u8868\n```\nCREATE TABLE `tuser` (\n  `id` int(11) NOT NULL,\n  `id_card` varchar(32) DEFAULT NULL,\n  `name` varchar(32) DEFAULT NULL,\n  `age` int(11) DEFAULT NULL,\n  `ismale` tinyint(1) DEFAULT NULL,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB\n```\n\u200b\n**\u67e5\u8be2\u9700\u6c42**\n1. \u6839\u636e\u5e02\u6c11\u8eab\u4efd\u8bc1\u53f7\u67e5\u8be2\u6240\u6709\u4fe1\u606f\n2. \u6839\u636e\u5e02\u6c11\u7684\u8eab\u4efd\u8bc1\u53f7\u67e5\u8be2\u4ed6\u7684\u59d3\u540d\n\u200b\n**\u7d22\u5f15\u5b9a\u4e49**\nKEY `id_card` (`id_card`),\nKEY `name_age` (`name`,`age`)\n\u200b\n## \u4f18\u5316\u539f\u5219\uff1a\n### 1. \u6700\u5de6\u5339\u914d\u539f\u5219\n\u200b\n\u6700\u5de6\u5339\u914d\u539f\u5219\u7684\u542b\u4e49\u662f\uff0cMysql\u5339\u914d\u7d22\u5f15\u65f6\u6309\u7167\u8054\u5408\u7d22\u5f15\u7684\u6700\u5de6 N \u4e2a\u5b57\u6bb5\uff0c\u6216\u8005\u662f\u5b57\u7b26\u4e32\u7d22\u5f15\u7684\u6700\u5de6 M \u4e2a\u5b57\u7b26\u3002\n\u200b\n**\u5982\u679c\u80fd\u901a\u8fc7\u65b0\u589e\u8054\u5408\u7d22\u5f15\u3001\u8c03\u6574\u8054\u5408\u7d22\u5f15\u7684\u987a\u5e8f\u8fbe\u5230\u51cf\u5c11\u7d22\u5f15\u7684\u6548\u679c\uff0c\u90a3\u5c31\u53ef\u4ee5\u4f18\u5148\u8003\u8651\u8fd9\u4e2a\u987a\u5e8f\u3002**\n\u200b\n### 2. \u8986\u76d6\u7d22\u5f15\n\u200b\n\u8986\u76d6\u7d22\u5f15\u548c\u6838\u5fc3\u539f\u7406\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u907f\u514d\u67e5\u8be2\u8fc7\u7a0b\u4e2d\u518d\u53bb\u901a\u8fc7\u4e3b\u952e\u7d22\u5f15**\u641c\u7d22\u6811**\uff0c\u51cf\u5c11\u56de\u8868\u6b21\u6570\uff0c\u4e5f\u5c31\u662f**\u51cf\u5c11\u78c1\u76d8IO\u8bbf\u95ee**\u3002\n\u200b\n\u5982\u679c\u589e\u52a0\u8986\u76d6\u7d22\u5f15\u80fd\u5339\u914d\u5230**\u9ad8\u9891\u9700\u6c42**\uff0c\u53ef\u4ee5\u4f18\u5148\u8003\u8651\u5efa\u7acb\u8fd9\u4e2a\u7d22\u5f15\uff0c\u540c\u65f6\u8981\u6ce8\u610f\u7684\u662f\u7d22\u5f15\u589e\u52a0\u540e\u7b2c\u4e00\u4f1a\u589e\u5927**\u7a7a\u95f4**\u7684\u6d88\u8017\uff0c\u5176\u6b21\u4f1a\u964d\u4f4e**\u63d2\u5165\u6570\u636e**\u7684\u6027\u80fd\uff08\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u901a\u8fc7\u8bfb\u5199\u5206\u79bb\u53ef\u89e3\u51b3\uff09\uff0c\u4f46\u4e00\u822c\u4e1a\u52a1\u573a\u666f\u4e0b\u4e0a\u9762\u4e24\u70b9\u662f\u53ef\u4ee5\u5fcd\u53d7\u7684\u3002\n\u200b\n### 3. \u7d22\u5f15\u4e0b\u63a8\nMySQL 5.6 \u5f15\u5165\u7684\u7d22\u5f15\u4e0b\u63a8\u4f18\u5316\uff08index condition pushdown)\uff0c \u53ef\u4ee5\u5728\u7d22\u5f15\u904d\u5386\u8fc7\u7a0b\u4e2d\uff0c\u5bf9\u7d22\u5f15\u4e2d\u5305\u542b\u7684\u5b57\u6bb5\u5148\u505a\u5224\u65ad\uff0c\u76f4\u63a5\u8fc7\u6ee4\u6389\u4e0d\u6ee1\u8db3\u6761\u4ef6\u7684\u8bb0\u5f55\uff0c**\u51cf\u5c11\u56de\u8868\u6b21\u6570**\u3002\n\u200b\n\u8fd9\u4e2a\u4f18\u5316\u539f\u5219\u53ef\u4ee5\u7c7b\u6bd4\u8986\u76d6\u7d22\u5f15\u7684\u539f\u5219\u6765\u5224\u65ad\uff0c\u6839\u636e\u5177\u4f53SQL\u5206\u6790\u5177\u4f53\u4f18\u5316\u7684\u8868\u73b0\u3002\n \n==explain\u5173\u952e\u5b57\u5b57\u6bb5\u89e3\u6790==\nid:\u9009\u62e9\u6807\u8bc6\u7b26\nselect_type:\u8868\u793a\u67e5\u8be2\u7684\u7c7b\u578b\u3002\ntable:\u8f93\u51fa\u7ed3\u679c\u96c6\u7684\u8868\npartitions:\u5339\u914d\u7684\u5206\u533a\ntype:\u8868\u793a\u8868\u7684\u8fde\u63a5\u7c7b\u578b\npossible_keys:\u8868\u793a\u67e5\u8be2\u65f6\uff0c\u53ef\u80fd\u4f7f\u7528\u7684\u7d22\u5f15\nkey:\u8868\u793a\u5b9e\u9645\u4f7f\u7528\u7684\u7d22\u5f15\nkey_len:\u7d22\u5f15\u5b57\u6bb5\u7684\u957f\u5ea6\nref:\u5217\u4e0e\u7d22\u5f15\u7684\u6bd4\u8f83\nrows:\u626b\u63cf\u51fa\u7684\u884c\u6570(\u4f30\u7b97\u7684\u884c\u6570)\nfiltered:\u6309\u8868\u6761\u4ef6\u8fc7\u6ee4\u7684\u884c\u767e\u5206\u6bd4\nExtra:\u6267\u884c\u60c5\u51b5\u7684\u63cf\u8ff0\u548c\u8bf4\u660e\n\n\n## \u65e5\u5e38\u603b\u7ed3\n\nB+\u6811\u7d22\u5f15\u5728\u7a7a\u95f4\u548c\u65f6\u95f4\u4e0a\u90fd\u6709\u4ee3\u4ef7\uff0c\u6240\u4ee5\u6ca1\u4e8b\u513f\u522b\u778e\u5efa\u7d22\u5f15\u3002\n\nB+\u6811\u7d22\u5f15\u9002\u7528\u4e8e\u4e0b\u8fb9\u8fd9\u4e9b\u60c5\u51b5\uff1a\n\n\u5168\u503c\u5339\u914d\n\u5339\u914d\u5de6\u8fb9\u7684\u5217\n\u5339\u914d\u8303\u56f4\u503c\n\u7cbe\u786e\u5339\u914d\u67d0\u4e00\u5217\u5e76\u8303\u56f4\u5339\u914d\u53e6\u5916\u4e00\u5217\n\u7528\u4e8e\u6392\u5e8f\n\u7528\u4e8e\u5206\u7ec4\n\u5728\u4f7f\u7528\u7d22\u5f15\u65f6\u9700\u8981\u6ce8\u610f\u4e0b\u8fb9\u8fd9\u4e9b\u4e8b\u9879\uff1a\n\n\u53ea\u4e3a\u7528\u4e8e\u641c\u7d22\u3001\u6392\u5e8f\u6216\u5206\u7ec4\u7684\u5217\u521b\u5efa\u7d22\u5f15\n\u4e3a\u5217\u7684\u57fa\u6570\u5927\u7684\u5217\u521b\u5efa\u7d22\u5f15\n\u7d22\u5f15\u5217\u7684\u7c7b\u578b\u5c3d\u91cf\u5c0f\n\u53ef\u4ee5\u53ea\u5bf9\u5b57\u7b26\u4e32\u503c\u7684\u524d\u7f00\u5efa\u7acb\u7d22\u5f15\n\u53ea\u6709\u7d22\u5f15\u5217\u5728\u6bd4\u8f83\u8868\u8fbe\u5f0f\u4e2d\u5355\u72ec\u51fa\u73b0\u624d\u53ef\u4ee5\u9002\u7528\u7d22\u5f15\n\u4e3a\u4e86\u5c3d\u53ef\u80fd\u5c11\u7684\u8ba9\u805a\u7c07\u7d22\u5f15\u53d1\u751f\u9875\u9762\u5206\u88c2\u548c\u8bb0\u5f55\u79fb\u4f4d\u7684\u60c5\u51b5\uff0c\u5efa\u8bae\u8ba9\u4e3b\u952e\u62e5\u6709AUTO_INCREMENT\u5c5e\u6027\u3002\n\u5b9a\u4f4d\u5e76\u5220\u9664\u8868\u4e2d\u7684\u91cd\u590d\u548c\u5197\u4f59\u7d22\u5f15\n\u5c3d\u91cf\u4f7f\u7528\u8986\u76d6\u7d22\u5f15\u8fdb\u884c\u67e5\u8be2\uff0c\u907f\u514d\u56de\u8868\u5e26\u6765\u7684\u6027\u80fd\u635f\u8017\u3002","htmlContent":"<p>MySQL\u7d22\u5f15<\/p>\n<h2 class=\"my-blog-head\" id=\"my-blog-head8\">\u573a\u666f\u5206\u6790<\/h2><h3 class=\"my-blog-head\" id=\"my-blog-head9\">\u8ba2\u5355\u8868<\/h3><pre><code>CREATE TABLE test_innodb.torder (\n  `id` int(11) NOT NULL,\n  order_no varchar(100) NOT NULL,\n  order_status varchar(100) NOT NULL,\n  order_create_time DATETIME NOT NULL,\n  order_amount BIGINT NOT NULL\uff0c\n  PRIMARY KEY (`id`)\n)\nENGINE=InnoDB\nDEFAULT CHARSET=utf8mb4\nCOLLATE=utf8mb4_general_ci;<\/code><\/pre>\n<p>\u200b<br><strong>\u67e5\u8be2\u9700\u6c42<\/strong><\/p>\n<ul>\n<li>\u67e5\u8be2\u6700\u8fd1\uff0830\u5929\uff09\u5185\u67d0\u4e2a\u8ba2\u5355\u72b6\u6001\u7684\u6240\u6709\u8ba2\u5355<\/li>\n<li>\u7edf\u8ba1\u5904\u4e8e\u67d0\u4e2a\u8ba2\u5355\u72b6\u6001\u7684\u6240\u6709\u8ba2\u5355<\/li>\n<li>\u6839\u636e\u4ea4\u6613\u5355\u53f7\u67e5\u8be2\u8ba2\u5355\u7684\u72b6\u6001<br>\u200b<\/li>\n<\/ul>\n<p><strong>\u7d22\u5f15\u5b9a\u4e49<\/strong><br>KEY <code>order_status-order_no<\/code> (<code>order_status<\/code>, <code>order_no<\/code>),<br>KEY <code>order_status-order_create_time<\/code> (<code>order_status<\/code>, <code>order_create_time<\/code>),<br>UNIQUE KEY <code>order_no<\/code> (<code>order_no<\/code>) USING BTREE<br>\u200b<br>\u200b<\/p>\n<h3 class=\"my-blog-head\" id=\"my-blog-head10\">\u5e02\u6c11\u8868<\/h3><pre><code>CREATE TABLE `tuser` (\n  `id` int(11) NOT NULL,\n  `id_card` varchar(32) DEFAULT NULL,\n  `name` varchar(32) DEFAULT NULL,\n  `age` int(11) DEFAULT NULL,\n  `ismale` tinyint(1) DEFAULT NULL,\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB<\/code><\/pre>\n<p>\u200b<br><strong>\u67e5\u8be2\u9700\u6c42<\/strong><\/p>\n<ol>\n<li>\u6839\u636e\u5e02\u6c11\u8eab\u4efd\u8bc1\u53f7\u67e5\u8be2\u6240\u6709\u4fe1\u606f<\/li>\n<li>\u6839\u636e\u5e02\u6c11\u7684\u8eab\u4efd\u8bc1\u53f7\u67e5\u8be2\u4ed6\u7684\u59d3\u540d<br>\u200b<\/li>\n<\/ol>\n<p><strong>\u7d22\u5f15\u5b9a\u4e49<\/strong><br>KEY <code>id_card<\/code> (<code>id_card<\/code>),<br>KEY <code>name_age<\/code> (<code>name<\/code>,<code>age<\/code>)<br>\u200b<\/p>\n<h2 class=\"my-blog-head\" id=\"my-blog-head11\">\u4f18\u5316\u539f\u5219\uff1a<\/h2><h3 class=\"my-blog-head\" id=\"my-blog-head12\">1. \u6700\u5de6\u5339\u914d\u539f\u5219<\/h3><p>\u200b<br>\u6700\u5de6\u5339\u914d\u539f\u5219\u7684\u542b\u4e49\u662f\uff0cMysql\u5339\u914d\u7d22\u5f15\u65f6\u6309\u7167\u8054\u5408\u7d22\u5f15\u7684\u6700\u5de6 N \u4e2a\u5b57\u6bb5\uff0c\u6216\u8005\u662f\u5b57\u7b26\u4e32\u7d22\u5f15\u7684\u6700\u5de6 M \u4e2a\u5b57\u7b26\u3002<br>\u200b<br><strong>\u5982\u679c\u80fd\u901a\u8fc7\u65b0\u589e\u8054\u5408\u7d22\u5f15\u3001\u8c03\u6574\u8054\u5408\u7d22\u5f15\u7684\u987a\u5e8f\u8fbe\u5230\u51cf\u5c11\u7d22\u5f15\u7684\u6548\u679c\uff0c\u90a3\u5c31\u53ef\u4ee5\u4f18\u5148\u8003\u8651\u8fd9\u4e2a\u987a\u5e8f\u3002<\/strong><br>\u200b<\/p>\n<h3 class=\"my-blog-head\" id=\"my-blog-head13\">2. \u8986\u76d6\u7d22\u5f15<\/h3><p>\u200b<br>\u8986\u76d6\u7d22\u5f15\u548c\u6838\u5fc3\u539f\u7406\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u907f\u514d\u67e5\u8be2\u8fc7\u7a0b\u4e2d\u518d\u53bb\u901a\u8fc7\u4e3b\u952e\u7d22\u5f15<strong>\u641c\u7d22\u6811<\/strong>\uff0c\u51cf\u5c11\u56de\u8868\u6b21\u6570\uff0c\u4e5f\u5c31\u662f<strong>\u51cf\u5c11\u78c1\u76d8IO\u8bbf\u95ee<\/strong>\u3002<br>\u200b<br>\u5982\u679c\u589e\u52a0\u8986\u76d6\u7d22\u5f15\u80fd\u5339\u914d\u5230<strong>\u9ad8\u9891\u9700\u6c42<\/strong>\uff0c\u53ef\u4ee5\u4f18\u5148\u8003\u8651\u5efa\u7acb\u8fd9\u4e2a\u7d22\u5f15\uff0c\u540c\u65f6\u8981\u6ce8\u610f\u7684\u662f\u7d22\u5f15\u589e\u52a0\u540e\u7b2c\u4e00\u4f1a\u589e\u5927<strong>\u7a7a\u95f4<\/strong>\u7684\u6d88\u8017\uff0c\u5176\u6b21\u4f1a\u964d\u4f4e<strong>\u63d2\u5165\u6570\u636e<\/strong>\u7684\u6027\u80fd\uff08\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u901a\u8fc7\u8bfb\u5199\u5206\u79bb\u53ef\u89e3\u51b3\uff09\uff0c\u4f46\u4e00\u822c\u4e1a\u52a1\u573a\u666f\u4e0b\u4e0a\u9762\u4e24\u70b9\u662f\u53ef\u4ee5\u5fcd\u53d7\u7684\u3002<br>\u200b<\/p>\n<h3 class=\"my-blog-head\" id=\"my-blog-head14\">3. \u7d22\u5f15\u4e0b\u63a8<\/h3><p>MySQL 5.6 \u5f15\u5165\u7684\u7d22\u5f15\u4e0b\u63a8\u4f18\u5316\uff08index condition pushdown)\uff0c \u53ef\u4ee5\u5728\u7d22\u5f15\u904d\u5386\u8fc7\u7a0b\u4e2d\uff0c\u5bf9\u7d22\u5f15\u4e2d\u5305\u542b\u7684\u5b57\u6bb5\u5148\u505a\u5224\u65ad\uff0c\u76f4\u63a5\u8fc7\u6ee4\u6389\u4e0d\u6ee1\u8db3\u6761\u4ef6\u7684\u8bb0\u5f55\uff0c<strong>\u51cf\u5c11\u56de\u8868\u6b21\u6570<\/strong>\u3002<br>\u200b<br>\u8fd9\u4e2a\u4f18\u5316\u539f\u5219\u53ef\u4ee5\u7c7b\u6bd4\u8986\u76d6\u7d22\u5f15\u7684\u539f\u5219\u6765\u5224\u65ad\uff0c\u6839\u636e\u5177\u4f53SQL\u5206\u6790\u5177\u4f53\u4f18\u5316\u7684\u8868\u73b0\u3002<\/p>\n<p>==explain\u5173\u952e\u5b57\u5b57\u6bb5\u89e3\u6790==<br>id:\u9009\u62e9\u6807\u8bc6\u7b26<br>select_type:\u8868\u793a\u67e5\u8be2\u7684\u7c7b\u578b\u3002<br>table:\u8f93\u51fa\u7ed3\u679c\u96c6\u7684\u8868<br>partitions:\u5339\u914d\u7684\u5206\u533a<br>type:\u8868\u793a\u8868\u7684\u8fde\u63a5\u7c7b\u578b<br>possible_keys:\u8868\u793a\u67e5\u8be2\u65f6\uff0c\u53ef\u80fd\u4f7f\u7528\u7684\u7d22\u5f15<br>key:\u8868\u793a\u5b9e\u9645\u4f7f\u7528\u7684\u7d22\u5f15<br>key_len:\u7d22\u5f15\u5b57\u6bb5\u7684\u957f\u5ea6<br>ref:\u5217\u4e0e\u7d22\u5f15\u7684\u6bd4\u8f83<br>rows:\u626b\u63cf\u51fa\u7684\u884c\u6570(\u4f30\u7b97\u7684\u884c\u6570)<br>filtered:\u6309\u8868\u6761\u4ef6\u8fc7\u6ee4\u7684\u884c\u767e\u5206\u6bd4<br>Extra:\u6267\u884c\u60c5\u51b5\u7684\u63cf\u8ff0\u548c\u8bf4\u660e<\/p>\n<h2 class=\"my-blog-head\" id=\"my-blog-head15\">\u65e5\u5e38\u603b\u7ed3<\/h2><p>B+\u6811\u7d22\u5f15\u5728\u7a7a\u95f4\u548c\u65f6\u95f4\u4e0a\u90fd\u6709\u4ee3\u4ef7\uff0c\u6240\u4ee5\u6ca1\u4e8b\u513f\u522b\u778e\u5efa\u7d22\u5f15\u3002<\/p>\n<p>B+\u6811\u7d22\u5f15\u9002\u7528\u4e8e\u4e0b\u8fb9\u8fd9\u4e9b\u60c5\u51b5\uff1a<\/p>\n<p>\u5168\u503c\u5339\u914d<br>\u5339\u914d\u5de6\u8fb9\u7684\u5217<br>\u5339\u914d\u8303\u56f4\u503c<br>\u7cbe\u786e\u5339\u914d\u67d0\u4e00\u5217\u5e76\u8303\u56f4\u5339\u914d\u53e6\u5916\u4e00\u5217<br>\u7528\u4e8e\u6392\u5e8f<br>\u7528\u4e8e\u5206\u7ec4<br>\u5728\u4f7f\u7528\u7d22\u5f15\u65f6\u9700\u8981\u6ce8\u610f\u4e0b\u8fb9\u8fd9\u4e9b\u4e8b\u9879\uff1a<\/p>\n<p>\u53ea\u4e3a\u7528\u4e8e\u641c\u7d22\u3001\u6392\u5e8f\u6216\u5206\u7ec4\u7684\u5217\u521b\u5efa\u7d22\u5f15<br>\u4e3a\u5217\u7684\u57fa\u6570\u5927\u7684\u5217\u521b\u5efa\u7d22\u5f15<br>\u7d22\u5f15\u5217\u7684\u7c7b\u578b\u5c3d\u91cf\u5c0f<br>\u53ef\u4ee5\u53ea\u5bf9\u5b57\u7b26\u4e32\u503c\u7684\u524d\u7f00\u5efa\u7acb\u7d22\u5f15<br>\u53ea\u6709\u7d22\u5f15\u5217\u5728\u6bd4\u8f83\u8868\u8fbe\u5f0f\u4e2d\u5355\u72ec\u51fa\u73b0\u624d\u53ef\u4ee5\u9002\u7528\u7d22\u5f15<br>\u4e3a\u4e86\u5c3d\u53ef\u80fd\u5c11\u7684\u8ba9\u805a\u7c07\u7d22\u5f15\u53d1\u751f\u9875\u9762\u5206\u88c2\u548c\u8bb0\u5f55\u79fb\u4f4d\u7684\u60c5\u51b5\uff0c\u5efa\u8bae\u8ba9\u4e3b\u952e\u62e5\u6709AUTO_INCREMENT\u5c5e\u6027\u3002<br>\u5b9a\u4f4d\u5e76\u5220\u9664\u8868\u4e2d\u7684\u91cd\u590d\u548c\u5197\u4f59\u7d22\u5f15<br>\u5c3d\u91cf\u4f7f\u7528\u8986\u76d6\u7d22\u5f15\u8fdb\u884c\u67e5\u8be2\uff0c\u907f\u514d\u56de\u8868\u5e26\u6765\u7684\u6027\u80fd\u635f\u8017\u3002<\/p>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2020-09-13\/DACQQxa3270fVF5fYPuwY.jpg","subMessage":"Mysql\u7d22\u5f15","pageview":28,"isEncrypt":0,"tags":[{"aid":2,"id":"27UiMexpEH7f7YbJtAMG6i","name":"MySQL","createTime":"1575421523","updateTime":"1591339020","status":0,"articleCount":5,"pivot":{"articleId":"38QywSlFv4d09JXKtAGzRy","tagId":"27UiMexpEH7f7YbJtAMG6i"}}],"category":{"aid":2,"id":"2anf9m21xzVI03kFomz1ta","name":"MySQL","createTime":"1575903925","updateTime":"1591339027","status":0,"articleCount":4,"canDel":1}},{"aid":17,"id":"7GLwS8J2vosjbyaibfLkzE","title":"php\u53cd\u5c04\u4e0e\u4f9d\u8d56\u6ce8\u5165\u5b66\u4e60","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1585730728","deleteTime":null,"updateTime":"1688607664","publishTime":1598537849,"deleteAt":null,"status":0,"content":"```\n<?php\nclass Circle\n{\n    \/**\n     * @var int\n     *\/\n\tpublic $radius;\n\n    \/**\n     * @var Point\n     *\/\n\tpublic $center;\n\n    const PI = 3.14;\n\n\tpublic function __construct(Point $point, $radius = 1)\n\t{\n\t\t$this->center = $point;\n\t\t$this->radius = $radius;\n\t}\n\n\tpublic function printCenter()\n    {\n        printf('center coordinate is (%d, %d)', $this->center->x, $this->center->y);\n    }\n\n    public function area()\n    {\n        return 3.14 * pow($this->radius, 2);\n    }\n}\n\n\/**\n * Class Point\n *\/\nclass Point\n{\n    public $x;\n    public $y;\n\n    \/**\n     * Point constructor.\n     * @param int $x  horizontal value of point's coordinate\n     * @param int $y  vertical value of point's coordinate\n     *\/\n    public function __construct($x = 0, $y = 0)\n    {\n        $this->x = $x;\n        $this->y = $y;\n    }\n}\n\n\n$reflectionClass = new reflectionClass(Circle::class);\n\n\nfunction make($className)\n{\n    $reflectionClass = new ReflectionClass($className);\n    $constructor = $reflectionClass->getConstructor();\n    $parameters  = $constructor->getParameters();\n    $dependencies = getDependencies($parameters);\n\n    return $reflectionClass->newInstanceArgs($dependencies);\n}\n\nfunction getDependencies($parameters)\n{\n    $dependencies = [];\n    foreach($parameters as $parameter) {\n        $dependency = $parameter->getClass();\n        if (is_null($dependency)) {\n            if($parameter->isDefaultValueAvailable()) {\n                $dependencies[] = $parameter->getDefaultValue();\n            } else {\n                \/\/to easily implement this function, I just assume 0 to built-in type parameters\n                $dependencies[] = '0';\n            }\n        } else {\n            $dependencies[] = make($parameter->getClass()->name);\n        }\n    }\n\n    return $dependencies;\n}\n\n$circle = make('Circle');\n$area = $circle->area();\n```\n\u6587\u7ae0\u53c2\u8003\uff0claravel\u793e\u533a\u7684[\u5185\u6838\u5206\u6790](\u5185\u6838\u5206\u6790)\u6587\u7ae0\n","htmlContent":"<pre><code>&lt;?php\nclass Circle\n{\n    \/**\n     * @var int\n     *\/\n    public $radius;\n\n    \/**\n     * @var Point\n     *\/\n    public $center;\n\n    const PI = 3.14;\n\n    public function __construct(Point $point, $radius = 1)\n    {\n        $this-&gt;center = $point;\n        $this-&gt;radius = $radius;\n    }\n\n    public function printCenter()\n    {\n        printf(&#39;center coordinate is (%d, %d)&#39;, $this-&gt;center-&gt;x, $this-&gt;center-&gt;y);\n    }\n\n    public function area()\n    {\n        return 3.14 * pow($this-&gt;radius, 2);\n    }\n}\n\n\/**\n * Class Point\n *\/\nclass Point\n{\n    public $x;\n    public $y;\n\n    \/**\n     * Point constructor.\n     * @param int $x  horizontal value of point&#39;s coordinate\n     * @param int $y  vertical value of point&#39;s coordinate\n     *\/\n    public function __construct($x = 0, $y = 0)\n    {\n        $this-&gt;x = $x;\n        $this-&gt;y = $y;\n    }\n}\n\n\n$reflectionClass = new reflectionClass(Circle::class);\n\n\nfunction make($className)\n{\n    $reflectionClass = new ReflectionClass($className);\n    $constructor = $reflectionClass-&gt;getConstructor();\n    $parameters  = $constructor-&gt;getParameters();\n    $dependencies = getDependencies($parameters);\n\n    return $reflectionClass-&gt;newInstanceArgs($dependencies);\n}\n\nfunction getDependencies($parameters)\n{\n    $dependencies = [];\n    foreach($parameters as $parameter) {\n        $dependency = $parameter-&gt;getClass();\n        if (is_null($dependency)) {\n            if($parameter-&gt;isDefaultValueAvailable()) {\n                $dependencies[] = $parameter-&gt;getDefaultValue();\n            } else {\n                \/\/to easily implement this function, I just assume 0 to built-in type parameters\n                $dependencies[] = &#39;0&#39;;\n            }\n        } else {\n            $dependencies[] = make($parameter-&gt;getClass()-&gt;name);\n        }\n    }\n\n    return $dependencies;\n}\n\n$circle = make(&#39;Circle&#39;);\n$area = $circle-&gt;area();<\/code><\/pre><p>\u6587\u7ae0\u53c2\u8003\uff0claravel\u793e\u533a\u7684<a href=\"%E5%86%85%E6%A0%B8%E5%88%86%E6%9E%90\">\u5185\u6838\u5206\u6790<\/a>\u6587\u7ae0<\/p>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2020-08-29\/5YeLEMDJTu5puxjekbdEjy.jpg","subMessage":"\u5173\u4e8ephp\u53cd\u5c04\u4e0e\u4f9d\u8d56\u6ce8\u5165\u5b66\u4e60\uff0c\u5b66\u4e60\u4f9d\u8d56\u4e8elaravel\u793e\u533a\u7684\u5185\u6838\u5206\u6790\u6587\u7ae0\u3002","pageview":7159,"isEncrypt":0,"tags":[{"aid":1,"id":"5ISRwlCPpOhRGNRKkC0Ni","name":"php","createTime":"1575383737","updateTime":"1577439347","status":0,"articleCount":5,"pivot":{"articleId":"7GLwS8J2vosjbyaibfLkzE","tagId":"5ISRwlCPpOhRGNRKkC0Ni"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}},{"aid":34,"id":"3bBRMkgNlcR9Uq6tV8uVG2","title":"docker hyperf\u642d\u5efa\u9047\u5230\u7684\u95ee\u9898","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1597766239","deleteTime":null,"updateTime":"1661103480","publishTime":1597766239,"deleteAt":null,"status":0,"content":"## \u5f00\u8352docker\u4e0ehyperf\n\n\u5e38\u7528\u7684docker\u547d\u4ee4\u5728\u4efb\u4f55\u5730\u65b9\u90fd\u53ef\u4ee5\u8fdb\u884c\u67e5\u9605\uff0c\u6240\u4ee5\u672c\u6587\u5c31\u4e0d\u590d\u8d34\u90a3\u4e9b\u547d\u4ee4\u4e86\uff0c\u4e3b\u8981\u4f1a\u9488\u5bf9hyperf\u6587\u6863\u91cc\u9762docker\u5b89\u88c5\u8e29\u8fc7\u70b9\u5751\uff0c\u8ddf\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u3002\n\n### dockerfile\n\u5b98\u65b9\u6587\u6863\u4e2d\u63d0\u4f9b\u4e86[hyperf\u5b98\u65b9dockerfile](https:\/\/hyperf.wiki\/2.0\/#\/zh-cn\/quick-start\/install?id=docker-%e4%b8%8b%e5%bc%80%e5%8f%91)\u3002\u4f46\u662f\u5176\u4e2d\u6709composer.phar\u4e0b\u8f7d\u7279\u522b\u7684\u6162\uff0c\u5c24\u5176\u662f\u5728\u56fd\u5185\u7684\u4e0d\u52a0FQ\u7684\u60c5\u51b5\u4e0b\uff0c\u4e2a\u4eba\u5c1d\u8bd5\u4e86\u5f88\u591a\u6b21\u90fd\u662f\u955c\u50cf\u62c9\u53bb\u5931\u8d25\uff0c\u800c\u4e14\u8fd8\u628adocker\u955c\u50cf\u6e90\u5207\u6362\u4e3a\u56fd\u5185\u7684\u60c5\u51b5\u4e0b\u3002\n\u540e\u6765\u68c0\u67e5\u4e86dockerfile\u53d1\u73b0\uff0c\u5176\u4e2dcomposer.phar\u662f\u62c9\u53bbgithub\u7684\u8d44\u6e90\uff0c\u4e2a\u4eba\u5728\u817e\u8baf\u4e91\u670d\u52a1\u5668\u4e0a\u9762\u7684\u4f53\u9a8c\u662f\u6781\u5176\u5dee\u7684\uff0c\u6240\u4ee5\u6700\u540e\u4fee\u8c03\u4e4b\u540e\u7684dockerfile\u5982\u4e0b\uff1a\n```language\n# Default Dockerfile\n#\n# @link     https:\/\/www.hyperf.io\n# @document https:\/\/doc.hyperf.io\n# @contact  group@hyperf.io\n# @license  https:\/\/github.com\/hyperf-cloud\/hyperf\/blob\/master\/LICENSE\n\nFROM hyperf\/hyperf:7.2-alpine-v3.9-cli\nLABEL maintainer=\"Hyperf Developers <group@hyperf.io>\" version=\"1.0\" license=\"MIT\" app.name=\"Hyperf\"\n\n##\n# ---------- env settings ----------\n##\n# --build-arg timezone=Asia\/Shanghai\nARG timezone\n\nENV TIMEZONE=${timezone:-\"Asia\/Shanghai\"} \\\n    COMPOSER_VERSION=1.9.1 \\\n    APP_ENV=prod \\\n    SCAN_CACHEABLE=(true)\n\n# update\nRUN set -ex \\\n    && apk update \\\n    # install composer\n    && cd \/tmp \\\n    #&& wget https:\/\/github.com\/composer\/composer\/releases\/download\/${COMPOSER_VERSION}\/composer.phar \\\n    && wget https:\/\/mirrors.aliyun.com\/composer\/composer.phar \\\n    && chmod u+x composer.phar \\\n    && mv composer.phar \/usr\/local\/bin\/composer \\\n    && composer config -g repo.packagist composer https:\/\/mirrors.aliyun.com\/composer \\\n    # show php version and extensions\n    && php -v \\\n    && php -m \\\n    && php --ri swoole \\\n    #  ---------- some config ----------\n    && cd \/etc\/php7 \\\n    # - config PHP\n    && { \\\n        echo \"upload_max_filesize=100M\"; \\\n        echo \"post_max_size=108M\"; \\\n        echo \"memory_limit=1024M\"; \\\n        echo \"date.timezone=${TIMEZONE}\"; \\\n    } | tee conf.d\/99_overrides.ini \\\n    # - config timezone\n    && ln -sf \/usr\/share\/zoneinfo\/${TIMEZONE} \/etc\/localtime \\\n    && echo \"${TIMEZONE}\" > \/etc\/timezone \\\n    # ---------- clear works ----------\n    && rm -rf \/var\/cache\/apk\/* \/tmp\/* \/usr\/share\/man \\\n    && echo -e \"\\033[42;37m Build Completed :).\\033[0m\\n\"\n\nWORKDIR \/opt\/www\n\n# Composer Cache\n# COPY .\/composer.* \/opt\/www\/\n# RUN composer install --no-dev --no-scripts\n\nCOPY . \/opt\/www\nRUN composer install --no-dev -o && php bin\/hyperf.php\n\nEXPOSE 9501\n\nENTRYPOINT [\"php\", \"\/opt\/www\/bin\/hyperf.php\", \"start\"]\n\n```\n\u4e3b\u8981\u4fee\u6539\u4e86\u4e00\u4e0b\u51e0\u70b9\uff1a\n- wget https:\/\/mirrors.aliyun.com\/composer\/composer.phar  #\u4ece\u56fd\u5185\u963f\u91cc\u4e91\u8fdb\u884c\u62c9\u53bbcomposer.phar\n- composer config -g repo.packagist composer https:\/\/mirrors.aliyun.com\/composer  #\u66f4\u6539composer\u955c\u50cf\u6e90\u4e3a\u56fd\u5185\u955c\u50cf\u6e90\n\n### \u76ee\u5f55\u6302\u8f7d\n\u4e3a\u4e86\u65b9\u4fbf\u5f00\u53d1\uff0c\u505a\u4e86\u76ee\u5f55\u6302\u8f7d\u4e0e\u4ee3\u7801[\u70ed\u91cd\u542f](https:\/\/hyperf.wiki\/2.0\/#\/zh-cn\/watcher)\u3002\n- \u9879\u76ee\u4ee3\u7801\u76ee\u5f55\u6302\u8f7d\uff0cdocker run -v \u5bbf\u4e3b\u8def\u5f84:\u955c\u50cf\u8def\u5f84\n- \u4ee5php bin\/hyperf.php server:watch \u65b9\u5f0f\u5f00\u542f\u9879\u76ee\uff0c\u542f\u7528\u70ed\u66f4\u65b0\n\n### \u5173\u4e8e\u5bbf\u4e3b\u673a\u4e0edocker\u5bb9\u5668\u4e4b\u95f4mysql\u4e0eredis\u8fde\u63a5\u95ee\u9898\n\u5982\u679c\u8fde\u63a5\u662f\u8d70\u516c\u7f51ip\u7684\u8bdd\uff0c\u90a3\u5c31\u4ee5\u6b63\u5e38\u7684\u65b9\u5f0f\u8fdb\u884c\u914d\u7f6e\u5c31\u884c\u3002\u4e2a\u4eba\u521a\u597ddocker\u5bb9\u5668\u6240\u5728\u7684\u5bbf\u4e3b\u673a\u4e0eredis\u670d\u52a1\u8ddfmysql\u670d\u52a1\u90fd\u5728\u4e00\u4e2a\u4e91\u670d\u52a1\u5668\u4e0a\uff0c\u6545\u60f3\u7740\u8d70\u672c\u5730\u8fde\u63a5\u8fdb\u884c\u8fde\u63a5\u3002\u4e00\u5f00\u59cb\u4e00\u76f4\u8d70127.0.0.1,\u4e00\u76f4\u8fde\u63a5\u4e0d\u6210\u529f\u3002\u540e\u53f0\uff0c\u901a\u8fc7\u5728\u5bb9\u5668\u4e0e\u5bbf\u4e3b\u6267\u884c==ifconfig==\u624d\u53d1\u73b0\u3002\u4e00\u4e2a\u662f127.17.0.1 \uff0cdocker\u5b9e\u4f8b\u4e0a\u4e3a 127.17.0.2\u3002\uff08\u5177\u4f53\u5f97\u8865\u4e00\u4e0b\u7f51\u7edc\u77e5\u8bc6\u8fd9\u5757\u57fa\u7840\uff09\uff0c\u901a\u8fc7\u8c03\u6574\u4e4b\u540e\uff0c\u624d\u5b8c\u6210\u4e86\u914d\u7f6e\u4fe1\u606f\u7684\u8fde\u63a5\u3002\u6574\u7406\u4e86\u51e0\u4e2a\u70b9\n- redis.conf \u6587\u4ef6\uff0c\u5176\u4e2dbind 127.0.0.1 \u8bb0\u5f97\u7528 # \u8fdb\u884c\u6ce8\u91ca\uff0c\u5f00\u653e\u5916\u7f51\u8fde\u63a5\n- redis.conf \u6587\u4ef6\uff0c\u5173\u95ed protected-mode\n- mysql\u4f7f\u7528\u7684\u8fde\u63a5\u8d26\u6237\u4fe1\u606f\uff0c\u9700\u8981\u5f00\u542f\u5916\u7f51\u8fde\u63a5\u6743\u9650\n\n\u57fa\u672c\u641e\u5b8c\u8fd9\u4e9b\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u5feb\u4e50\u73a9\u800d\u4e86\u3002\u3002\u3002","htmlContent":"<h2 class=\"my-blog-head\" id=\"my-blog-head6\">\u5f00\u8352docker\u4e0ehyperf<\/h2><p>\u5e38\u7528\u7684docker\u547d\u4ee4\u5728\u4efb\u4f55\u5730\u65b9\u90fd\u53ef\u4ee5\u8fdb\u884c\u67e5\u9605\uff0c\u6240\u4ee5\u672c\u6587\u5c31\u4e0d\u590d\u8d34\u90a3\u4e9b\u547d\u4ee4\u4e86\uff0c\u4e3b\u8981\u4f1a\u9488\u5bf9hyperf\u6587\u6863\u91cc\u9762docker\u5b89\u88c5\u8e29\u8fc7\u70b9\u5751\uff0c\u8ddf\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u3002<\/p>\n<h3 class=\"my-blog-head\" id=\"my-blog-head7\">dockerfile<\/h3><p>\u5b98\u65b9\u6587\u6863\u4e2d\u63d0\u4f9b\u4e86<a href=\"https:\/\/hyperf.wiki\/2.0\/#\/zh-cn\/quick-start\/install?id=docker-%e4%b8%8b%e5%bc%80%e5%8f%91\">hyperf\u5b98\u65b9dockerfile<\/a>\u3002\u4f46\u662f\u5176\u4e2d\u6709composer.phar\u4e0b\u8f7d\u7279\u522b\u7684\u6162\uff0c\u5c24\u5176\u662f\u5728\u56fd\u5185\u7684\u4e0d\u52a0FQ\u7684\u60c5\u51b5\u4e0b\uff0c\u4e2a\u4eba\u5c1d\u8bd5\u4e86\u5f88\u591a\u6b21\u90fd\u662f\u955c\u50cf\u62c9\u53bb\u5931\u8d25\uff0c\u800c\u4e14\u8fd8\u628adocker\u955c\u50cf\u6e90\u5207\u6362\u4e3a\u56fd\u5185\u7684\u60c5\u51b5\u4e0b\u3002<br>\u540e\u6765\u68c0\u67e5\u4e86dockerfile\u53d1\u73b0\uff0c\u5176\u4e2dcomposer.phar\u662f\u62c9\u53bbgithub\u7684\u8d44\u6e90\uff0c\u4e2a\u4eba\u5728\u817e\u8baf\u4e91\u670d\u52a1\u5668\u4e0a\u9762\u7684\u4f53\u9a8c\u662f\u6781\u5176\u5dee\u7684\uff0c\u6240\u4ee5\u6700\u540e\u4fee\u8c03\u4e4b\u540e\u7684dockerfile\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-language\"># Default Dockerfile\n#\n# @link     https:\/\/www.hyperf.io\n# @document https:\/\/doc.hyperf.io\n# @contact  group@hyperf.io\n# @license  https:\/\/github.com\/hyperf-cloud\/hyperf\/blob\/master\/LICENSE\n\nFROM hyperf\/hyperf:7.2-alpine-v3.9-cli\nLABEL maintainer=&quot;Hyperf Developers &lt;group@hyperf.io&gt;&quot; version=&quot;1.0&quot; license=&quot;MIT&quot; app.name=&quot;Hyperf&quot;\n\n##\n# ---------- env settings ----------\n##\n# --build-arg timezone=Asia\/Shanghai\nARG timezone\n\nENV TIMEZONE=${timezone:-&quot;Asia\/Shanghai&quot;} \\\n    COMPOSER_VERSION=1.9.1 \\\n    APP_ENV=prod \\\n    SCAN_CACHEABLE=(true)\n\n# update\nRUN set -ex \\\n    &amp;&amp; apk update \\\n    # install composer\n    &amp;&amp; cd \/tmp \\\n    #&amp;&amp; wget https:\/\/github.com\/composer\/composer\/releases\/download\/${COMPOSER_VERSION}\/composer.phar \\\n    &amp;&amp; wget https:\/\/mirrors.aliyun.com\/composer\/composer.phar \\\n    &amp;&amp; chmod u+x composer.phar \\\n    &amp;&amp; mv composer.phar \/usr\/local\/bin\/composer \\\n    &amp;&amp; composer config -g repo.packagist composer https:\/\/mirrors.aliyun.com\/composer \\\n    # show php version and extensions\n    &amp;&amp; php -v \\\n    &amp;&amp; php -m \\\n    &amp;&amp; php --ri swoole \\\n    #  ---------- some config ----------\n    &amp;&amp; cd \/etc\/php7 \\\n    # - config PHP\n    &amp;&amp; { \\\n        echo &quot;upload_max_filesize=100M&quot;; \\\n        echo &quot;post_max_size=108M&quot;; \\\n        echo &quot;memory_limit=1024M&quot;; \\\n        echo &quot;date.timezone=${TIMEZONE}&quot;; \\\n    } | tee conf.d\/99_overrides.ini \\\n    # - config timezone\n    &amp;&amp; ln -sf \/usr\/share\/zoneinfo\/${TIMEZONE} \/etc\/localtime \\\n    &amp;&amp; echo &quot;${TIMEZONE}&quot; &gt; \/etc\/timezone \\\n    # ---------- clear works ----------\n    &amp;&amp; rm -rf \/var\/cache\/apk\/* \/tmp\/* \/usr\/share\/man \\\n    &amp;&amp; echo -e &quot;\\033[42;37m Build Completed :).\\033[0m\\n&quot;\n\nWORKDIR \/opt\/www\n\n# Composer Cache\n# COPY .\/composer.* \/opt\/www\/\n# RUN composer install --no-dev --no-scripts\n\nCOPY . \/opt\/www\nRUN composer install --no-dev -o &amp;&amp; php bin\/hyperf.php\n\nEXPOSE 9501\n\nENTRYPOINT [&quot;php&quot;, &quot;\/opt\/www\/bin\/hyperf.php&quot;, &quot;start&quot;]\n<\/code><\/pre>\n<p>\u4e3b\u8981\u4fee\u6539\u4e86\u4e00\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>wget <a href=\"https:\/\/mirrors.aliyun.com\/composer\/composer.phar\">https:\/\/mirrors.aliyun.com\/composer\/composer.phar<\/a>  #\u4ece\u56fd\u5185\u963f\u91cc\u4e91\u8fdb\u884c\u62c9\u53bbcomposer.phar<\/li>\n<li>composer config -g repo.packagist composer <a href=\"https:\/\/mirrors.aliyun.com\/composer\">https:\/\/mirrors.aliyun.com\/composer<\/a>  #\u66f4\u6539composer\u955c\u50cf\u6e90\u4e3a\u56fd\u5185\u955c\u50cf\u6e90<\/li>\n<\/ul>\n<h3 class=\"my-blog-head\" id=\"my-blog-head8\">\u76ee\u5f55\u6302\u8f7d<\/h3><p>\u4e3a\u4e86\u65b9\u4fbf\u5f00\u53d1\uff0c\u505a\u4e86\u76ee\u5f55\u6302\u8f7d\u4e0e\u4ee3\u7801<a href=\"https:\/\/hyperf.wiki\/2.0\/#\/zh-cn\/watcher\">\u70ed\u91cd\u542f<\/a>\u3002<\/p>\n<ul>\n<li>\u9879\u76ee\u4ee3\u7801\u76ee\u5f55\u6302\u8f7d\uff0cdocker run -v \u5bbf\u4e3b\u8def\u5f84:\u955c\u50cf\u8def\u5f84<\/li>\n<li>\u4ee5php bin\/hyperf.php server:watch \u65b9\u5f0f\u5f00\u542f\u9879\u76ee\uff0c\u542f\u7528\u70ed\u66f4\u65b0<\/li>\n<\/ul>\n<h3 class=\"my-blog-head\" id=\"my-blog-head9\">\u5173\u4e8e\u5bbf\u4e3b\u673a\u4e0edocker\u5bb9\u5668\u4e4b\u95f4mysql\u4e0eredis\u8fde\u63a5\u95ee\u9898<\/h3><p>\u5982\u679c\u8fde\u63a5\u662f\u8d70\u516c\u7f51ip\u7684\u8bdd\uff0c\u90a3\u5c31\u4ee5\u6b63\u5e38\u7684\u65b9\u5f0f\u8fdb\u884c\u914d\u7f6e\u5c31\u884c\u3002\u4e2a\u4eba\u521a\u597ddocker\u5bb9\u5668\u6240\u5728\u7684\u5bbf\u4e3b\u673a\u4e0eredis\u670d\u52a1\u8ddfmysql\u670d\u52a1\u90fd\u5728\u4e00\u4e2a\u4e91\u670d\u52a1\u5668\u4e0a\uff0c\u6545\u60f3\u7740\u8d70\u672c\u5730\u8fde\u63a5\u8fdb\u884c\u8fde\u63a5\u3002\u4e00\u5f00\u59cb\u4e00\u76f4\u8d70127.0.0.1,\u4e00\u76f4\u8fde\u63a5\u4e0d\u6210\u529f\u3002\u540e\u53f0\uff0c\u901a\u8fc7\u5728\u5bb9\u5668\u4e0e\u5bbf\u4e3b\u6267\u884c==ifconfig==\u624d\u53d1\u73b0\u3002\u4e00\u4e2a\u662f127.17.0.1 \uff0cdocker\u5b9e\u4f8b\u4e0a\u4e3a 127.17.0.2\u3002\uff08\u5177\u4f53\u5f97\u8865\u4e00\u4e0b\u7f51\u7edc\u77e5\u8bc6\u8fd9\u5757\u57fa\u7840\uff09\uff0c\u901a\u8fc7\u8c03\u6574\u4e4b\u540e\uff0c\u624d\u5b8c\u6210\u4e86\u914d\u7f6e\u4fe1\u606f\u7684\u8fde\u63a5\u3002\u6574\u7406\u4e86\u51e0\u4e2a\u70b9<\/p>\n<ul>\n<li>redis.conf \u6587\u4ef6\uff0c\u5176\u4e2dbind 127.0.0.1 \u8bb0\u5f97\u7528 # \u8fdb\u884c\u6ce8\u91ca\uff0c\u5f00\u653e\u5916\u7f51\u8fde\u63a5<\/li>\n<li>redis.conf \u6587\u4ef6\uff0c\u5173\u95ed protected-mode<\/li>\n<li>mysql\u4f7f\u7528\u7684\u8fde\u63a5\u8d26\u6237\u4fe1\u606f\uff0c\u9700\u8981\u5f00\u542f\u5916\u7f51\u8fde\u63a5\u6743\u9650<\/li>\n<\/ul>\n<p>\u57fa\u672c\u641e\u5b8c\u8fd9\u4e9b\uff0c\u5c31\u53ef\u4ee5\u5f00\u59cb\u5feb\u4e50\u73a9\u800d\u4e86\u3002\u3002\u3002<\/p>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2020-09-07\/3U7st1tbtnkVYq3peOHJ6A.png","subMessage":"\u4f7f\u7528docker\u642d\u5efahyperf\u9879\u76ee","pageview":175,"isEncrypt":0,"tags":[{"aid":1,"id":"5ISRwlCPpOhRGNRKkC0Ni","name":"php","createTime":"1575383737","updateTime":"1577439347","status":0,"articleCount":5,"pivot":{"articleId":"3bBRMkgNlcR9Uq6tV8uVG2","tagId":"5ISRwlCPpOhRGNRKkC0Ni"}},{"aid":10,"id":"3CCNTsyXb36WZcXlTtAoq4","name":"docker","createTime":"1598069097","updateTime":"1598069097","status":0,"articleCount":0,"pivot":{"articleId":"3bBRMkgNlcR9Uq6tV8uVG2","tagId":"3CCNTsyXb36WZcXlTtAoq4"}},{"aid":11,"id":"54FGm9J3QapIgOVVDDtwYy","name":"dockerFile","createTime":"1598069097","updateTime":"1598069097","status":0,"articleCount":0,"pivot":{"articleId":"3bBRMkgNlcR9Uq6tV8uVG2","tagId":"54FGm9J3QapIgOVVDDtwYy"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}},{"aid":28,"id":"2WgwyDcXdIb4O5gTKrwImW","title":"\u8bb0\u5f55\u4e00\u6b21\u4e8b\u52a1\u5f02\u5e38","categoryId":"2anf9m21xzVI03kFomz1ta","createTime":"1596432828","deleteTime":null,"updateTime":"1661103484","publishTime":1596432828,"deleteAt":null,"status":0,"content":"> \u573a\u666f\uff1a\u540c\u4e8b\u5728\u5904\u7406\u4e0b\u5355\u6d41\u7a0b\u7684\u65f6\u5019\uff0c\u7a81\u7136\u53d1\u73b0\u8bf7\u6c42\u63a5\u53e3\u6ca1\u6709\u53cd\u5e94\uff0c\u4e00\u76f4\u5904\u4e8e\u963b\u585e\u72b6\u6001\u3002\n\n1. \u5728\u68c0\u67e5\u5177\u4f53\u7684\u4e1a\u52a1\u4ee3\u7801\u4e4b\u540e\uff0c\u53d1\u73b0\u5e76\u6ca1\u6709\u660e\u663e\u7684\u9519\u8bef\u3002\n2. \u601d\u6765\u60f3\u53bb\uff0c\u518d\u6b21\u628a\u76ee\u5149\u6295\u5411\u4e86MySQL\u4e0a\u9762\u3002\u7b2c\u4e00\u6b65\uff0c\u5148\u68c0\u67e5\u4e86\u4e00\u4e0b\u662f\u5426\u6709\u4e00\u76f4\u6267\u884c\u4e2d\u7684\u4e8b\u52a1\u3002\n3. \u8d77\u521d\u6000\u7591\uff0c\u5d4c\u5957\u4e8b\u52a1\u7684\u5199\u6cd5\u7684saveapoint\u4f1a\u4e0d\u4f1a\u5bf9\u4e8b\u52a1\u7684\u6267\u884c\u9020\u6210\u5f71\u54cd\uff0c\u540e\u9762\u8c03\u6574\u4e4b\u540e\u53d1\u73b0\u4e5f\u8fd8\u662f\u4e00\u6837\u3002\n4. \u60b2\u89c2\u9501\uff08\u6ca1\u6709\uff09\n5. \u66f4\u65b0\u8bed\u53e5\u4e5f\u4ee5\u4e3b\u952e\u4f5c\u4e3a\u66f4\u65b0\u6761\u4ef6\uff0c\u5bf9\u5f53\u884c\u5e93\u5b58\u6570\u636e\u4fee\u6539\u65f6\uff0c\u9501\u7684\u9897\u7c92\u5e94\u8be5\u662f\u884c\u9501\u7ea7\u522b\uff08\u4e2a\u4eba\u89c1\u89e3\uff0c\u4e0d\u5bf9\u7684\u8bdd\u5e0c\u671b\u6307\u5bfc\uff09\n\n\u5f53\u4e0b\u5355\u63a5\u53e3\u8bf7\u6c42\u65f6\uff0c\u66f4\u65b0\u5e93\u5b58\u7684sql\u8bed\u53e5\u51fa\u73b0\u4e86lock_wait\u7684\u72b6\u6001\u3002\n\n``` MySQL\nSELECT * from information_schema.INNODB_TRX;\nshow processlist;\n```\n![image.png](http:\/\/laravel.lubiao9.cn\/storage\/2020_08_03\/c37c985a0dfc83b801ed5b626ae3184b7145.png)\n\n\n\u8be1\u5f02\u7684\u4e00\u70b9\uff0c\u5728\u5bf9\u5e94\u4e00\u76f4\u5728running\u7684\u4e8b\u52a1\uff0c\u53d1\u73b0\u4e86trx_query\u662f\u4e3a\u7a7a\u7684\uff0c\uff08\u7ecf\u4eba\u6307\u70b9\u4e4b\u540e\uff0c\u8bf4\u8fd9\u662f\u4e8b\u52a1\u6ca1\u6709\u63d0\u4ea4\u4e5f\u6ca1\u6709\u56de\u6eda\u65f6\u51fa\u73b0\u7684\u72b6\u6001\uff09\u3002\u5728 kill \u5bf9\u5e94\u7684trx_mysql_thread_id \u4e4b\u540e\uff0c\u8ba9\u6d4b\u8bd5\u5e76\u53d1\u7684\u8bf7\u6c42\u8be5\u63a5\u53e3\uff0c\u4e5f\u6ca1\u6709\u51fa\u73b0\u4e8b\u52a1\u5361\u6b7b\u7684\u60c5\u51b5\u3002\u4f46\u662f\uff0c==\u603b\u4f1a\u9694\u4e00\u6bb5\u65f6\u95f4\u5c31\u51fa\u73b0==\uff0c\u771f\u662f\u70e6\u4eba\u7684\u5c0f\u5996\u7cbe\u3002\n\u4f46\u540e\u9762\u7684\u6211\u7ec6\u5fc3\u5730\u53d1\u73b0\uff0c\u6bcf\u6b21\u51fa\u73b0\u8fd9\u4e2a\u72b6\u51b5\u65f6\uff0c\u4f46\u662f\u4ee5\u6574\u70b9\u4e3a\u4e00\u4e2a\u5355\u4f4d\u5730\u51fa\u73b0\uff0c\u6709\u65f6\u5019\u662f19:30:05 \u6216\u8005\u662f15:00:03\u3002\n\u7a81\u7136\u6211\u5c31\u95ee\u4e86\u540c\u4e8b\u4e00\u53e5\uff0c\u4f60\u662f\u4e0d\u662fcrontab\u5728\u8dd1\u4ec0\u4e48\u5b9a\u65f6\u811a\u672c\u4e5f\u5728\u4e1a\u52a1\u4e0a\u9762\u56de\u6eda\u5e93\u5b58\u3002\u4ed6\u7a81\u7136\u8bf4\u597d\u50cf\u6709\u4e00\u4e2a\u7684\u5b9a\u65f6\u4efb\u52a1\uff0c\u626b\u63cf\u524d\u5929\u8ba2\u5355\uff0c\u8fdb\u884c\u5e93\u5b58\u4fee\u6b63\u3002\n\u68c0\u67e5\u4e86\u4ee3\u7801\u4e4b\u540e\uff0c\u53d1\u73b0\u8fd9\u73a9\u610f\uff0c\u7684\u786e\u662f\u76f4\u63a5\u66b4\u529b\u626b\u63cf\u6628\u65e5\u7684\u672a\u652f\u4ed8\u8ba2\u5355\uff0c\u7136\u540e\u9010\u6761\u66f4\u65b0\u5e93\u5b58\u4fe1\u606f\uff0c\u540c\u65f6\u6279\u91cf\u4fee\u6539\u8ba2\u5355\u72b6\u6001\u3002\n\u4e0a\u90e8\u5206\u4ee3\u7801\uff1a\n```php\n        $time = time() - 86400;\n        $where[] = ['order_status', '=', '0'];\n        $where[] = ['create_time', '<', $time];\n        $this->where($where)->update([\n            'order_status' => -1,\n            'close_time' => time(),\n            'update_time' => time()\n        ]);\n```\n\u611f\u6168\u8fd9\u6ca1\u6709\u547d\u4e2d\u7d22\u5f15\u7684\u6279\u91cf\u4fee\u6539.\n\n\u5728\u81ea\u5df1\u6a21\u62dfRR\u7ea7\u522b\u4e8b\u52a1\u4e4b\u540e\uff0c\u786e\u5207\u8ba4\u8bc6\u5230\u5e94\u8be5\u662f\u8fd9\u4e2a\u5b9a\u65f6\u4efb\u52a1\u9020\u6210\u7684\u884c\u5199\u9501\uff08\u4e14\u4e8b\u52a1\u957f\u65f6\u95f4\u6ca1\u6709commit\uff0c\u884cX\u9501\u672a\u91ca\u653e\uff09\uff0c\u5bfc\u81f4\u4e86\u4e0b\u5355\u65f6\u65e0\u6cd5\u8fdb\u884c\u6570\u636e\u5199\u5165\uff0c\u4e8b\u52a1\u963b\u585e\u5bfc\u81f4\u63a5\u53e3\u5f02\u5e38\u3002\n\n\u4e0a\u4e00\u4e0b\u81ea\u5df1\u6a21\u62df\u7684\u4ee3\u7801\uff1a\n\u5927\u81f4\u6d41\u7a0b\u4e3a\uff1a\n1. \u5b9a\u65f6\u811a\u672c\u5f00\u542f\u4e8b\u52a1\uff0c\u4fee\u6539\u5bf9\u5e94\u884c\uff0c\u4e0d\u8fdb\u884c\u4e8b\u52a1\u63d0\u4ea4\n2. \u6b64\u65f6\u6267\u884c\u4e0b\u5355\u6d41\u7a0b\u65f6\uff0csession1\u4e8b\u52a1\u672a\u91ca\u653e\u5bf9\u5e94\u884c\u9501\uff0csession2\u7684update\u8bed\u53e5\u5219\u4f1a\u4e00\u76f4\u5904\u7406lock_wait\u72b6\u6001\uff0c\u7b49\u5f85session1\u7684\u91ca\u653e\u3002\u8fd9\u5c31\u89e3\u91ca\u4e86\u4e0a\u9762\u51fa\u73b0\u7684\u4e00\u76f4lock_wait\u7684\u72b6\u51b5\u3002\n\n```MySQL\nSession 1:\n#T1\u65f6\u523b\uff1b\nSTART TRANSACTION;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 72;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\n#T3\u65f6\u523b\uff1b\n#\u4e0b\u9762\u7684\u662f\u6a21\u62df\u5176\u4ed6\u4fee\u6539\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 72;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 73;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 74;\nCOMMIT;\n\nSession 2:\n#T2\u65f6\u523b\uff1b\nSTART TRANSACTION;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 70 WHERE id = 72;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\nCOMMIT;\n```\n\n\u6700\u540e\u89e3\u51b3\uff0c\u5c31\u662f\u628a\u672a\u652f\u4ed8\u8ba2\u5355\u7684\u81ea\u52a8\u53d6\u6d88\u653e\u7f6e\u961f\u5217\u8fdb\u884c\u5904\u7406\uff0c\u907f\u514d\u5927\u4e8b\u52a1\u7684\u4ea7\u751f\u3002\u4f46\u662f\uff0c\u8fd8\u662f\u81f3\u4e8e\u5b9a\u65f6\u4efb\u52a1\u4e3a\u4f55\u4e00\u76f4\u5904\u4e8erunning\u72b6\u6001\uff0c\u6682\u65f6\u4e5f\u8fd8\u6ca1\u53d1\u73b0\uff0c\u4e5f\u662f\u53ea\u662f\u6000\u7591\u6ca1\u6709\u547d\u4e2d\u7d22\u5f15\u7684sql update\u8bed\u53e5\u3002\u957f\u8def\u6f2b\u6f2b\uff0c\u63a5\u7740\u642c\u7816\uff0c\u6709\u7a7a\u4e86\u518d\u8fdb\u884c\u6392\u67e5\u3002","htmlContent":"<blockquote>\n<p>\u573a\u666f\uff1a\u540c\u4e8b\u5728\u5904\u7406\u4e0b\u5355\u6d41\u7a0b\u7684\u65f6\u5019\uff0c\u7a81\u7136\u53d1\u73b0\u8bf7\u6c42\u63a5\u53e3\u6ca1\u6709\u53cd\u5e94\uff0c\u4e00\u76f4\u5904\u4e8e\u963b\u585e\u72b6\u6001\u3002<\/p>\n<\/blockquote>\n<ol>\n<li>\u5728\u68c0\u67e5\u5177\u4f53\u7684\u4e1a\u52a1\u4ee3\u7801\u4e4b\u540e\uff0c\u53d1\u73b0\u5e76\u6ca1\u6709\u660e\u663e\u7684\u9519\u8bef\u3002<\/li>\n<li>\u601d\u6765\u60f3\u53bb\uff0c\u518d\u6b21\u628a\u76ee\u5149\u6295\u5411\u4e86MySQL\u4e0a\u9762\u3002\u7b2c\u4e00\u6b65\uff0c\u5148\u68c0\u67e5\u4e86\u4e00\u4e0b\u662f\u5426\u6709\u4e00\u76f4\u6267\u884c\u4e2d\u7684\u4e8b\u52a1\u3002<\/li>\n<li>\u8d77\u521d\u6000\u7591\uff0c\u5d4c\u5957\u4e8b\u52a1\u7684\u5199\u6cd5\u7684saveapoint\u4f1a\u4e0d\u4f1a\u5bf9\u4e8b\u52a1\u7684\u6267\u884c\u9020\u6210\u5f71\u54cd\uff0c\u540e\u9762\u8c03\u6574\u4e4b\u540e\u53d1\u73b0\u4e5f\u8fd8\u662f\u4e00\u6837\u3002<\/li>\n<li>\u60b2\u89c2\u9501\uff08\u6ca1\u6709\uff09<\/li>\n<li>\u66f4\u65b0\u8bed\u53e5\u4e5f\u4ee5\u4e3b\u952e\u4f5c\u4e3a\u66f4\u65b0\u6761\u4ef6\uff0c\u5bf9\u5f53\u884c\u5e93\u5b58\u6570\u636e\u4fee\u6539\u65f6\uff0c\u9501\u7684\u9897\u7c92\u5e94\u8be5\u662f\u884c\u9501\u7ea7\u522b\uff08\u4e2a\u4eba\u89c1\u89e3\uff0c\u4e0d\u5bf9\u7684\u8bdd\u5e0c\u671b\u6307\u5bfc\uff09<\/li>\n<\/ol>\n<p>\u5f53\u4e0b\u5355\u63a5\u53e3\u8bf7\u6c42\u65f6\uff0c\u66f4\u65b0\u5e93\u5b58\u7684sql\u8bed\u53e5\u51fa\u73b0\u4e86lock_wait\u7684\u72b6\u6001\u3002<\/p>\n<pre><code class=\"language-MySQL\">SELECT * from information_schema.INNODB_TRX;\nshow processlist;<\/code><\/pre>\n<p><img src=\"http:\/\/laravel.lubiao9.cn\/storage\/2020_08_03\/c37c985a0dfc83b801ed5b626ae3184b7145.png\" alt=\"image.png\"><\/p>\n<p>\u8be1\u5f02\u7684\u4e00\u70b9\uff0c\u5728\u5bf9\u5e94\u4e00\u76f4\u5728running\u7684\u4e8b\u52a1\uff0c\u53d1\u73b0\u4e86trx_query\u662f\u4e3a\u7a7a\u7684\uff0c\uff08\u7ecf\u4eba\u6307\u70b9\u4e4b\u540e\uff0c\u8bf4\u8fd9\u662f\u4e8b\u52a1\u6ca1\u6709\u63d0\u4ea4\u4e5f\u6ca1\u6709\u56de\u6eda\u65f6\u51fa\u73b0\u7684\u72b6\u6001\uff09\u3002\u5728 kill \u5bf9\u5e94\u7684trx_mysql_thread_id \u4e4b\u540e\uff0c\u8ba9\u6d4b\u8bd5\u5e76\u53d1\u7684\u8bf7\u6c42\u8be5\u63a5\u53e3\uff0c\u4e5f\u6ca1\u6709\u51fa\u73b0\u4e8b\u52a1\u5361\u6b7b\u7684\u60c5\u51b5\u3002\u4f46\u662f\uff0c==\u603b\u4f1a\u9694\u4e00\u6bb5\u65f6\u95f4\u5c31\u51fa\u73b0==\uff0c\u771f\u662f\u70e6\u4eba\u7684\u5c0f\u5996\u7cbe\u3002<br>\u4f46\u540e\u9762\u7684\u6211\u7ec6\u5fc3\u5730\u53d1\u73b0\uff0c\u6bcf\u6b21\u51fa\u73b0\u8fd9\u4e2a\u72b6\u51b5\u65f6\uff0c\u4f46\u662f\u4ee5\u6574\u70b9\u4e3a\u4e00\u4e2a\u5355\u4f4d\u5730\u51fa\u73b0\uff0c\u6709\u65f6\u5019\u662f19:30:05 \u6216\u8005\u662f15:00:03\u3002<br>\u7a81\u7136\u6211\u5c31\u95ee\u4e86\u540c\u4e8b\u4e00\u53e5\uff0c\u4f60\u662f\u4e0d\u662fcrontab\u5728\u8dd1\u4ec0\u4e48\u5b9a\u65f6\u811a\u672c\u4e5f\u5728\u4e1a\u52a1\u4e0a\u9762\u56de\u6eda\u5e93\u5b58\u3002\u4ed6\u7a81\u7136\u8bf4\u597d\u50cf\u6709\u4e00\u4e2a\u7684\u5b9a\u65f6\u4efb\u52a1\uff0c\u626b\u63cf\u524d\u5929\u8ba2\u5355\uff0c\u8fdb\u884c\u5e93\u5b58\u4fee\u6b63\u3002<br>\u68c0\u67e5\u4e86\u4ee3\u7801\u4e4b\u540e\uff0c\u53d1\u73b0\u8fd9\u73a9\u610f\uff0c\u7684\u786e\u662f\u76f4\u63a5\u66b4\u529b\u626b\u63cf\u6628\u65e5\u7684\u672a\u652f\u4ed8\u8ba2\u5355\uff0c\u7136\u540e\u9010\u6761\u66f4\u65b0\u5e93\u5b58\u4fe1\u606f\uff0c\u540c\u65f6\u6279\u91cf\u4fee\u6539\u8ba2\u5355\u72b6\u6001\u3002<br>\u4e0a\u90e8\u5206\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-php\">        $time = time() - 86400;\n        $where[] = [&#39;order_status&#39;, &#39;=&#39;, &#39;0&#39;];\n        $where[] = [&#39;create_time&#39;, &#39;&lt;&#39;, $time];\n        $this-&gt;where($where)-&gt;update([\n            &#39;order_status&#39; =&gt; -1,\n            &#39;close_time&#39; =&gt; time(),\n            &#39;update_time&#39; =&gt; time()\n        ]);<\/code><\/pre>\n<p>\u611f\u6168\u8fd9\u6ca1\u6709\u547d\u4e2d\u7d22\u5f15\u7684\u6279\u91cf\u4fee\u6539.<\/p>\n<p>\u5728\u81ea\u5df1\u6a21\u62dfRR\u7ea7\u522b\u4e8b\u52a1\u4e4b\u540e\uff0c\u786e\u5207\u8ba4\u8bc6\u5230\u5e94\u8be5\u662f\u8fd9\u4e2a\u5b9a\u65f6\u4efb\u52a1\u9020\u6210\u7684\u884c\u5199\u9501\uff08\u4e14\u4e8b\u52a1\u957f\u65f6\u95f4\u6ca1\u6709commit\uff0c\u884cX\u9501\u672a\u91ca\u653e\uff09\uff0c\u5bfc\u81f4\u4e86\u4e0b\u5355\u65f6\u65e0\u6cd5\u8fdb\u884c\u6570\u636e\u5199\u5165\uff0c\u4e8b\u52a1\u963b\u585e\u5bfc\u81f4\u63a5\u53e3\u5f02\u5e38\u3002<\/p>\n<p>\u4e0a\u4e00\u4e0b\u81ea\u5df1\u6a21\u62df\u7684\u4ee3\u7801\uff1a<br>\u5927\u81f4\u6d41\u7a0b\u4e3a\uff1a<\/p>\n<ol>\n<li>\u5b9a\u65f6\u811a\u672c\u5f00\u542f\u4e8b\u52a1\uff0c\u4fee\u6539\u5bf9\u5e94\u884c\uff0c\u4e0d\u8fdb\u884c\u4e8b\u52a1\u63d0\u4ea4<\/li>\n<li>\u6b64\u65f6\u6267\u884c\u4e0b\u5355\u6d41\u7a0b\u65f6\uff0csession1\u4e8b\u52a1\u672a\u91ca\u653e\u5bf9\u5e94\u884c\u9501\uff0csession2\u7684update\u8bed\u53e5\u5219\u4f1a\u4e00\u76f4\u5904\u7406lock_wait\u72b6\u6001\uff0c\u7b49\u5f85session1\u7684\u91ca\u653e\u3002\u8fd9\u5c31\u89e3\u91ca\u4e86\u4e0a\u9762\u51fa\u73b0\u7684\u4e00\u76f4lock_wait\u7684\u72b6\u51b5\u3002<\/li>\n<\/ol>\n<pre><code class=\"language-MySQL\">Session 1:\n#T1\u65f6\u523b\uff1b\nSTART TRANSACTION;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 72;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\n#T3\u65f6\u523b\uff1b\n#\u4e0b\u9762\u7684\u662f\u6a21\u62df\u5176\u4ed6\u4fee\u6539\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 72;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 73;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 79 WHERE id = 74;\nCOMMIT;\n\nSession 2:\n#T2\u65f6\u523b\uff1b\nSTART TRANSACTION;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\nupdate yipinfenxiao.goods_attrvalue SET store_count = 70 WHERE id = 72;\nselect id,store_count from yipinfenxiao.goods_attrvalue where id = 72;\nCOMMIT;<\/code><\/pre>\n<p>\u6700\u540e\u89e3\u51b3\uff0c\u5c31\u662f\u628a\u672a\u652f\u4ed8\u8ba2\u5355\u7684\u81ea\u52a8\u53d6\u6d88\u653e\u7f6e\u961f\u5217\u8fdb\u884c\u5904\u7406\uff0c\u907f\u514d\u5927\u4e8b\u52a1\u7684\u4ea7\u751f\u3002\u4f46\u662f\uff0c\u8fd8\u662f\u81f3\u4e8e\u5b9a\u65f6\u4efb\u52a1\u4e3a\u4f55\u4e00\u76f4\u5904\u4e8erunning\u72b6\u6001\uff0c\u6682\u65f6\u4e5f\u8fd8\u6ca1\u53d1\u73b0\uff0c\u4e5f\u662f\u53ea\u662f\u6000\u7591\u6ca1\u6709\u547d\u4e2d\u7d22\u5f15\u7684sql update\u8bed\u53e5\u3002\u957f\u8def\u6f2b\u6f2b\uff0c\u63a5\u7740\u642c\u7816\uff0c\u6709\u7a7a\u4e86\u518d\u8fdb\u884c\u6392\u67e5\u3002<\/p>\n","cover":"http:\/\/qiniu.lubiao9.cn\/upload\/images\/2020-08-29\/41OmrQSkTEzsorIz5ZUtU4.jpg","subMessage":"RR\u7ea7\u522b\u5927\u4e8b\u52a1\u5bfc\u81f4\u4e0b\u5355\u5f02\u5e38","pageview":45,"isEncrypt":0,"tags":[{"aid":2,"id":"27UiMexpEH7f7YbJtAMG6i","name":"MySQL","createTime":"1575421523","updateTime":"1591339020","status":0,"articleCount":5,"pivot":{"articleId":"2WgwyDcXdIb4O5gTKrwImW","tagId":"27UiMexpEH7f7YbJtAMG6i"}}],"category":{"aid":2,"id":"2anf9m21xzVI03kFomz1ta","name":"MySQL","createTime":"1575903925","updateTime":"1591339027","status":0,"articleCount":4,"canDel":1}},{"aid":22,"id":"6ho5R5T8WDvTjvv2s7jM64","title":"JWT\u662f\u5565\uff0c\u5b83\u53c8\u662f\u5982\u4f55\u5b9e\u73b0\u7b7e\u53d1\u4e0e\u9632\u7be1\u6539","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1595564600","deleteTime":null,"updateTime":"1620875236","publishTime":1595564600,"deleteAt":null,"status":0,"content":"#### token\u53d1\u5c55\u80cc\u666f\n\u7531\u4e8ehttp\u534f\u8bae\u662f\u65e0\u72b6\u6001\u7684\uff0c\u6240\u4ee5\u5728\u6700\u521d\u7684\u65f6\u5019\uff0c\u6d4f\u89c8\u5668\u4e0a\u9762\u643a\u5e26\u7684cookie\u4fe1\u606f\u4e2d\u5305\u542b\u4e86\u670d\u52a1\u5668\u7684sessionID\uff0c\u4ee5\u6b64\u4f5c\u4e3a\u6807\u8bc6\u6765\u5224\u65ad\u5f53\u524d\u8bf7\u6c42\u7684\u7528\u6237\u662f\u5f20\u4e09\u8fd8\u662f\u674e\u56db\u3002\u4f46\u662f\u95ee\u9898\u4e5f\u6765\u4e86\u3002\u6682\u4e14\u4e0d\u8bf4sessionID\u5b58\u50a8\u8bfb\u53d6\u65f6\u5bf9\u670d\u52a1\u5668\u7684\u5f00\u9500\uff0c\u5355\u673a\u6a21\u5f0f\u4f3c\u4e4e\u6682\u4e14\u8fd8\u80fd\u7528\uff0c\u4f46\u5982\u679c\u90e8\u7f72\u4e86\u96c6\u7fa4,\u4f8b\u5982A,B\u4e24\u4e2a\u670d\u52a1\u5668\u4e0a\uff0csessionID\u88ab\u5206\u53d1\u5230\u4e0d\u540c\u7684\u670d\u52a1\u5668\u4e0a\u9762\uff0c\u5c82\u4e0d\u662f\u4f1a\u51fa\u73b0\u5f20\u4e09\u5728A\u670d\u52a1\u5668\u627e\u4e0d\u5230\u5bb6\u7684\u60c5\u51b5\u3002\u5373\u4fbf\u662f\u505a\u4e86\u4e2d\u95f4\u5c42\u670d\u52a1\u5668\u6765\u96c6\u4e2d\u7edf\u4e00\u7ba1\u7406session\u4fe1\u606f\u4f3c\u4e4e\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u8fd9\u6837\u4e00\u6765\u5c31\u4f1a\u51fa\u73b0\u4e86\u5f88\u8106\u5f31\u7684\u7ed3\u6784\uff0c\u4e00\u65e6\u4e2d\u5fc3\u7ba1\u7406\u670d\u52a1\u5668\u5b95\u673a\uff0c\u5219\u5176\u4ed6\u4e1a\u52a1\u5904\u7406\u7684\u670d\u52a1\u5668\u5219\u5b8c\u5168\u762b\u75ea\uff0c\u8fd9\u79cd\u98ce\u9669\u663e\u7136\u662f\u65e0\u6cd5\u63a5\u53d7\u7684\u3002\n\n#### 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id=\"my-blog-head5\">JWT\u662f\u5565<\/h4><p>\u5728\u4ecb\u7ecd\u4e86sessionID\u4f5c\u4e3a\u7528\u6237\u6807\u8bc6\u7684\u5c40\u9650\u6027\u4e4b\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u601d\u8003\u662f\u5426\u80fd\u5b58\u5728\u6709\u4e00\u79cd\u7ea6\u5b9a\uff0c\u5373\u80fd\u8ba9\u670d\u52a1\u7aef\u4e0d\u9700\u8981\u5b58\u50a8\u7528\u6237\u7684\u8eab\u4efd\u4fe1\u606f\uff0c\u53c8\u80fd\u8bc6\u522b\u8bf7\u6c42\u6765\u6e90\u7684\u7528\u6237\u8eab\u4efd\u3002<br>\u6240\u4ee5\u6211\u4eec\u5e94\u8be5\u7531\u670d\u52a1\u5668\u5b8c\u6210token\u7684\u7b7e\u53d1\uff0c\u9a8c\u8bc1\u7684\u5de5\u4f5c\uff0c\u5ba2\u6237\u7aef\u53ea\u6709\u4fdd\u5b58\u8d77\u6765\u6bcf\u6b21\u8bf7\u6c42\u643a\u5e26\u8fd9\u4e2atoken\uff0c\u7531\u670d\u52a1\u7aef\u8fdb\u884c\u6821\u9a8c\uff0c\u6821\u9a8c\u4e4b\u540e\u6765\u5224\u65ad\u5f53\u524dtoken\u7684\u771f\u5b9e\u6027\u3002\u8fd9\u6837\u5c31\u80fd\u505a\u5230\u5373\u4fbf\u670d\u52a1\u5668\u4e0d\u9700\u8981\u5b58\u50a8\u7528\u6237token\uff0c\u4e5f\u80fd\u8bc6\u522b\u5f53\u524d\u8bf7\u6c42\u7684\u7528\u6237\u4fe1\u606f\u3002<br>JWT\uff0c\u5168\u540d\u4e3aJSON-WEB-TOKEN\u3002\u987e\u540d\u601d\u4e49\uff0c\u201cjson\u201d\u8868\u660e\u8fd9\u4e1c\u897f\u662f\u4e00\u6bb5\u5b57\u7b26\u4e32\uff0c\u201cweb\u201d\u5373\u4e3a\u5b83\u5e38\u7528\u7684\u573a\u666f\uff0c\u201ctoken\u201d\u5219\u4e3a\u5b83\u5728\u4e00\u4e2a\u7cfb\u7edf\u6240\u627f\u62c5\u7684\u804c\u8d23\u4e0e\u4f5c\u7528\u3002\u5b83\u662f\u73b0\u5728\u5e38\u89c1\u7528\u6237\u524d\u540e\u5206\u79bb\u5f00\u53d1\u65f6\u5019\u4f7f\u7528\u7684token\u7b7e\u53d1\u6821\u9a8c\u65b9\u6848\uff0cjwt\u4e3b\u8981\u7531\u4e09\u4e2a\u90e8\u5206\u7ec4\u6210\uff0c\u5934\u90e8.\u8f7d\u8377.\u7b7e\u540d\u3002<br>\u670d\u52a1\u5668\u7aef\u7528\u6237\u767b\u5f55\u5b8c\u6210\u540e\uff0c\u5bf9\u7528\u6237\u4fe1\u606f\uff08\u5fc5\u987b\u4e0d\u80fd\u6709\u654f\u611f\u4fe1\u606f\uff0c\u82e5\u6709\u654f\u611f\u4fe1\u606f\u4e5f\u9700\u8981\u52a0\u8131\u654f\uff09\uff0c\u56e0\u4e3a\u4f60\u5fc5\u987b\u6e05\u695a\u6b64\u7b7e\u53d1\u51fa\u53bb\u7684token\uff0c\u5934\u90e8\u4e0e\u8f7d\u8377\u7684\u6570\u636e\u662f\u53ef\u4ee5\u968f\u4fbf\u627e\u4e2a\u7f51\u7ad9\u5c31\u80fd\u89e3\u5f00\u7684\uff0c\u6240\u4ee5\u5207\u8bb0\u4e0d\u80fd\u6709\u654f\u611f\u6570\u636e\u3002<br>\u670d\u52a1\u5668\u7b7e\u53d1\u540e\uff0c\u7528\u6237\u4e0b\u6b21\u8bf7\u6c42\u5c31\u4f1a\u643a\u5e26\u8fd9\u4e2atoken\uff0c\uff08\u4e00\u822c\u4f1a\u653e\u5728http\u8bf7\u6c42\u7684head\u91cc\u9762\uff09\uff0c\u670d\u52a1\u7aef\u5728\u4e1a\u52a1\u4ee3\u7801\u5b9e\u73b0\u4e4b\u524d\uff0c\u5148\u8d70\u4e00\u5c42\u4e2d\u95f4\u4ef6\u5bf9token\u4fe1\u606f\u8fdb\u884c\u9a8c\u7b7e\uff0c\u6821\u9a8c\u3002\u5e38\u89c1\u4f1a\u8fdb\u884ctoken\u65f6\u6548\u5224\u65ad\uff0ctoken\u7684ip\u53d8\u5316\u7b49\u7b49\u3002<\/p>\n<h4 class=\"my-blog-head\" id=\"my-blog-head6\">\u5b83\u53c8\u662f\u5982\u4f55\u9632\u6b62token\u88ab\u7be1\u6539\u7684<\/h4><p>JWT\u7b7e\u540d\u7b97\u6cd5\u4e2d\uff0c\u4e00\u822c\u6709\u4e24\u4e2a\u9009\u62e9\uff0c\u4e00\u4e2a\u91c7\u7528HS256,\u53e6\u5916\u4e00\u4e2a\u5c31\u662f\u91c7\u7528RS256\u3002<br>\u7b7e\u540d\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u52a0\u5bc6\u7684\u8fc7\u7a0b\uff0c\u751f\u6210\u4e00\u6bb5\u6807\u8bc6\uff08\u4e5f\u662fJWT\u7684\u4e00\u90e8\u5206\uff09\u4f5c\u4e3a\u63a5\u6536\u65b9\u9a8c\u8bc1\u4fe1\u606f\u662f\u5426\u88ab\u7be1\u6539\u7684\u4f9d\u636e\u3002<br>RS256 (\u91c7\u7528SHA-256 \u7684 RSA \u7b7e\u540d) \u662f\u4e00\u79cd\u975e\u5bf9\u79f0\u7b97\u6cd5, \u5b83\u4f7f\u7528\u516c\u5171\/\u79c1\u94a5\u5bf9: \u6807\u8bc6\u63d0\u4f9b\u65b9\u91c7\u7528\u79c1\u94a5\u751f\u6210\u7b7e\u540d, JWT \u7684\u4f7f\u7528\u65b9\u83b7\u53d6\u516c\u94a5\u4ee5\u9a8c\u8bc1\u7b7e\u540d\u3002\u7531\u4e8e\u516c\u94a5 (\u4e0e\u79c1\u94a5\u76f8\u6bd4) \u4e0d\u9700\u8981\u4fdd\u62a4, \u56e0\u6b64\u5927\u591a\u6570\u6807\u8bc6\u63d0\u4f9b\u65b9\u4f7f\u5176\u6613\u4e8e\u4f7f\u7528\u65b9\u83b7\u53d6\u548c\u4f7f\u7528 (\u901a\u5e38\u901a\u8fc7\u4e00\u4e2a\u5143\u6570\u636eURL)\u3002<br>\u53e6\u4e00\u65b9\u9762, HS256 (\u5e26\u6709 SHA-256 \u7684 HMAC \u662f\u4e00\u79cd\u5bf9\u79f0\u7b97\u6cd5, \u53cc\u65b9\u4e4b\u95f4\u4ec5\u5171\u4eab\u4e00\u4e2a \u5bc6\u94a5\u3002\u7531\u4e8e\u4f7f\u7528\u76f8\u540c\u7684\u5bc6\u94a5\u751f\u6210\u7b7e\u540d\u548c\u9a8c\u8bc1\u7b7e\u540d, \u56e0\u6b64\u5fc5\u987b\u6ce8\u610f\u786e\u4fdd\u5bc6\u94a5\u4e0d\u88ab\u6cc4\u5bc6\u3002<br>\u7b80\u5355\u6765\u8bf4\uff0c\u5e38\u89c1\u7684JWT\u7684\u7b7e\u540d\u65b9\u5f0f\u662f\u6709\u79cd\uff0cHS256\uff08\u5bf9\u79f0\u52a0\u5bc6\uff09\u4e0eRS256\uff08\u975e\u5bf9\u79f0\u52a0\u5bc6\uff09\u3002\u5bf9\u79f0\u52a0\u5bc6\u4e0e\u975e\u5bf9\u79f0\u52a0\u5bc6\u90fd\u4e0d\u662f\u94f6\u5f39\uff0c\u5f00\u53d1\u9700\u8981\u5bf9\u81ea\u5df1\u9879\u76ee\u7684\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u8bc4\u4f30\u3002<\/p>\n<p>\u90e8\u5206\u6458\u81ea\u7b80\u4e66<br>\u4f5c\u8005\uff1aelef<br>\u94fe\u63a5\uff1a<a href=\"https:\/\/www.jianshu.com\/p\/cba0dfe4ad4a\">https:\/\/www.jianshu.com\/p\/cba0dfe4ad4a<\/a><\/p>","cover":null,"subMessage":"json-web-token","pageview":34,"isEncrypt":0,"tags":[{"aid":1,"id":"5ISRwlCPpOhRGNRKkC0Ni","name":"php","createTime":"1575383737","updateTime":"1577439347","status":0,"articleCount":5,"pivot":{"articleId":"6ho5R5T8WDvTjvv2s7jM64","tagId":"5ISRwlCPpOhRGNRKkC0Ni"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}},{"aid":27,"id":"LsNZhxsnHH6JVTmXt6tbo","title":"MySQL\u4e8b\u52a1\u5361\u6b7b\u67e5\u8be2","categoryId":"2anf9m21xzVI03kFomz1ta","createTime":"1596419003","deleteTime":null,"updateTime":"1657008008","publishTime":1595564600,"deleteAt":null,"status":0,"content":"\u67e5\u8be2trx\u72b6\u6001\u4e3arunning\u5f53\u8fdb\u7a0bsleep\u4e2d\u7684\u4e8b\u52a1\n\n``` MySQL\nSELECT\n\t* \nFROM\n\t`information_schema`.`INNODB_TRX` t\n\tINNER JOIN `information_schema`.`PROCESSLIST` p ON t.trx_mysql_thread_id = p.id \nWHERE\n\tt.trx_state = 'RUNNING' \n\tAND p.COMMAND = 'Sleep' \n\tAND p.TIME > 3 \nORDER BY\n\tt.trx_started ASC\n\n```","htmlContent":"<p>\u67e5\u8be2trx\u72b6\u6001\u4e3arunning\u5f53\u8fdb\u7a0bsleep\u4e2d\u7684\u4e8b\u52a1<\/p>\n<pre><code class=\"language-MySQL\">SELECT\n    * \nFROM\n    `information_schema`.`INNODB_TRX` t\n    INNER JOIN `information_schema`.`PROCESSLIST` p ON t.trx_mysql_thread_id = p.id \nWHERE\n    t.trx_state = &#39;RUNNING&#39; \n    AND p.COMMAND = &#39;Sleep&#39; \n    AND p.TIME &gt; 3 \nORDER BY\n    t.trx_started ASC\n<\/code><\/pre>","cover":null,"subMessage":"MySQL\u4e8b\u52a1\u5361\u6b7b\u67e5\u8be2","pageview":12,"isEncrypt":0,"tags":[{"aid":2,"id":"27UiMexpEH7f7YbJtAMG6i","name":"MySQL","createTime":"1575421523","updateTime":"1591339020","status":0,"articleCount":5,"pivot":{"articleId":"LsNZhxsnHH6JVTmXt6tbo","tagId":"27UiMexpEH7f7YbJtAMG6i"}}],"category":{"aid":2,"id":"2anf9m21xzVI03kFomz1ta","name":"MySQL","createTime":"1575903925","updateTime":"1591339027","status":0,"articleCount":4,"canDel":1}},{"aid":29,"id":"445bJOvxWJHebVK26uVWeq","title":"\u4e8b\u52a1\u5206\u6790\u5e38\u7528\u547d\u4ee4\u96c6\u5408","categoryId":"2anf9m21xzVI03kFomz1ta","createTime":"1596520239","deleteTime":null,"updateTime":"1657008085","publishTime":1595564600,"deleteAt":null,"status":0,"content":"\u5728information_schema\u4e0b\u9762\u6709\u4e09\u5f20\u8868:INNODB_TRX\u3001INNODB_LOCKS\u3001INNODB_LOCK_WAITS\uff08\u89e3\u51b3\u95ee\u9898\u65b9\u6cd5\uff09\uff0c\u901a\u8fc7\u8fd9\u4e09\u5f20\u8868\uff0c\u53ef\u4ee5\u66f4\u7b80\u5355\u5730\u76d1\u63a7\u5f53\u524d\u7684\u4e8b\u52a1\u5e76\u5206\u6790\u53ef\u80fd\u5b58\u5728\u7684\u95ee\u9898\u3002\n\n\u6bd4\u8f83\u5e38\u7528\u7684\u5217\uff1a\n\n|\u5217\u540d|\u610f\u4e49|\n|-|-|\n|trx_id|\u4e8b\u52a1id|\n|trx_status|\u5f53\u524d\u4e8b\u52a1\u7684\u72b6\u6001|\n|trx_started|\u4e8b\u52a1\u7684\u5f00\u59cb\u65f6\u95f4|\n|trx_requested_lock_id|\u7b49\u5f85\u4e8b\u52a1\u7684\u9501ID|\n|trx_wait_started|\u4e8b\u52a1\u7b49\u5f85\u7684\u5f00\u59cb\u65f6\u95f4|\n|trx_weight|\u4e8b\u52a1\u7684\u6743\u91cd\uff0c\u53cd\u5e94\u4e00\u4e2a\u4e8b\u52a1\u4fee\u6539\u548c\u9501\u5b9a\u7684\u884c\u6570\uff0c\u5f53\u53d1\u73b0\u6b7b\u9501\u9700\u8981\u56de\u6eda\u65f6\uff0c\u6743\u91cd\u8d8a\u5c0f\u7684\u503c\u88ab\u56de\u6eda|\n|trx_mysql_thread_id|MySQL\u4e2d\u7684\u8fdb\u7a0bID\uff0c\u4e0eshow processlist\u4e2d\u7684ID\u503c\u76f8\u5bf9\u5e94|\n|trx_query|\u4e8b\u52a1\u8fd0\u884c\u7684SQL\u8bed\u53e5|\n\n\u5e38\u89c1\u573a\u666f\u5206\u6790\n- \u82e5\u5b58\u5728running\u7684\u4e8b\u52a1\uff0c\u4e14trx_query\u91cc\u9762\u4e3a\u7a7a\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u5c31\u662f\u957f\u4e8b\u52a1\u4e00\u76f4\u672a\u63d0\u4ea4\u6216\u8005\u672a\u56de\u6eda\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f7f\u7528kill trx_mysql_thread_id\u53bb\u7ed3\u675f\u8fdb\u7a0b\uff0c\u91ca\u653e\u5361\u6b7b\u7684\u4e8b\u52a1\u3002","htmlContent":"<p>\u5728information_schema\u4e0b\u9762\u6709\u4e09\u5f20\u8868:INNODB_TRX\u3001INNODB_LOCKS\u3001INNODB_LOCK_WAITS\uff08\u89e3\u51b3\u95ee\u9898\u65b9\u6cd5\uff09\uff0c\u901a\u8fc7\u8fd9\u4e09\u5f20\u8868\uff0c\u53ef\u4ee5\u66f4\u7b80\u5355\u5730\u76d1\u63a7\u5f53\u524d\u7684\u4e8b\u52a1\u5e76\u5206\u6790\u53ef\u80fd\u5b58\u5728\u7684\u95ee\u9898\u3002<\/p>\n<p>\u6bd4\u8f83\u5e38\u7528\u7684\u5217\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5217\u540d<\/th>\n<th>\u610f\u4e49<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>trx_id<\/td>\n<td>\u4e8b\u52a1id<\/td>\n<\/tr>\n<tr>\n<td>trx_status<\/td>\n<td>\u5f53\u524d\u4e8b\u52a1\u7684\u72b6\u6001<\/td>\n<\/tr>\n<tr>\n<td>trx_started<\/td>\n<td>\u4e8b\u52a1\u7684\u5f00\u59cb\u65f6\u95f4<\/td>\n<\/tr>\n<tr>\n<td>trx_requested_lock_id<\/td>\n<td>\u7b49\u5f85\u4e8b\u52a1\u7684\u9501ID<\/td>\n<\/tr>\n<tr>\n<td>trx_wait_started<\/td>\n<td>\u4e8b\u52a1\u7b49\u5f85\u7684\u5f00\u59cb\u65f6\u95f4<\/td>\n<\/tr>\n<tr>\n<td>trx_weight<\/td>\n<td>\u4e8b\u52a1\u7684\u6743\u91cd\uff0c\u53cd\u5e94\u4e00\u4e2a\u4e8b\u52a1\u4fee\u6539\u548c\u9501\u5b9a\u7684\u884c\u6570\uff0c\u5f53\u53d1\u73b0\u6b7b\u9501\u9700\u8981\u56de\u6eda\u65f6\uff0c\u6743\u91cd\u8d8a\u5c0f\u7684\u503c\u88ab\u56de\u6eda<\/td>\n<\/tr>\n<tr>\n<td>trx_mysql_thread_id<\/td>\n<td>MySQL\u4e2d\u7684\u8fdb\u7a0bID\uff0c\u4e0eshow processlist\u4e2d\u7684ID\u503c\u76f8\u5bf9\u5e94<\/td>\n<\/tr>\n<tr>\n<td>trx_query<\/td>\n<td>\u4e8b\u52a1\u8fd0\u884c\u7684SQL\u8bed\u53e5<\/td>\n<\/tr>\n<\/tbody><\/table>\n<p>\u5e38\u89c1\u573a\u666f\u5206\u6790<\/p>\n<ul>\n<li>\u82e5\u5b58\u5728running\u7684\u4e8b\u52a1\uff0c\u4e14trx_query\u91cc\u9762\u4e3a\u7a7a\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u5c31\u662f\u957f\u4e8b\u52a1\u4e00\u76f4\u672a\u63d0\u4ea4\u6216\u8005\u672a\u56de\u6eda\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f7f\u7528kill trx_mysql_thread_id\u53bb\u7ed3\u675f\u8fdb\u7a0b\uff0c\u91ca\u653e\u5361\u6b7b\u7684\u4e8b\u52a1\u3002<\/li>\n<\/ul>","cover":null,"subMessage":"\u4e8b\u52a1\u5206\u6790\u5e38\u7528\u547d\u4ee4\u96c6\u5408","pageview":10,"isEncrypt":0,"tags":[{"aid":2,"id":"27UiMexpEH7f7YbJtAMG6i","name":"MySQL","createTime":"1575421523","updateTime":"1591339020","status":0,"articleCount":5,"pivot":{"articleId":"445bJOvxWJHebVK26uVWeq","tagId":"27UiMexpEH7f7YbJtAMG6i"}},{"aid":5,"id":"6lc9bqKh5bwXEW06O8SgMk","name":"MySQL\u4e8b\u52a1","createTime":"1591259776","updateTime":"1591339025","status":0,"articleCount":0,"pivot":{"articleId":"445bJOvxWJHebVK26uVWeq","tagId":"6lc9bqKh5bwXEW06O8SgMk"}}],"category":{"aid":2,"id":"2anf9m21xzVI03kFomz1ta","name":"MySQL","createTime":"1575903925","updateTime":"1591339027","status":0,"articleCount":4,"canDel":1}},{"aid":1,"id":"64tCIQb6wrYqBR4NvLkItg","title":"mysql\u6162\u67e5\u8be2\u4e0e\u5206\u6790","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1575384828","deleteTime":null,"updateTime":"1614762895","publishTime":1591935500,"deleteAt":null,"status":0,"content":"Mysql \u6162\u67e5\u8be2\n===============\n#### \u67e5\u8be2\u64cd\u4f5c\n\n```\n\/\/\u67e5\u8be2\u6162\u67e5\u8be2\u89c4\u5b9a\u8ffd\u8e2a\u65f6\u95f4\nshow variables like 'long_query_time';\n\n\/\/\u67e5\u8be2\u662f\u5426\u5f00\u542f\u4e86\u6162\u67e5\u8be2\u8bb0\u5f55\nshow variables like 'slow_query_log'; \n\nmysql> show variables like 'slow_query_log_file';\n+---------------------+---------------------------------+\n| Variable_name       | Value                           |\n+---------------------+---------------------------------+\n| slow_query_log_file | \/www\/server\/data\/mysql-slow.log |\n+---------------------+---------------------------------+\n1 row in set (0.05 sec)\n```\n#### \u8bbe\u7f6e\n```\n\/\/\u8bbe\u7f6e\u5f00\u542f\u6162\u67e5\u8be2\nset global slow_query_log='ON';\n\/\/\u8bbe\u7f6e\u8ffd\u8e2a\u65f6\u95f4\nset global long_query_time=1;\n\/\/\u8bbe\u7f6e\u6162\u67e5\u8be2\u65e5\u5fd7\u4fdd\u5b58\u8def\u5f84\nset global slow_query_log_file='yourPath';\n```\n> ==\u8bbe\u7f6e\u4fee\u6539\u4e4b\u540e\u9700\u8981\u91cd\u542fmysql\u624d\u80fd\u751f\u6548==\n\n#### \u4f7f\u7528explain\u5173\u952e\u5b57\u5206\u6790sql\u7684\u6267\u884c\u60c5\u51b5\nExplain \u53ef\u4ee5\u83b7\u53d6 MySQL \u4e2d SQL \u8bed\u53e5\u7684\u6267\u884c\u8ba1\u5212\uff0c\u6bd4\u5982\u8bed\u53e5\u662f\u5426\u4f7f\u7528\u4e86\u5173\u8054\u67e5\u8be2\u3001\u662f\u5426\u4f7f\u7528\u4e86\u7d22\u5f15\u3001\u626b\u63cf\u884c\u6570\u7b49\u3002\u53ef\u4ee5\u5e2e\u6211\u4eec\u9009\u62e9\u66f4\u597d\u5730\u7d22\u5f15\u548c\u5199\u51fa\u66f4\u4f18\u7684 SQL \u3002\u4f7f\u7528\u65b9\u6cd5\uff1a\u5728\u67e5\u8be2\u8bed\u53e5\u524d\u9762\u52a0\u4e0a explain \u8fd0\u884c\u5c31\u53ef\u4ee5\u4e86\u3002\neg \uff1aexplain select * from t1 where b=100;\n![image.png](http:\/\/laravel.lubiao9.cn\/storage\/2020_08_04\/fba6498309e4859ba907dd021b2e6e129102.png)\n\n|\u5217\u540d|\u89e3\u91ca|\n|-|-|\n|id|\u67e5\u8be2\u7f16\u53f7|\n|select_type|\u67e5\u8be2\u7c7b\u578b:\u663e\u793a\u672c\u884c\u662f\u7b80\u5355\u8fd8\u662f\u590d\u6742\u67e5\u8be2|\n|table|\u6d89\u53ca\u5230\u7684\u8868|\n|partitions|\u5339\u914d\u7684\u5206\u533a\uff1a\u67e5\u8be2\u5c06\u5339\u914d\u8bb0\u5f55\u6240\u5728\u7684\u5206\u533a\u3002\u4ec5\u5f53\u4f7f\u7528partition\u5173\u952e\u5b57\u65f6\uff0c\u624d\u663e\u793a\u6539\u4e86\u3002\u5bf9\u4e8e\u975e\u5206\u533a\u8868\uff0c\u8be5\u503c\u4e3aNULL|\n|type|\u663e\u793a\u4f7f\u7528\u4e86\u4f55\u79cd\u7c7b\u578b\u3002\u4ece\u597d\u5230\u5deeconst,eq_reg,ref,range,index\u548cALL|\n|key|\u5b9e\u9645\u9009\u62e9\u7684\u7d22\u5f15|\n|possible_keys|\u53ef\u80fd\u547d\u4e2d\u7684\u7d22\u5f15|\n|key_len|\u88ab\u9009\u62e9\u7684\u7d22\u5f15\u957f\u5ea6\uff1a\u4e00\u822c\u7528\u4e8e\u5224\u65ad\u8054\u5408\u7d22\u5f15\u6709\u591a\u5c11\u5217\u88ab\u9009\u62e9\u4e86|\n|ref|\u4e0e\u7d22\u5f15\u6bd4\u8f83\u7684\u5217|\n|rows|\u9884\u8ba1\u9700\u8981\u626b\u63cf\u7684\u884c\u6570\uff0c\u5bf9\u4e8eINNDB\u6765\u8bf4\uff0c\u8fd9\u4e2a\u503c\u65f6\u4f30\u7b97\u503c\uff0c\u5e76\u4e0d\u4e00\u5b9a\u51c6\u786e|\n|filtered|\u6309\u6761\u4ef6\u7b5b\u9009\u7684\u884c\u7684\u767e\u5206\u6bd4|\n|Extra|\u9644\u52a0\u4fe1\u606f|\n\n\ntype\u5217\u5177\u4f53\u8be6\u7ec6\u89e3\u6790\uff1a\n1\u3001const \u901a\u8fc7\u4e3b\u952e\u6216\u8005\u552f\u4e00\u4e8c\u7ea7\u7d22\u5f15\u5217 \u7b49\u503c\u67e5\u8be2 \uff08\u706b\u7bad\uff09\n2\u3001ref \n\u2460\u666e\u901a\u4e8c\u7ea7\u7d22\u5f15\u7b49\u503c\u67e5\u8be2\uff0c\u7136\u540e\u56de\u8868\uff1b\n\u2461\u8054\u5408\u7d22\u5f15\uff0c\u6700\u5de6\u8fb9\u7684\u8fde\u7eed\u7d22\u5f15\u5217\u662f\u4e0e\u5e38\u6570\u7684\u7b49\u503c\u6bd4\u8f83\uff08\u9ad8\u94c1\uff09\n3\u3001ref_or_null \uff0cref \u57fa\u7840\u4e0a\u67e5\u8be2null \u503c\n4\u3001range \u4efb\u610f\u7d22\u5f15 in()\uff0c\u6216\u8005\u8303\u56f4\u67e5\u627e\n5\u3001index\uff0c\u904d\u5386\u4e8c\u7ea7\u7d22\u5f15\u5168\u90e8\u8bb0\u5f55\n6\u3001all\uff0c\u5168\u8868\u626b\u63cf","htmlContent":"<h1 class=\"my-blog-head\" id=\"my-blog-head4\">Mysql \u6162\u67e5\u8be2<\/h1><h4 class=\"my-blog-head\" id=\"my-blog-head5\">\u67e5\u8be2\u64cd\u4f5c<\/h4><pre><code>\/\/\u67e5\u8be2\u6162\u67e5\u8be2\u89c4\u5b9a\u8ffd\u8e2a\u65f6\u95f4\nshow variables like &#39;long_query_time&#39;;\n\n\/\/\u67e5\u8be2\u662f\u5426\u5f00\u542f\u4e86\u6162\u67e5\u8be2\u8bb0\u5f55\nshow variables like &#39;slow_query_log&#39;; \n\nmysql&gt; show variables like &#39;slow_query_log_file&#39;;\n+---------------------+---------------------------------+\n| Variable_name       | Value                           |\n+---------------------+---------------------------------+\n| slow_query_log_file | \/www\/server\/data\/mysql-slow.log |\n+---------------------+---------------------------------+\n1 row in set (0.05 sec)<\/code><\/pre>\n<h4 class=\"my-blog-head\" id=\"my-blog-head6\">\u8bbe\u7f6e<\/h4><pre><code>\/\/\u8bbe\u7f6e\u5f00\u542f\u6162\u67e5\u8be2\nset global slow_query_log=&#39;ON&#39;;\n\/\/\u8bbe\u7f6e\u8ffd\u8e2a\u65f6\u95f4\nset global long_query_time=1;\n\/\/\u8bbe\u7f6e\u6162\u67e5\u8be2\u65e5\u5fd7\u4fdd\u5b58\u8def\u5f84\nset global slow_query_log_file=&#39;yourPath&#39;;<\/code><\/pre>\n<blockquote>\n<p>==\u8bbe\u7f6e\u4fee\u6539\u4e4b\u540e\u9700\u8981\u91cd\u542fmysql\u624d\u80fd\u751f\u6548==<\/p>\n<\/blockquote>\n<h4 class=\"my-blog-head\" id=\"my-blog-head7\">\u4f7f\u7528explain\u5173\u952e\u5b57\u5206\u6790sql\u7684\u6267\u884c\u60c5\u51b5<\/h4><p>Explain \u53ef\u4ee5\u83b7\u53d6 MySQL \u4e2d SQL \u8bed\u53e5\u7684\u6267\u884c\u8ba1\u5212\uff0c\u6bd4\u5982\u8bed\u53e5\u662f\u5426\u4f7f\u7528\u4e86\u5173\u8054\u67e5\u8be2\u3001\u662f\u5426\u4f7f\u7528\u4e86\u7d22\u5f15\u3001\u626b\u63cf\u884c\u6570\u7b49\u3002\u53ef\u4ee5\u5e2e\u6211\u4eec\u9009\u62e9\u66f4\u597d\u5730\u7d22\u5f15\u548c\u5199\u51fa\u66f4\u4f18\u7684 SQL \u3002\u4f7f\u7528\u65b9\u6cd5\uff1a\u5728\u67e5\u8be2\u8bed\u53e5\u524d\u9762\u52a0\u4e0a explain \u8fd0\u884c\u5c31\u53ef\u4ee5\u4e86\u3002<br>eg \uff1aexplain select * from t1 where b=100;<br><img src=\"http:\/\/laravel.lubiao9.cn\/storage\/2020_08_04\/fba6498309e4859ba907dd021b2e6e129102.png\" alt=\"image.png\"><\/p>\n<table>\n<thead>\n<tr>\n<th>\u5217\u540d<\/th>\n<th>\u89e3\u91ca<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>id<\/td>\n<td>\u67e5\u8be2\u7f16\u53f7<\/td>\n<\/tr>\n<tr>\n<td>select_type<\/td>\n<td>\u67e5\u8be2\u7c7b\u578b:\u663e\u793a\u672c\u884c\u662f\u7b80\u5355\u8fd8\u662f\u590d\u6742\u67e5\u8be2<\/td>\n<\/tr>\n<tr>\n<td>table<\/td>\n<td>\u6d89\u53ca\u5230\u7684\u8868<\/td>\n<\/tr>\n<tr>\n<td>partitions<\/td>\n<td>\u5339\u914d\u7684\u5206\u533a\uff1a\u67e5\u8be2\u5c06\u5339\u914d\u8bb0\u5f55\u6240\u5728\u7684\u5206\u533a\u3002\u4ec5\u5f53\u4f7f\u7528partition\u5173\u952e\u5b57\u65f6\uff0c\u624d\u663e\u793a\u6539\u4e86\u3002\u5bf9\u4e8e\u975e\u5206\u533a\u8868\uff0c\u8be5\u503c\u4e3aNULL<\/td>\n<\/tr>\n<tr>\n<td>type<\/td>\n<td>\u663e\u793a\u4f7f\u7528\u4e86\u4f55\u79cd\u7c7b\u578b\u3002\u4ece\u597d\u5230\u5deeconst,eq_reg,ref,range,index\u548cALL<\/td>\n<\/tr>\n<tr>\n<td>key<\/td>\n<td>\u5b9e\u9645\u9009\u62e9\u7684\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>possible_keys<\/td>\n<td>\u53ef\u80fd\u547d\u4e2d\u7684\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>key_len<\/td>\n<td>\u88ab\u9009\u62e9\u7684\u7d22\u5f15\u957f\u5ea6\uff1a\u4e00\u822c\u7528\u4e8e\u5224\u65ad\u8054\u5408\u7d22\u5f15\u6709\u591a\u5c11\u5217\u88ab\u9009\u62e9\u4e86<\/td>\n<\/tr>\n<tr>\n<td>ref<\/td>\n<td>\u4e0e\u7d22\u5f15\u6bd4\u8f83\u7684\u5217<\/td>\n<\/tr>\n<tr>\n<td>rows<\/td>\n<td>\u9884\u8ba1\u9700\u8981\u626b\u63cf\u7684\u884c\u6570\uff0c\u5bf9\u4e8eINNDB\u6765\u8bf4\uff0c\u8fd9\u4e2a\u503c\u65f6\u4f30\u7b97\u503c\uff0c\u5e76\u4e0d\u4e00\u5b9a\u51c6\u786e<\/td>\n<\/tr>\n<tr>\n<td>filtered<\/td>\n<td>\u6309\u6761\u4ef6\u7b5b\u9009\u7684\u884c\u7684\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>Extra<\/td>\n<td>\u9644\u52a0\u4fe1\u606f<\/td>\n<\/tr>\n<\/tbody><\/table>\n<p>type\u5217\u5177\u4f53\u8be6\u7ec6\u89e3\u6790\uff1a<br>1\u3001const \u901a\u8fc7\u4e3b\u952e\u6216\u8005\u552f\u4e00\u4e8c\u7ea7\u7d22\u5f15\u5217 \u7b49\u503c\u67e5\u8be2 \uff08\u706b\u7bad\uff09<br>2\u3001ref<br>\u2460\u666e\u901a\u4e8c\u7ea7\u7d22\u5f15\u7b49\u503c\u67e5\u8be2\uff0c\u7136\u540e\u56de\u8868\uff1b<br>\u2461\u8054\u5408\u7d22\u5f15\uff0c\u6700\u5de6\u8fb9\u7684\u8fde\u7eed\u7d22\u5f15\u5217\u662f\u4e0e\u5e38\u6570\u7684\u7b49\u503c\u6bd4\u8f83\uff08\u9ad8\u94c1\uff09<br>3\u3001ref_or_null \uff0cref \u57fa\u7840\u4e0a\u67e5\u8be2null \u503c<br>4\u3001range \u4efb\u610f\u7d22\u5f15 in()\uff0c\u6216\u8005\u8303\u56f4\u67e5\u627e<br>5\u3001index\uff0c\u904d\u5386\u4e8c\u7ea7\u7d22\u5f15\u5168\u90e8\u8bb0\u5f55<br>6\u3001all\uff0c\u5168\u8868\u626b\u63cf<\/p>\n","cover":"","subMessage":"\u5173\u4e8emysql\u6162\u67e5\u8be2\u95ee\u9898","pageview":36,"isEncrypt":0,"tags":[{"aid":1,"id":"5ISRwlCPpOhRGNRKkC0Ni","name":"php","createTime":"1575383737","updateTime":"1577439347","status":0,"articleCount":5,"pivot":{"articleId":"64tCIQb6wrYqBR4NvLkItg","tagId":"5ISRwlCPpOhRGNRKkC0Ni"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}},{"aid":20,"id":"3CLAmnSzOH9TBiM9trzxGs","title":"MySQL\u4e2dInnodb\u7684\u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15","categoryId":"53CCLyOZQQIU7nv0tLGxsO","createTime":"1591326735","deleteTime":null,"updateTime":"1607575774","publishTime":1591338285,"deleteAt":null,"status":0,"content":"\u6570\u636e\u5e93\u8868\u7684\u7d22\u5f15\u4ece\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u4e0a\u53ef\u4ee5\u5206\u4e3a\u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15\uff08\u53c8\u53eb\u4e8c\u7ea7\u7d22\u5f15\uff09\u4e24\u79cd\u3002\n\n```mysql\nuse myTest;                 \n\ndrop table if exists t1; \n\nCREATE TABLE `t1` (\t      \n  `id` int(11) NOT NULL AUTO_INCREMENT,\n  `a` int(20) DEFAULT NULL,\n  `b` int(20) DEFAULT NULL,\n  `c` int(20) DEFAULT NULL,\n  `d` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,\n  PRIMARY KEY (`id`),\n  KEY `idx_a_b` (`a`,`b`),\n  KEY `idx_c` (`c`)\n) ENGINE=InnoDB CHARSET=utf8mb4 ;\n\n```\n### - \u4ec0\u4e48\u662f\u805a\u7c07\u7d22\u5f15\n\u5148\u8bf4\u8bf4\u805a\u7c07\u7d22\u5f15\uff0c\u805a\u7c07\u7d22\u5f15\u6709\u4e24\u4e2a\u660e\u663e\u7279\u5f81\uff1a\n1. \u7d22\u5f15\u5fc5\u987b\u4e3a\u552f\u4e00\u7d22\u5f15\n2. \u53f6\u5b50\u8282\u70b9\u5904\u50a8\u5b58\u7684\u662f\u6574\u884c\u6570\u636e\uff08\u8fd9\u4e5f\u662f\u4e3a\u4f55\u7528\u4e3b\u952e\uff08\u805a\u7c07\u7d22\u5f15\uff09\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u67e5\u8be2\u901f\u5ea6\u4f1a\u8f83\u5feb\u7684\u539f\u56e0\uff08\u51cf\u5c11\u56de\u8868\u67e5\u8be2\uff09\uff09\n\n> \u8fd9\u4e5f\u662f\u4e3a\u4f55\u5728\u65b0\u5efa\u6570\u636e\u8868\u65f6\uff0c\u4f1a\u63a8\u8350\u5efa\u7acb\u81ea\u589eid\u4f5c\u4e3a\u4e3b\u952e\uff0c\u540c\u65f6id\u81ea\u589e\u786e\u4fdd\u4e1a\u52a1\u5c42\u9762\u4e0a\u7684\u65e0\u610f\u4e49\u3002==\u786e\u4fdd\u4e3b\u952eID\u4e1a\u52a1\u4e0a\u65e0\u610f\u4e49\u5f88\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u786e\u4fdd\u4f60\u518d\u5df2\u751f\u6210\u8bb0\u5f55\u7684\u4e3b\u952eID\uff0c\u662f\u4e0d\u4f1a\u88abupdate\u7684==\u3002\u5982\u679c\u662f\u968f\u673a\u4e3b\u952e\u6216\u8005\u9891\u7e41\u66f4\u65b0\u4e3b\u952e\u7684\u8bdd,\u5c31\u4f1a\u5b58\u5728\u6570\u636e\u9875\u9891\u7e41\u65ad\u88c2\uff0cB+\u6811\u4e0d\u9971\u548c\u7684\u60c5\u51b5\uff08\u539f\u56e0\uff1a\u805a\u7c07\u7d22\u5f15\u662f\u6309\u987a\u5e8f\u8fdb\u884c\u6392\u5e8f\u7684\uff09\u3002\u800c\u5982\u679c\u8bbe\u7f6e\u4e3b\u952e\u662f\u81ea\u589e\uff0c\u90a3\u4e48\u6bcf\u4e00\u6b21\u90fd\u662f\u5728\u805a\u96c6\u7d22\u5f15\u7684\u6700\u540e\u589e\u52a0\uff0c\u5f53\u4e00\u9875\u5199\u6ee1\uff0c\u5c31\u4f1a\u81ea\u52a8\u5f00\u8f9f\u4e00\u4e2a\u65b0\u9875\uff0c\u4e0d\u4f1a\u6709\u805a\u96c6\u7d22\u5f15\u6811\u5206\u88c2\u8fd9\u4e00\u6b65\uff0c\u6548\u7387\u4f1a\u6bd4\u968f\u673a\u4e3b\u952e\u9ad8\u5f88\u591a\u3002\u8fd9\u4e5f\u662f\u5f88\u591a\u5efa\u8868\u89c4\u8303\u8981\u6c42\u4e3b\u952e\u81ea\u589e\u7684\u539f\u56e0\u3002\n\n\n### - \u4ec0\u4e48\u662f\u975e\u805a\u7c07\u7d22\u5f15\n\u975e\u805a\u7c07\u7d22\u5f15\u6709\u4e24\u4e2a\u660e\u663e\u7279\u5f81\uff1a\n1. \u7d22\u5f15\u503c\u5fc5\u987b\u4e3a\u53ef\u4e0d\u552f\u4e00\n2. \u53f6\u5b50\u8282\u70b9\u5904\u50a8\u5b58\u7684\u7d22\u5f15\u884c\u8ddf\u4e3b\u952e\uff08key+pk cols\uff09\n\n> \u8f85\u52a9\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\uff0c\u5b58\u50a8\u4e3b\u952e\u503c\uff0c\u800c\u4e0d\u662f\u6574\u884c\u6570\u636e\uff0c\u8fd9\u6837\u7684\u597d\u5904\u6709\uff1a\n1.\u51cf\u5c11\u5b58\u50a8\u6570\u636e\uff0c\u964d\u4f4e\u4e86\u8f85\u52a9\u7d22\u5f15\u7684\u6811\u6240\u5360\u7684\u5b58\u50a8\u7a7a\u95f4 \n2.\u805a\u7c07\u7d22\u5f15\u5217\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u975e\u805a\u7c07\u7d22\u5f15\u5217\u6539\u53d8\u4e0d\u5f71\u54cd\u8f85\u52a9\u7d22\u5f15\u7684\u539f\u672c\u7ed3\u6784\n\n\n![image.png](http:\/\/blogapi.lubiao9.cn\/uploads\/20200605\/5ed9b0678afd5.png)\n\n### - \u805a\u7c07\u7d22\u5f15\u4e00\u5b9a\u662f\u4e3b\u952e\u5417\n\u6709\u4eba\u4f1a\u7591\u8651\u4f3c\u4e4e\u805a\u7c07\u7d22\u5f15\u4e00\u5b9a\u4f1a\u662f\u4e3b\u952e\uff0c\u90a3\u5982\u679c\u6570\u636e\u8868\u4e0d\u5efa\u7acb\u4e3b\u952e\u7684\u8bdd\u662f\u5426\u5c31\u6ca1\u6709\u805a\u7c07\u7d22\u5f15\u4e86\uff1f\n\u5728 InnoDB \u4e2d\uff0c\u805a\u96c6\u7d22\u5f15\u4e0d\u4e00\u5b9a\u662f\u4e3b\u952e\uff0c\u4f46\u662f\u4e3b\u952e\u4e00\u5b9a\u662f\u805a\u96c6\u7d22\u5f15\uff1a\u539f\u56e0\u662f\u5982\u679c\u6ca1\u6709\u5b9a\u4e49\u4e3b\u952e\uff0c\u805a\u96c6\u7d22\u5f15\u53ef\u80fd\u662f\u7b2c\u4e00\u4e2a\u4e0d\u5141\u8bb8\u4e3a null \u7684\u552f\u4e00\u7d22\u5f15\uff0c\u5982\u679c\u4e5f\u6ca1\u6709\u8fd9\u6837\u7684\u552f\u4e00\u7d22\u5f15\uff0cInnoDB \u4f1a\u9009\u62e9\u5185\u7f6e 6 \u5b57\u8282\u957f\u7684 ROWID \u4f5c\u4e3a\u9690\u542b\u7684\u805a\u96c6\u7d22\u5f15\u3002\nInnoDB \u7684\u6570\u636e\u662f\u6309\u7167\u4e3b\u952e\u987a\u5e8f\u5b58\u653e\u7684\uff0c\u800c\u805a\u96c6\u7d22\u5f15\u5c31\u662f\u6309\u7167\u6bcf\u5f20\u8868\u7684\u4e3b\u952e\u6784\u9020\u4e00\u9897 B+ \u6811\uff0c\u5b83\u7684\u53f6\u5b50\u8282\u70b9\u5b58\u653e\u7684\u662f\u6574\u884c\u6570\u636e\u3002\n\u6bcf\u5f20 InnoDB \u8868\u90fd\u6709\u4e00\u4e2a\u805a\u96c6\u7d22\u5f15\uff0c\u4f46\u662f\u4e0d\u4e00\u5b9a\u6709\u4e3b\u952e\u3002\n\n### - \u4f7f\u7528\u975e\u805a\u7c07\u7d22\u5f15\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u4e00\u5b9a\u8981\u56de\u8868\u67e5\u8be2\u5417\uff1f\n\u56de\u8868\u67e5\u8be2\u662f\u7531\u4e8e\u975e\u805a\u7c07\u7d22\u5f15\u7684B+Tree\u53f6\u5b50\u8282\u70b9\u53ea\u8bb0\u5f55\u4e86\uff0cPK cols\u4e0ekey\u3002\u8fd9\u5c31\u9020\u6210\u5f53\u67e5\u8be2\u5b57\u6bb5\u975e\u4e3b\u952e\u8ddf\u7d22\u5f15\u5b57\u6bb5\u65f6\uff0c\u7d22\u5f15\u6811\u65e0\u6cd5\u76f4\u63a5\u63d0\u4f9b\u6240\u6709\u6570\u636e\u5217\uff0c\u4ece\u800c\u8981\u8fdb\u884c\u4e00\u6b21\u56de\u8868\u67e5\u8be2\uff0c\u4e5f\u5c31\u662f\u62ff\u7740\u4e3b\u952eID\u518d\u8fdb\u884c\u4e00\u6b21\u67e5\u8be2\u64cd\u4f5c\u3002\n\u4f8b\u5982t1\u8868\n```mysql\nselect * from t1 where c = 1; #sql_1\nselect id,c from t1 where c = 1; #sql_2\n```\n\u5f53\u67e5\u8be2\u88ab\u975e\u805a\u7c07\u7d22\u5f15\u6db5\u76d6\u5217\u65f6\uff0c\u5219\u4e0d\u9700\u8981\u8d70\u56de\u8868\u64cd\u4f5c\u3002\u5373sql_2\u4e0d\u9700\u8981\u8d70\u56de\u8868\u67e5\u8be2\uff0csql_1\u9700\u8981\u3002\n","htmlContent":"<p>\u6570\u636e\u5e93\u8868\u7684\u7d22\u5f15\u4ece\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\u4e0a\u53ef\u4ee5\u5206\u4e3a\u805a\u7c07\u7d22\u5f15\u548c\u975e\u805a\u7c07\u7d22\u5f15\uff08\u53c8\u53eb\u4e8c\u7ea7\u7d22\u5f15\uff09\u4e24\u79cd\u3002<\/p>\n<pre><code class=\"language-mysql\">use myTest;                 \n\ndrop table if exists t1; \n\nCREATE TABLE `t1` (          \n  `id` int(11) NOT NULL AUTO_INCREMENT,\n  `a` int(20) DEFAULT NULL,\n  `b` int(20) DEFAULT NULL,\n  `c` int(20) DEFAULT NULL,\n  `d` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,\n  PRIMARY KEY (`id`),\n  KEY `idx_a_b` (`a`,`b`),\n  KEY `idx_c` (`c`)\n) ENGINE=InnoDB CHARSET=utf8mb4 ;\n<\/code><\/pre>\n<h3 class=\"my-blog-head\" id=\"my-blog-head8\">- \u4ec0\u4e48\u662f\u805a\u7c07\u7d22\u5f15<\/h3><p>\u5148\u8bf4\u8bf4\u805a\u7c07\u7d22\u5f15\uff0c\u805a\u7c07\u7d22\u5f15\u6709\u4e24\u4e2a\u660e\u663e\u7279\u5f81\uff1a<\/p>\n<ol>\n<li>\u7d22\u5f15\u5fc5\u987b\u4e3a\u552f\u4e00\u7d22\u5f15<\/li>\n<li>\u53f6\u5b50\u8282\u70b9\u5904\u50a8\u5b58\u7684\u662f\u6574\u884c\u6570\u636e\uff08\u8fd9\u4e5f\u662f\u4e3a\u4f55\u7528\u4e3b\u952e\uff08\u805a\u7c07\u7d22\u5f15\uff09\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u67e5\u8be2\u901f\u5ea6\u4f1a\u8f83\u5feb\u7684\u539f\u56e0\uff08\u51cf\u5c11\u56de\u8868\u67e5\u8be2\uff09\uff09<\/li>\n<\/ol>\n<blockquote>\n<p>\u8fd9\u4e5f\u662f\u4e3a\u4f55\u5728\u65b0\u5efa\u6570\u636e\u8868\u65f6\uff0c\u4f1a\u63a8\u8350\u5efa\u7acb\u81ea\u589eid\u4f5c\u4e3a\u4e3b\u952e\uff0c\u540c\u65f6id\u81ea\u589e\u786e\u4fdd\u4e1a\u52a1\u5c42\u9762\u4e0a\u7684\u65e0\u610f\u4e49\u3002==\u786e\u4fdd\u4e3b\u952eID\u4e1a\u52a1\u4e0a\u65e0\u610f\u4e49\u5f88\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u786e\u4fdd\u4f60\u518d\u5df2\u751f\u6210\u8bb0\u5f55\u7684\u4e3b\u952eID\uff0c\u662f\u4e0d\u4f1a\u88abupdate\u7684==\u3002\u5982\u679c\u662f\u968f\u673a\u4e3b\u952e\u6216\u8005\u9891\u7e41\u66f4\u65b0\u4e3b\u952e\u7684\u8bdd,\u5c31\u4f1a\u5b58\u5728\u6570\u636e\u9875\u9891\u7e41\u65ad\u88c2\uff0cB+\u6811\u4e0d\u9971\u548c\u7684\u60c5\u51b5\uff08\u539f\u56e0\uff1a\u805a\u7c07\u7d22\u5f15\u662f\u6309\u987a\u5e8f\u8fdb\u884c\u6392\u5e8f\u7684\uff09\u3002\u800c\u5982\u679c\u8bbe\u7f6e\u4e3b\u952e\u662f\u81ea\u589e\uff0c\u90a3\u4e48\u6bcf\u4e00\u6b21\u90fd\u662f\u5728\u805a\u96c6\u7d22\u5f15\u7684\u6700\u540e\u589e\u52a0\uff0c\u5f53\u4e00\u9875\u5199\u6ee1\uff0c\u5c31\u4f1a\u81ea\u52a8\u5f00\u8f9f\u4e00\u4e2a\u65b0\u9875\uff0c\u4e0d\u4f1a\u6709\u805a\u96c6\u7d22\u5f15\u6811\u5206\u88c2\u8fd9\u4e00\u6b65\uff0c\u6548\u7387\u4f1a\u6bd4\u968f\u673a\u4e3b\u952e\u9ad8\u5f88\u591a\u3002\u8fd9\u4e5f\u662f\u5f88\u591a\u5efa\u8868\u89c4\u8303\u8981\u6c42\u4e3b\u952e\u81ea\u589e\u7684\u539f\u56e0\u3002<\/p>\n<\/blockquote>\n<h3 class=\"my-blog-head\" id=\"my-blog-head9\">- \u4ec0\u4e48\u662f\u975e\u805a\u7c07\u7d22\u5f15<\/h3><p>\u975e\u805a\u7c07\u7d22\u5f15\u6709\u4e24\u4e2a\u660e\u663e\u7279\u5f81\uff1a<\/p>\n<ol>\n<li>\u7d22\u5f15\u503c\u5fc5\u987b\u4e3a\u53ef\u4e0d\u552f\u4e00<\/li>\n<li>\u53f6\u5b50\u8282\u70b9\u5904\u50a8\u5b58\u7684\u7d22\u5f15\u884c\u8ddf\u4e3b\u952e\uff08key+pk cols\uff09<\/li>\n<\/ol>\n<blockquote>\n<p>\u8f85\u52a9\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\uff0c\u5b58\u50a8\u4e3b\u952e\u503c\uff0c\u800c\u4e0d\u662f\u6574\u884c\u6570\u636e\uff0c\u8fd9\u6837\u7684\u597d\u5904\u6709\uff1a<br>1.\u51cf\u5c11\u5b58\u50a8\u6570\u636e\uff0c\u964d\u4f4e\u4e86\u8f85\u52a9\u7d22\u5f15\u7684\u6811\u6240\u5360\u7684\u5b58\u50a8\u7a7a\u95f4<br>2.\u805a\u7c07\u7d22\u5f15\u5217\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u975e\u805a\u7c07\u7d22\u5f15\u5217\u6539\u53d8\u4e0d\u5f71\u54cd\u8f85\u52a9\u7d22\u5f15\u7684\u539f\u672c\u7ed3\u6784<\/p>\n<\/blockquote>\n<p><img src=\"http:\/\/blogapi.lubiao9.cn\/uploads\/20200605\/5ed9b0678afd5.png\" alt=\"image.png\"><\/p>\n<h3 class=\"my-blog-head\" id=\"my-blog-head10\">- \u805a\u7c07\u7d22\u5f15\u4e00\u5b9a\u662f\u4e3b\u952e\u5417<\/h3><p>\u6709\u4eba\u4f1a\u7591\u8651\u4f3c\u4e4e\u805a\u7c07\u7d22\u5f15\u4e00\u5b9a\u4f1a\u662f\u4e3b\u952e\uff0c\u90a3\u5982\u679c\u6570\u636e\u8868\u4e0d\u5efa\u7acb\u4e3b\u952e\u7684\u8bdd\u662f\u5426\u5c31\u6ca1\u6709\u805a\u7c07\u7d22\u5f15\u4e86\uff1f<br>\u5728 InnoDB \u4e2d\uff0c\u805a\u96c6\u7d22\u5f15\u4e0d\u4e00\u5b9a\u662f\u4e3b\u952e\uff0c\u4f46\u662f\u4e3b\u952e\u4e00\u5b9a\u662f\u805a\u96c6\u7d22\u5f15\uff1a\u539f\u56e0\u662f\u5982\u679c\u6ca1\u6709\u5b9a\u4e49\u4e3b\u952e\uff0c\u805a\u96c6\u7d22\u5f15\u53ef\u80fd\u662f\u7b2c\u4e00\u4e2a\u4e0d\u5141\u8bb8\u4e3a null \u7684\u552f\u4e00\u7d22\u5f15\uff0c\u5982\u679c\u4e5f\u6ca1\u6709\u8fd9\u6837\u7684\u552f\u4e00\u7d22\u5f15\uff0cInnoDB \u4f1a\u9009\u62e9\u5185\u7f6e 6 \u5b57\u8282\u957f\u7684 ROWID \u4f5c\u4e3a\u9690\u542b\u7684\u805a\u96c6\u7d22\u5f15\u3002<br>InnoDB \u7684\u6570\u636e\u662f\u6309\u7167\u4e3b\u952e\u987a\u5e8f\u5b58\u653e\u7684\uff0c\u800c\u805a\u96c6\u7d22\u5f15\u5c31\u662f\u6309\u7167\u6bcf\u5f20\u8868\u7684\u4e3b\u952e\u6784\u9020\u4e00\u9897 B+ \u6811\uff0c\u5b83\u7684\u53f6\u5b50\u8282\u70b9\u5b58\u653e\u7684\u662f\u6574\u884c\u6570\u636e\u3002<br>\u6bcf\u5f20 InnoDB \u8868\u90fd\u6709\u4e00\u4e2a\u805a\u96c6\u7d22\u5f15\uff0c\u4f46\u662f\u4e0d\u4e00\u5b9a\u6709\u4e3b\u952e\u3002<\/p>\n<h3 class=\"my-blog-head\" id=\"my-blog-head11\">- \u4f7f\u7528\u975e\u805a\u7c07\u7d22\u5f15\u67e5\u8be2\u6570\u636e\u65f6\uff0c\u4e00\u5b9a\u8981\u56de\u8868\u67e5\u8be2\u5417\uff1f<\/h3><p>\u56de\u8868\u67e5\u8be2\u662f\u7531\u4e8e\u975e\u805a\u7c07\u7d22\u5f15\u7684B+Tree\u53f6\u5b50\u8282\u70b9\u53ea\u8bb0\u5f55\u4e86\uff0cPK cols\u4e0ekey\u3002\u8fd9\u5c31\u9020\u6210\u5f53\u67e5\u8be2\u5b57\u6bb5\u975e\u4e3b\u952e\u8ddf\u7d22\u5f15\u5b57\u6bb5\u65f6\uff0c\u7d22\u5f15\u6811\u65e0\u6cd5\u76f4\u63a5\u63d0\u4f9b\u6240\u6709\u6570\u636e\u5217\uff0c\u4ece\u800c\u8981\u8fdb\u884c\u4e00\u6b21\u56de\u8868\u67e5\u8be2\uff0c\u4e5f\u5c31\u662f\u62ff\u7740\u4e3b\u952eID\u518d\u8fdb\u884c\u4e00\u6b21\u67e5\u8be2\u64cd\u4f5c\u3002<br>\u4f8b\u5982t1\u8868<\/p>\n<pre><code class=\"language-mysql\">select * from t1 where c = 1; #sql_1\nselect id,c from t1 where c = 1; #sql_2<\/code><\/pre>\n<p>\u5f53\u67e5\u8be2\u88ab\u975e\u805a\u7c07\u7d22\u5f15\u6db5\u76d6\u5217\u65f6\uff0c\u5219\u4e0d\u9700\u8981\u8d70\u56de\u8868\u64cd\u4f5c\u3002\u5373sql_2\u4e0d\u9700\u8981\u8d70\u56de\u8868\u67e5\u8be2\uff0csql_1\u9700\u8981\u3002<\/p>\n","cover":null,"subMessage":"MySQL\u805a\u7c07\u7d22\u5f15\u4e0e\u975e\u805a\u7c07\u7d22\u5f15\u5206\u6790","pageview":13,"isEncrypt":0,"tags":[{"aid":2,"id":"27UiMexpEH7f7YbJtAMG6i","name":"MySQL","createTime":"1575421523","updateTime":"1591339020","status":0,"articleCount":5,"pivot":{"articleId":"3CLAmnSzOH9TBiM9trzxGs","tagId":"27UiMexpEH7f7YbJtAMG6i"}}],"category":{"aid":1,"id":"53CCLyOZQQIU7nv0tLGxsO","name":"php","createTime":"1575383718","updateTime":"1591338285","status":0,"articleCount":6,"canDel":1}}]}}