{"id":201665,"date":"2025-05-10T12:34:42","date_gmt":"2025-05-10T04:34:42","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201665\/"},"modified":"2025-05-10T12:34:42","modified_gmt":"2025-05-10T04:34:42","slug":"redis%e6%80%a7%e8%83%bd%e7%93%b6%e9%a2%88%e6%8f%ad%e7%a7%98%ef%bc%9a%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%e5%a4%a7key%e9%97%ae%e9%a2%98%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201665\/","title":{"rendered":"Redis\u6027\u80fd\u74f6\u9888\u63ed\u79d8\uff1a\u5982\u4f55\u4f18\u5316\u5927key\u95ee\u9898\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>Redis\u6027\u80fd\u74f6\u9888\u63ed\u79d8\uff1a\u5982\u4f55\u4f18\u5316\u5927key\u95ee\u9898\uff1f<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6570\u636e\u5e93\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300aRedis\u6027\u80fd\u74f6\u9888\u63ed\u79d8\uff1a\u5982\u4f55\u4f18\u5316\u5927key\u95ee\u9898\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u5185\u5b58\u3001Redis\u3001\u6027\u80fd\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n<h2>Redis\u6027\u80fd\u74f6\u9888\u63ed\u79d8\uff1a\u5982\u4f55\u4f18\u5316\u5927key\u95ee\u9898\uff1f<\/h2>\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230420\/168195600364409ca3a67e2.png\" style=\"max-width:100%\" class=\"aligncenter\"> <\/p>\n<h2>1. \u4ec0\u4e48\u662fRedis\u5927key\u95ee\u9898<\/h2>\n<p>Redis\u5927key\u95ee\u9898\u6307\u7684\u662f\u67d0\u4e2akey\u5bf9\u5e94\u7684value\u503c\u6240\u5360\u7684\u5185\u5b58\u7a7a\u95f4\u6bd4\u8f83\u5927\uff0c\u5bfc\u81f4Redis\u7684\u6027\u80fd\u4e0b\u964d\u3001\u5185\u5b58\u4e0d\u8db3\u3001\u6570\u636e\u4e0d\u5747\u8861\u4ee5\u53ca\u4e3b\u4ece\u540c\u6b65\u5ef6\u8fdf\u7b49\u95ee\u9898\u3002<\/p>\n<p>\u5230\u5e95\u591a\u5927\u7684\u6570\u636e\u91cf\u624d\u7b97\u662f\u5927key\uff1f<\/p>\n<p>\u6ca1\u6709\u56fa\u5b9a\u7684\u5224\u522b\u6807\u51c6\uff0c\u901a\u5e38\u8ba4\u4e3a\u5b57\u7b26\u4e32\u7c7b\u578b\u7684key\u5bf9\u5e94\u7684value\u503c\u5360\u7528\u7a7a\u95f4\u5927\u4e8e1M\uff0c\u6216\u8005\u96c6\u5408\u7c7b\u578b\u7684k\u5143\u7d20\u6570\u91cf\u8d85\u8fc71\u4e07\u4e2a\uff0c\u5c31\u7b97\u662f\u5927key\u3002<\/p>\n<p>Redis\u5927key\u95ee\u9898\u7684\u5b9a\u4e49\u53ca\u8bc4\u5224\u51c6\u5219\u5e76\u975e\u4e00\u6210\u4e0d\u53d8\uff0c\u800c\u5e94\u6839\u636eRedis\u7684\u5b9e\u9645\u8fd0\u7528\u4ee5\u53ca\u4e1a\u52a1\u9700\u6c42\u6765\u7efc\u5408\u8bc4\u4f30\u3002\u4f8b\u5982\uff0c\u5728\u9ad8\u5e76\u53d1\u4e14\u4f4e\u5ef6\u8fdf\u7684\u573a\u666f\u4e2d\uff0c\u4ec510kb\u53ef\u80fd\u5c31\u5df2\u6784\u6210\u5927key\uff1b\u7136\u800c\u5728\u4f4e\u5e76\u53d1\u3001\u9ad8\u5bb9\u91cf\u7684\u73af\u5883\u4e0b\uff0c\u5927key\u7684\u754c\u9650\u53ef\u80fd\u5728100kb\u3002\u56e0\u6b64\uff0c\u5728\u8bbe\u8ba1\u4e0e\u8fd0\u7528Redis\u65f6\uff0c\u8981\u4f9d\u636e\u4e1a\u52a1\u9700\u6c42\u4e0e\u6027\u80fd\u6307\u6807\u6765\u786e\u7acb\u5408\u7406\u7684\u5927key\u9608\u503c\u3002<\/p>\n<h2>2. \u5927key\u5e26\u6765\u7684\u5f71\u54cd<\/h2>\n<ol>\n<li>\u5185\u5b58\u5360\u7528\u8fc7\u9ad8\u3002\u5927Key\u5360\u7528\u8fc7\u591a\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u53ef\u80fd\u5bfc\u81f4\u53ef\u7528\u5185\u5b58\u4e0d\u8db3\uff0c\u4ece\u800c\u89e6\u53d1\u5185\u5b58\u6dd8\u6c70\u7b56\u7565\u3002\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u8017\u5c3d\uff0cRedis\u5b9e\u4f8b\u5d29\u6e83\uff0c\u5f71\u54cd\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/li>\n<li>\u6027\u80fd\u4e0b\u964d\u3002\u5927Key\u4f1a\u5360\u7528\u5927\u91cf\u5185\u5b58\u7a7a\u95f4\uff0c\u5bfc\u81f4\u5185\u5b58\u788e\u7247\u589e\u52a0\uff0c\u8fdb\u800c\u5f71\u54cdRedis\u7684\u6027\u80fd\u3002\u5bf9\u4e8e\u5927Key\u7684\u64cd\u4f5c\uff0c\u5982\u8bfb\u53d6\u3001\u5199\u5165\u3001\u5220\u9664\u7b49\uff0c\u90fd\u4f1a\u6d88\u8017\u66f4\u591a\u7684CPU\u65f6\u95f4\u548c\u5185\u5b58\u8d44\u6e90\uff0c\u8fdb\u4e00\u6b65\u964d\u4f4e\u7cfb\u7edf\u6027\u80fd\u3002<\/li>\n<li>\u963b\u585e\u5176\u4ed6\u64cd\u4f5c\u3002\u67d0\u4e9b\u5bf9\u5927Key\u7684\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4Redis\u5b9e\u4f8b\u963b\u585e\u3002\u4f8b\u5982\uff0c\u4f7f\u7528DEL\u547d\u4ee4\u5220\u9664\u4e00\u4e2a\u5927Key\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4Redis\u5b9e\u4f8b\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u65e0\u6cd5\u54cd\u5e94\u5176\u4ed6\u5ba2\u6237\u7aef\u8bf7\u6c42\uff0c\u4ece\u800c\u5f71\u54cd\u7cfb\u7edf\u7684\u54cd\u5e94\u65f6\u95f4\u548c\u541e\u5410\u91cf\u3002<\/li>\n<li>\u7f51\u7edc\u62e5\u585e\u3002\u6bcf\u6b21\u83b7\u53d6\u5927key\u4ea7\u751f\u7684\u7f51\u7edc\u6d41\u91cf\u8f83\u5927\uff0c\u53ef\u80fd\u9020\u6210\u673a\u5668\u6216\u5c40\u57df\u7f51\u7684\u5e26\u5bbd\u88ab\u6253\u6ee1\uff0c\u540c\u65f6\u6ce2\u53ca\u5176\u4ed6\u670d\u52a1\u3002\u4f8b\u5982\uff1a\u4e00\u4e2a\u5927key\u5360\u7528\u7a7a\u95f4\u662f1MB\uff0c\u6bcf\u79d2\u8bbf\u95ee1000\u6b21\uff0c\u5c31\u67091000MB\u7684\u6d41\u91cf\u3002<\/li>\n<li>\u4e3b\u4ece\u540c\u6b65\u5ef6\u8fdf\u3002\u5f53Redis\u5b9e\u4f8b\u914d\u7f6e\u4e86\u4e3b\u4ece\u540c\u6b65\u65f6\uff0c\u5927Key\u53ef\u80fd\u5bfc\u81f4\u4e3b\u4ece\u540c\u6b65\u5ef6\u8fdf\u3002\u7531\u4e8e\u5927Key\u5360\u7528\u8f83\u591a\u5185\u5b58\uff0c\u540c\u6b65\u8fc7\u7a0b\u4e2d\u9700\u8981\u4f20\u8f93\u5927\u91cf\u6570\u636e\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u4e3b\u4ece\u4e4b\u95f4\u7684\u7f51\u7edc\u4f20\u8f93\u5ef6\u8fdf\u589e\u52a0\uff0c\u8fdb\u800c\u5f71\u54cd\u6570\u636e\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u6570\u636e\u503e\u659c\u3002\u5728Redis\u96c6\u7fa4\u6a21\u5f0f\u4e2d\uff0c\u67d0\u4e2a\u6570\u636e\u5206\u7247\u7684\u5185\u5b58\u4f7f\u7528\u7387\u8fdc\u8d85\u5176\u4ed6\u6570\u636e\u5206\u7247\uff0c\u65e0\u6cd5\u4f7f\u6570\u636e\u5206\u7247\u7684\u5185\u5b58\u8d44\u6e90\u8fbe\u5230\u5747\u8861\u3002\u53e6\u5916\u4e5f\u53ef\u80fd\u9020\u6210Redis\u5185\u5b58\u8fbe\u5230maxmemory\u53c2\u6570\u5b9a\u4e49\u7684\u4e0a\u9650\u5bfc\u81f4\u91cd\u8981\u7684key\u88ab\u9010\u51fa\uff0c\u751a\u81f3\u5f15\u53d1\u5185\u5b58\u6ea2\u51fa\u3002<\/li>\n<\/ol>\n<h2>3. \u5927key\u4ea7\u751f\u7684\u539f\u56e0<\/h2>\n<ol>\n<li>\u4e1a\u52a1\u8bbe\u8ba1\u4e0d\u5408\u7406\u3002\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u539f\u56e0\uff0c\u4e0d\u5e94\u8be5\u628a\u5927\u91cf\u6570\u636e\u5b58\u50a8\u5728\u4e00\u4e2akey\u4e2d\uff0c\u800c\u5e94\u8be5\u5206\u6563\u5230\u591a\u4e2akey\u3002\u4f8b\u5982\uff1a\u628a\u5168\u56fd\u6570\u636e\u6309\u7167\u7701\u884c\u653f\u533a\u62c6\u5206\u621034\u4e2akey\uff0c\u6216\u8005\u6309\u7167\u57ce\u5e02\u62c6\u5206\u6210300\u4e2akey\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u964d\u4f4e\u4ea7\u751f\u5927key\u7684\u6982\u7387\u3002<\/li>\n<li>\u6ca1\u6709\u9884\u89c1value\u7684\u52a8\u6001\u589e\u957f\u95ee\u9898\u3002\u5982\u679c\u4e00\u76f4\u6dfb\u52a0value\u6570\u636e\uff0c\u6ca1\u6709\u5220\u9664\u673a\u5236\u3001\u8fc7\u671f\u673a\u5236\u6216\u8005\u9650\u5236\u6570\u91cf\uff0c\u8fdf\u65e9\u51fa\u73b0\u5927key\u3002\u4f8b\u5982\uff1a\u5fae\u535a\u660e\u661f\u7684\u7c89\u4e1d\u5217\u8868\u3001\u70ed\u95e8\u8bc4\u8bba\u7b49\u3002<\/li>\n<li>\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u4e0d\u5f53\u3002\u5982\u679c\u6ca1\u6709\u7ed9\u67d0\u4e2akey\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u6216\u8005\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e\u8f83\u957f\u3002\u968f\u7740\u65f6\u95f4\u63a8\u79fb\uff0cvalue\u6570\u91cf\u5feb\u901f\u7d2f\u79ef\uff0c\u6700\u7ec8\u5f62\u6210\u5927key\u3002<\/li>\n<li>\u7a0b\u5e8fbug\u3002\u67d0\u4e9b\u5f02\u5e38\u60c5\u51b5\u5bfc\u81f4\u67d0\u4e9bkey\u7684\u751f\u547d\u5468\u671f\u8d85\u51fa\u9884\u671f\uff0c\u6216\u8005value\u6570\u91cf\u5f02\u5e38\u589e\u957f \uff0c\u4e5f\u4f1a\u4ea7\u751f\u5927key\u3002<\/li>\n<\/ol>\n<h2>4. \u600e\u6837\u6392\u67e5\u5927key<\/h2>\n<h3>4.1 SCAN\u547d\u4ee4<\/h3>\n<p>\u901a\u8fc7\u4f7f\u7528Redis\u7684SCAN\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u9010\u6b65\u904d\u5386\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709Key\u3002\u7ed3\u5408\u5176\u4ed6\u547d\u4ee4\uff08\u5982STRLEN\u3001LLEN\u3001SCARD\u3001HLEN\u7b49\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u8bc6\u522b\u51fa\u5927Key\u3002SCAN\u547d\u4ee4\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u53ef\u4ee5\u5728\u4e0d\u963b\u585eRedis\u5b9e\u4f8b\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u904d\u5386\u3002<\/p>\n<h3>4.2 bigkeys\u53c2\u6570<\/h3>\n<p>\u4f7f\u7528redis-cli\u547d\u4ee4\u5ba2\u6237\u7aef\uff0c\u8fde\u63a5Redis\u670d\u52a1\u7684\u65f6\u5019\uff0c\u52a0\u4e0a &nbsp;\u2014bigkeys \u53c2\u6570\uff0c\u53ef\u4ee5\u626b\u63cf\u6bcf\u79cd\u6570\u636e\u7c7b\u578b\u6570\u91cf\u6700\u5927\u7684key\u3002<\/p>\n<blockquote style=\"margin-top: 5px;margin-bottom: 5px;padding-left: 1em;margin-left: 0px;opacity: 0.6\">\n<p>redis-cli -h 127.0.0.1 -p 6379 \u2014bigkeys<\/p>\n<\/blockquote>\n<h3>4.3 Redis RDB Tools\u5de5\u5177<\/h3>\n<p>\u4f7f\u7528\u5f00\u6e90\u5de5\u5177Redis RDB Tools\uff0c\u5206\u6790RDB\u6587\u4ef6\uff0c\u626b\u63cf\u51faRedis\u5927key\u3002<\/p>\n<p>\u4f8b\u5982\uff1a\u8f93\u51fa\u5360\u7528\u5185\u5b58\u5927\u4e8e1kb\uff0c\u6392\u540d\u524d3\u7684keys\u3002<\/p>\n<blockquote style=\"margin-top: 5px;margin-bottom: 5px;padding-left: 1em;margin-left: 0px;opacity: 0.6\">\n<p>rdb \u2014commond memory \u2014bytes 1024 \u2014largest 3 dump.rbd<\/p>\n<\/blockquote>\n<h2>5. \u600e\u4e48\u89e3\u51b3\u5927key<\/h2>\n<ol>\n<li>\u62c6\u5206\u6210\u591a\u4e2a\u5c0fkey\u3002\u8fd9\u662f\u6700\u5bb9\u6613\u60f3\u5230\u7684\u529e\u6cd5\uff0c\u964d\u4f4e\u5355key\u7684\u5927\u5c0f\uff0c\u8bfb\u53d6\u53ef\u4ee5\u7528mget\u6279\u91cf\u8bfb\u53d6\u3002<\/li>\n<li>\u6570\u636e\u538b\u7f29\u3002\u4f7f\u7528String\u7c7b\u578b\u7684\u65f6\u5019\uff0c\u4f7f\u7528\u538b\u7f29\u7b97\u6cd5\u51cf\u5c11value\u5927\u5c0f\u3002\u6216\u8005\u662f\u4f7f\u7528Hash\u7c7b\u578b\u5b58\u50a8\uff0c\u56e0\u4e3aHash\u7c7b\u578b\u5e95\u5c42\u4f7f\u7528\u4e86\u538b\u7f29\u5217\u8868\u6570\u636e\u7ed3\u6784\u3002<\/li>\n<li>\u8bbe\u7f6e\u5408\u7406\u7684\u8fc7\u671f\u65f6\u95f4\u3002\u4e3a\u6bcf\u4e2akey\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\uff0c\u5e76\u8bbe\u7f6e\u5408\u7406\u7684\u8fc7\u671f\u65f6\u95f4\uff0c\u4ee5\u4fbf\u5728\u6570\u636e\u5931\u6548\u540e\u81ea\u52a8\u6e05\u7406\uff0c\u907f\u514d\u957f\u65f6\u95f4\u7d2f\u79ef\u7684\u5927Key\u95ee\u9898\u3002<\/li>\n<li>\u542f\u7528\u5185\u5b58\u6dd8\u6c70\u7b56\u7565\u3002\u542f\u7528Redis\u7684\u5185\u5b58\u6dd8\u6c70\u7b56\u7565\uff0c\u4f8b\u5982LRU\uff08Least Recently Used\uff0c\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\uff0c\u4ee5\u4fbf\u5728\u5185\u5b58\u4e0d\u8db3\u65f6\u81ea\u52a8\u6dd8\u6c70\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6570\u636e\uff0c\u9632\u6b62\u5927Key\u957f\u65f6\u95f4\u5360\u7528\u5185\u5b58\u3002<\/li>\n<li>\u6570\u636e\u5206\u7247\u3002\u4f8b\u5982\u4f7f\u7528Redis Cluster\u5c06\u6570\u636e\u5206\u6563\u5230\u591a\u4e2aRedis\u5b9e\u4f8b\uff0c\u4ee5\u51cf\u8f7b\u5355\u4e2a\u5b9e\u4f8b\u7684\u8d1f\u62c5\uff0c\u964d\u4f4e\u5927Key\u95ee\u9898\u7684\u98ce\u9669\u3002<\/li>\n<li>\u5220\u9664\u5927key\u3002\u4f7f\u7528UNLINK\u547d\u4ee4\u5220\u9664\u5927key\uff0cUNLINK\u547d\u4ee4\u662fDEL\u547d\u4ee4\u7684\u5f02\u6b65\u7248\u672c\uff0c\u5b83\u53ef\u4ee5\u5728\u540e\u53f0\u5220\u9664Key\uff0c\u907f\u514d\u963b\u585eRedis\u5b9e\u4f8b\u3002<\/li>\n<\/ol>\n<h2>6. 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