{"id":98208,"date":"2024-10-21T00:41:17","date_gmt":"2024-10-20T16:41:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98208\/"},"modified":"2024-10-21T00:41:17","modified_gmt":"2024-10-20T16:41:17","slug":"redis-%e5%98%97%e8%a9%a6%e9%87%8b%e6%94%be%e9%8e%96%e5%a4%b1%e6%95%97%e8%a8%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98208\/","title":{"rendered":"Redis \u5617\u8a66\u91cb\u653e\u9396\u5931\u6557\u8a18"},"content":{"rendered":"<h1 id=\"redis-%e5%98%97%e8%a9%a6%e9%87%8b%e6%94%be%e9%8e%96%e5%a4%b1%e6%95%97%e8%a8%98-srRdsKFWNA\">Redis \u5617\u8a66\u91cb\u653e\u9396\u5931\u6557\u8a18<\/h1>\n<p>\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u9396\u7684\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u9632\u6b62\u7af6\u722d\u689d\u4ef6\u7684\u91cd\u8981\u624b\u6bb5\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u898b\u7684\u5c31\u662f\u4f7f\u7528 SETNX \u547d\u4ee4\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u3002\u7136\u800c\uff0c\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e2d\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u6311\u6230\uff0c\u7279\u5225\u662f\u7576\u9396\u7684\u64c1\u6709\u8005\u610f\u5916\u5d29\u6f70\u6216\u51fa\u73fe\u7db2\u7d61\u554f\u984c\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u5617\u8a66\u91cb\u653e\u9396\u5931\u6557\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"redis-%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e7%90%86-srRdsKFWNA\">Redis \u9396\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>Redis \u9396\u7684\u57fa\u672c\u539f\u7406\u662f\u5229\u7528 SETNX \u547d\u4ee4\u4f86\u8a2d\u7f6e\u4e00\u500b\u9375\uff0c\u7576\u9019\u500b\u9375\u4e0d\u5b58\u5728\u6642\uff0c\u8a2d\u7f6e\u6210\u529f\uff0c\u8868\u793a\u7372\u5f97\u9396\uff1b\u5982\u679c\u9375\u5df2\u5b58\u5728\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u6301\u6709\u3002\u4ee5\u4e0b\u662f\u7372\u53d6\u9396\u7684\u57fa\u672c\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n<pre><code>SETNX lock_key unique_lock_value\nEXPIRE lock_key 30\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`lock_key` \u662f\u9396\u7684\u540d\u7a31\uff0c`unique_lock_value` \u662f\u4e00\u500b\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u7528\u65bc\u8b58\u5225\u9396\u7684\u64c1\u6709\u8005\u3002\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u662f\u70ba\u4e86\u9632\u6b62\u6b7b\u9396\u7684\u60c5\u6cc1\u767c\u751f\u3002<\/p>\n<h2 id=\"%e9%87%8b%e6%94%be%e9%8e%96%e7%9a%84%e6%8c%91%e6%88%b0-srRdsKFWNA\">\u91cb\u653e\u9396\u7684\u6311\u6230<\/h2>\n<p>\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e2d\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e7e\u500b\u554f\u984c\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u64c1\u6709\u8005\u5d29\u6f70\uff1a<\/strong>\u5982\u679c\u6301\u6709\u9396\u7684\u9032\u7a0b\u5728\u91cb\u653e\u9396\u4e4b\u524d\u5d29\u6f70\uff0c\u5247\u9396\u5c07\u7121\u6cd5\u88ab\u91cb\u653e\u3002<\/li>\n<li><strong>\u7db2\u7d61\u554f\u984c\uff1a<\/strong>\u5728\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u7db2\u7d61\u5ef6\u9072\u6216\u6545\u969c\u53ef\u80fd\u5c0e\u81f4\u91cb\u653e\u9396\u7684\u8acb\u6c42\u672a\u80fd\u5230\u9054 Redis \u670d\u52d9\u5668\u3002<\/li>\n<li><strong>\u932f\u8aa4\u7684\u9396\u64c1\u6709\u8005\uff1a<\/strong>\u5982\u679c\u91cb\u653e\u9396\u7684\u8acb\u6c42\u4f86\u81ea\u65bc\u975e\u9396\u64c1\u6709\u8005\uff0c\u5247\u91cb\u653e\u64cd\u4f5c\u5c07\u5931\u6557\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%87%8b%e6%94%be%e9%8e%96%e7%9a%84%e6%ad%a3%e7%a2%ba%e6%96%b9%e5%bc%8f-srRdsKFWNA\">\u91cb\u653e\u9396\u7684\u6b63\u78ba\u65b9\u5f0f<\/h2>\n<p>\u70ba\u4e86\u5b89\u5168\u5730\u91cb\u653e\u9396\uff0c\u61c9\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5728\u91cb\u653e\u9396\u4e4b\u524d\uff0c\u9996\u5148\u6aa2\u67e5\u7576\u524d\u9032\u7a0b\u662f\u5426\u662f\u9396\u7684\u64c1\u6709\u8005\u3002<\/li>\n<li>\u4f7f\u7528 Lua \u8173\u672c\u4f86\u78ba\u4fdd\u539f\u5b50\u6027\u64cd\u4f5c\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u6aa2\u67e5\u548c\u91cb\u653e\u4e4b\u9593\u7684\u7af6\u722d\u689d\u4ef6\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Lua \u8173\u672c\u91cb\u653e\u9396\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nlocal current_value = redis.call(\"GET\", KEYS[1])\nif current_value == ARGV[1] then\n    return redis.call(\"DEL\", KEYS[1])\nelse\n    return 0\nend\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`KEYS[1]` \u662f\u9396\u7684\u540d\u7a31\uff0c`ARGV[1]` \u662f\u9396\u7684\u64c1\u6709\u8005\u6a19\u8b58\u7b26\u3002\u53ea\u6709\u7576\u7576\u524d\u503c\u8207\u64c1\u6709\u8005\u6a19\u8b58\u7b26\u5339\u914d\u6642\uff0c\u624d\u6703\u91cb\u653e\u9396\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-srRdsKFWNA\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u9032\u884c\u9396\u7ba1\u7406\u6642\uff0c\u91cb\u653e\u9396\u7684\u904e\u7a0b\u4e2d\u53ef\u80fd\u6703\u9047\u5230\u591a\u7a2e\u6311\u6230\u3002\u901a\u904e\u6b63\u78ba\u7684\u6aa2\u67e5\u548c\u4f7f\u7528 Lua \u8173\u672c\u4f86\u78ba\u4fdd\u539f\u5b50\u6027\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\u3002\u4e86\u89e3\u9019\u4e9b\u6311\u6230\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\uff0c\u5c0d\u65bc\u958b\u767c\u9ad8\u6548\u4e14\u53ef\u9760\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis \u5617\u8a66\u91cb\u653e\u9396\u5931\u6557\u8a18\uff0c\u63a2\u8a0e\u9396\u7ba1\u7406\u4e2d\u7684\u6311\u6230\u8207\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-98208","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=98208"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98208\/revisions"}],"predecessor-version":[{"id":98209,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98208\/revisions\/98209"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}