{"id":67790,"date":"2025-05-10T09:51:14","date_gmt":"2025-05-10T01:51:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/67790\/"},"modified":"2025-05-10T09:51:14","modified_gmt":"2025-05-10T01:51:14","slug":"redis%e6%a8%a1%e7%b3%8a%e6%89%b9%e9%87%8f%e5%88%a0%e9%99%a4key%e7%9a%84%e6%96%b9%e6%b3%95-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/67790\/","title":{"rendered":"redis\u6a21\u7cca\u6279\u91cf\u5220\u9664key\u7684\u65b9\u6cd5"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>redis\u6a21\u7cca\u6279\u91cf\u5220\u9664key\u7684\u65b9\u6cd5<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0cgolang\u5b66\u4e60\u7f51\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aredis\u6a21\u7cca\u6279\u91cf\u5220\u9664key\u7684\u65b9\u6cd5\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\u5220\u9664\u3001key\u3001redis\u6a21\u7cca\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n<h2>\u4e00\u3001\u547d\u4ee4\u884c\u5220\u9664<\/h2>\n<pre>redis-cli -h 172.18.255.99 -p 6379 -n 6 -a 123456 KEYS \"websocket127.0.0.1:5*\" | xargs redis-cli -h 172.18.255.99 -p 6379 -n 6 -a 123456 DEL<\/pre>\n<ul>\n<li>-h\uff1aredis\u5730\u5740<\/li>\n<li>-p\uff1aredis\u7aef\u53e3<\/li>\n<li>-n\uff1areids\u5e93<\/li>\n<li>-a\uff1aredis\u5bc6\u7801<\/li>\n<\/ul>\n<p><strong>Redis \u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u66b4\u529b\u7684\u6307\u4ee4 keys \u7528\u6765\u5217\u51fa\u6240\u6709\u6ee1\u8db3\u7279\u5b9a\u6b63\u5219\u5b57\u7b26\u4e32\u89c4\u5219\u7684 key\u3002<\/strong><\/p>\n<blockquote>\n<p>\u6ce8\uff1a\u8fd9\u4e2a\u6307\u4ee4\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u63d0\u4f9b\u4e00\u4e2a\u7b80\u5355\u7684\u6b63\u5219\u5b57\u7b26\u4e32\u5373\u53ef\uff0c\u4f46\u662f\u6709\u5f88\u660e\u663e\u7684\u4e24\u4e2a\u7f3a\u70b9\u3002<\/p>\n<\/blockquote>\n<ul>\n<li>\u6ca1\u6709 offset\u3001limit \u53c2\u6570\uff0c\u4e00\u6b21\u6027\u5410\u51fa\u6240\u6709\u6ee1\u8db3\u6761\u4ef6\u7684 key\uff0c\u4e07\u4e00\u5b9e\u4f8b\u4e2d\u6709\u51e0\u767e w \u4e2a key \u6ee1\u8db3\u6761\u4ef6\uff0c<\/li>\n<li>\u5f53\u4f60\u770b\u5230\u6ee1\u5c4f\u7684\u5b57\u7b26\u4e32\u5237\u7684\u6ca1\u6709\u5c3d\u5934\u65f6\uff0c\u4f60\u5c31\u77e5\u9053\u96be\u53d7\u4e86\u3002<\/li>\n<li>keys \u7b97\u6cd5\u662f\u904d\u5386\u7b97\u6cd5\uff0c\u590d\u6742\u5ea6\u662f O(n)\uff0c\u5982\u679c\u5b9e\u4f8b\u4e2d\u6709\u5343\u4e07\u7ea7\u4ee5\u4e0a\u7684 key\uff0c\u8fd9\u4e2a\u6307\u4ee4\u5c31\u4f1a\u5bfc\u81f4 Redis \u670d\u52a1\u5361\u987f\uff0c<\/li>\n<li>\u6240\u6709\u8bfb\u5199 Redis \u7684\u5176\u5b83\u7684\u6307\u4ee4\u90fd\u4f1a\u88ab\u5ef6\u540e\u751a\u81f3\u4f1a\u8d85\u65f6\u62a5\u9519\uff0c<\/li>\n<li>\u56e0\u4e3a Redis \u662f\u5355\u7ebf\u7a0b\u7a0b\u5e8f\uff0c\u987a\u5e8f\u6267\u884c\u6240\u6709\u6307\u4ee4\uff0c\u5176\u5b83\u6307\u4ee4\u5fc5\u987b\u7b49\u5230\u5f53\u524d\u7684 keys \u6307\u4ee4\u6267\u884c\u5b8c\u4e86\u624d\u53ef\u4ee5\u7ee7\u7eed\u3002<\/li>\n<\/ul>\n<blockquote>\n<p>\u6240\u4ee5\u5efa\u8bae\u751f\u4ea7\u73af\u5883\u5c4f\u853dkeys\u547d\u4ee4<\/p>\n<\/blockquote>\n<p><strong>scan \u76f8\u6bd4 keys \u5177\u5907\u6709\u4ee5\u4e0b\u7279\u70b9:<\/strong><\/p>\n<ul>\n<li>\u590d\u6742\u5ea6\u867d\u7136\u4e5f\u662f O(n)\uff0c\u4f46\u662f\u5b83\u662f\u901a\u8fc7\u6e38\u6807\u5206\u6b65\u8fdb\u884c\u7684\uff0c\u4e0d\u4f1a\u963b\u585e\u7ebf\u7a0b;<\/li>\n<li>\u63d0\u4f9b limit \u53c2\u6570\uff0c\u53ef\u4ee5\u63a7\u5236\u6bcf\u6b21\u8fd4\u56de\u7ed3\u679c\u7684\u6700\u5927\u6761\u6570\uff0climit \u53ea\u662f\u5bf9\u589e\u91cf\u5f0f\u8fed\u4ee3\u547d\u4ee4\u7684\u4e00\u79cd\u63d0\u793a(hint)\uff0c\u8fd4\u56de\u7684\u7ed3\u679c\u53ef\u591a\u53ef\u5c11;<\/li>\n<li>\u540c keys \u4e00\u6837\uff0c\u5b83\u4e5f\u63d0\u4f9b\u6a21\u5f0f\u5339\u914d\u529f\u80fd;<\/li>\n<li>\u670d\u52a1\u5668\u4e0d\u9700\u8981\u4e3a\u6e38\u6807\u4fdd\u5b58\u72b6\u6001\uff0c\u6e38\u6807\u7684\u552f\u4e00\u72b6\u6001\u5c31\u662f scan \u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684\u6e38\u6807\u6574\u6570;<\/li>\n<li>\u8fd4\u56de\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u6709\u91cd\u590d\uff0c\u9700\u8981\u5ba2\u6237\u7aef\u53bb\u91cd\u590d\uff0c\u8fd9\u70b9\u975e\u5e38\u91cd\u8981;<\/li>\n<li>\u904d\u5386\u7684\u8fc7\u7a0b\u4e2d\u5982\u679c\u6709\u6570\u636e\u4fee\u6539\uff0c\u6539\u52a8\u540e\u7684\u6570\u636e\u80fd\u4e0d\u80fd\u904d\u5386\u5230\u662f\u4e0d\u786e\u5b9a\u7684;<\/li>\n<li>\u5355\u6b21\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u7a7a\u7684\u5e76\u4e0d\u610f\u5473\u7740\u904d\u5386\u7ed3\u675f\uff0c\u800c\u8981\u770b\u8fd4\u56de\u7684\u6e38\u6807\u503c\u662f\u5426\u4e3a\u96f6<\/li>\n<\/ul>\n<p><strong>KEYS vs SCAN<\/strong><\/p>\n<blockquote>\n<p>\u4e00\u6a23\u90fd\u6703\u6383\u904e\u6240\u6709\u7684 key\uff0cscan \u4e0d\u6703\u963b\u585e\u6574\u500b server\uff0c\u800c\u662f\u8fed\u4ee3\u7684\u6536\u96c6\u7d50\u679c<\/p>\n<\/blockquote>\n<p><strong>DEL vs UNLINK<\/strong><\/p>\n<blockquote>\n<p>\u4e00\u6a23\u90fd\u662f\u522a\u9664 key \uff0c\u5dee\u5225\u5728\u65bc unlink \u662f\u975e\u963b\u585e\u7684\u522a\u9664\uff0c\u6703\u4ee5\u975e\u540c\u6b65\u7684\u65b9\u5f0f\u56de\u6536\u8a18\u61b6\u9ad4<\/p>\n<\/blockquote>\n<p>\u6240\u4ee5\u5bf9\u4e8e\u4e00\u4e2a\u5927\u7684key\u6570\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u501f\u52a9sscan\u4f7f\u7528\u4e0b\u8fb9\u7684\u547d\u4ee4\u53ef\u4ee5\u5b9e\u73b0\u4f18\u96c5\u7684\u6279\u91cf\u5220\u9664\uff1a<\/p>\n<pre>redis-cli -h 172.18.255.99 -p 6379 --scan --pattern users:* | xargs redis-cli -h 172.18.255.99 -p 6379 unlink<\/pre>\n<ul>\n<li>\u7528 scan \u627e\u51fa\u8981\u522a\u7684 key<\/li>\n<li>\u900f\u904e xargs \u50b3\u7d66 unlink \u522a\u6389 key<\/li>\n<\/ul>\n<pre>(error) ERR unknown command 'unlink'<\/pre>\n<p>\u5982\u679c\u51fa\u73b0\u4ee5\u4e0a\u9519\u8bef\uff0c\u8bf4\u660eredis\u7248\u672c\u4e0d\u8db3\uff0c\u4f7f\u7528unlink\u9700\u8981Redis4\u7248\u672c<\/p>\n<p><strong>cluster \u5220\u9664\u6570\u636e<\/strong><\/p>\n<pre>redis-cli -c -p 7000 --scan --pattern \"age_*\" | xargs -L 1 redis-cli -c -p 7000 -n 0 unlink<\/pre>\n<p><strong>\u904d\u5386redis cluster\u5404\u5206\u7247\u5220\u9664<\/strong><\/p>\n<pre>for port in {7000..7005}; do\n    redis-cli -c -p ${port} -h 192.168.31.181 --scan --pattern \"age_*\" | xargs -L 1 redis-cli -h 192.168.31.181 -c -p ${port} -n 0 unlink  \ndone<\/pre>\n<h2>\u4e8c\u3001golang\u4ee3\u7801\u5220\u9664<\/h2>\n<pre>func DeleteRedisKeys(key string) {\n\ttraceId := libra.GenTraceId(context.Background(), nil)\n\tctx := libra.SetTraceId(context.Background(), traceId)\n\t\/\/\u6a21\u7cca\u67e5\u8be2\u6240\u6709\u7b26\u5408\u6761\u4ef6\u7684key\n\twebsocketKeys, _ := commons.GetRedisClient().Keys(ctx, key+\"*\").Result()\n\tif reflect.TypeOf(websocketKeys).Kind() == reflect.Slice {\n\t\tval := reflect.ValueOf(websocketKeys)\n\t\tif val.Len() == 0 {\n\t\t\treturn\n\t\t}\n\t\t\/\/ \u6279\u91cf\u5220\u9664key\n\t\tfor i := 0; i \n<p><strong>\u53c2\u8003\u6587\u6863<\/strong>\uff1a<\/p>\n<p>Redis SCAN\u7684\u4f7f\u7528\uff1a<\/p>\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>redis\u6a21\u7cca\u6279\u91cf\u5220\u9664key\u7684\u65b9\u6cd5 \u6536\u85cf \u5bf9\u4e8e\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0cgolang\u5b66\u4e60\u7f51\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aredis\u6a21\u7cca\u6279\u91cf\u5220\u9664key\u7684\u65b9\u6cd5\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\u5220\u9664\u3001key\u3001redis\u6a21\u7cca\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01 \u4e00\u3001\u547d\u4ee4\u884c\u5220\u9664 redis-cli -h 172.18.255.99 -p 6379 -n 6 -a 123456 KEYS &#8220;websocket127.0.0.1:5*&#8221; | xargs redis-cli -h 172.18.255.99 -p 6379 -n 6 -a 123456 DEL -h\uff1aredis\u5730\u5740 -p\uff1aredis\u7aef\u53e3 -n\uff1areids\u5e93 -a\uff1aredis\u5bc6\u7801 Redis \u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u66b4\u529b\u7684\u6307\u4ee4 keys \u7528\u6765\u5217\u51fa\u6240\u6709\u6ee1\u8db3\u7279\u5b9a\u6b63\u5219\u5b57\u7b26\u4e32\u89c4\u5219\u7684 key\u3002 \u6ce8\uff1a\u8fd9\u4e2a\u6307\u4ee4\u4f7f\u7528\u975e\u5e38\u7b80\u5355\uff0c\u63d0\u4f9b\u4e00\u4e2a\u7b80\u5355\u7684\u6b63\u5219\u5b57\u7b26\u4e32\u5373\u53ef\uff0c\u4f46\u662f\u6709\u5f88\u660e\u663e\u7684\u4e24\u4e2a\u7f3a\u70b9\u3002 \u6ca1\u6709 offset\u3001limit \u53c2\u6570\uff0c\u4e00\u6b21\u6027\u5410\u51fa\u6240\u6709\u6ee1\u8db3\u6761\u4ef6\u7684 key\uff0c\u4e07\u4e00\u5b9e\u4f8b\u4e2d\u6709\u51e0\u767e w \u4e2a key \u6ee1\u8db3\u6761\u4ef6\uff0c \u5f53\u4f60\u770b\u5230\u6ee1\u5c4f\u7684\u5b57\u7b26\u4e32\u5237\u7684\u6ca1\u6709\u5c3d\u5934\u65f6\uff0c\u4f60\u5c31\u77e5\u9053\u96be\u53d7\u4e86\u3002 keys \u7b97\u6cd5\u662f\u904d\u5386\u7b97\u6cd5\uff0c\u590d\u6742\u5ea6\u662f O(n)\uff0c\u5982\u679c\u5b9e\u4f8b\u4e2d\u6709\u5343\u4e07\u7ea7\u4ee5\u4e0a\u7684 key\uff0c\u8fd9\u4e2a\u6307\u4ee4\u5c31\u4f1a\u5bfc\u81f4 Redis \u670d\u52a1\u5361\u987f\uff0c \u6240\u6709\u8bfb\u5199 Redis \u7684\u5176\u5b83\u7684\u6307\u4ee4\u90fd\u4f1a\u88ab\u5ef6\u540e\u751a\u81f3\u4f1a\u8d85\u65f6\u62a5\u9519\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-67790","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=67790"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67790\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=67790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=67790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=67790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}