{"id":151503,"date":"2024-11-01T17:39:18","date_gmt":"2024-11-01T09:39:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/151503\/"},"modified":"2024-11-01T17:39:19","modified_gmt":"2024-11-01T09:39:19","slug":"%e7%99%be%e8%b6%8a%e4%bd%bf%e7%94%a8redis%e9%8e%96lua%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e7%b3%bb%e7%b5%b1%e5%ae%89%e5%85%a8%ef%bc%88redis%e9%8e%96lua%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/151503\/","title":{"rendered":"\u767e\u8d8a\u4f7f\u7528Redis\u9396Lua\u5be6\u73fe\u5206\u5e03\u5f0f\u7cfb\u7d71\u5b89\u5168\uff08redis\u9396lua\uff09"},"content":{"rendered":"<h1 id=\"%e7%99%be%e8%b6%8a%e4%bd%bf%e7%94%a8redis%e9%8e%96lua%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e7%b3%bb%e7%b5%b1%e5%ae%89%e5%85%a8-bVPoePDpUc\">\u767e\u8d8a\u4f7f\u7528Redis\u9396Lua\u5be6\u73fe\u5206\u5e03\u5f0f\u7cfb\u7d71\u5b89\u5168<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b89\u5168\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u5fae\u670d\u52d9\u67b6\u69cb\u7684\u666e\u53ca\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u591a\u500b\u670d\u52d9\u4e4b\u9593\u7684\u8cc7\u6e90\u7af6\u722d\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u9396\u7684\u529f\u80fd\u4f86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u9396\u548cLua\u8173\u672c\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u7cfb\u7d71\u7684\u5b89\u5168\u6027\u3002<\/p>\n<h2 id=\"redis%e9%8e%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-bVPoePDpUc\">Redis\u9396\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u5c0d\u5171\u4eab\u8cc7\u6e90\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u5b83\u53ef\u4ee5\u9632\u6b62\u591a\u500b\u9032\u7a0b\u540c\u6642\u8a2a\u554f\u540c\u4e00\u8cc7\u6e90\uff0c\u5f9e\u800c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002Redis\u9396\u7684\u5be6\u73fe\u901a\u5e38\u57fa\u65bcSETNX\u547d\u4ee4\uff0c\u8a72\u547d\u4ee4\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u6642\u624d\u6703\u8a2d\u7f6e\u9375\u7684\u503c\u3002\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5728\u5206\u5e03\u5f0f\u74b0\u5883\u4e2d\u5be6\u73fe\u4e92\u65a5\u9396\u3002<\/p>\n<h3 id=\"redis%e9%8e%96%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-bVPoePDpUc\">Redis\u9396\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<ul>\n<li>\u7576\u4e00\u500b\u9032\u7a0b\u9700\u8981\u7372\u53d6\u9396\u6642\uff0c\u5b83\u6703\u5617\u8a66\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u552f\u4e00\u7684\u9396\u9375\u3002<\/li>\n<li>\u5982\u679cSETNX\u6210\u529f\uff0c\u5247\u8a72\u9032\u7a0b\u7372\u5f97\u9396\uff0c\u4e26\u53ef\u4ee5\u5b89\u5168\u5730\u8a2a\u554f\u5171\u4eab\u8cc7\u6e90\u3002<\/li>\n<li>\u5982\u679cSETNX\u5931\u6557\uff0c\u5247\u8868\u793a\u9396\u5df2\u88ab\u5176\u4ed6\u9032\u7a0b\u7372\u53d6\uff0c\u8a72\u9032\u7a0b\u9700\u8981\u7b49\u5f85\u6216\u91cd\u8a66\u3002<\/li>\n<li>\u9032\u7a0b\u5728\u5b8c\u6210\u64cd\u4f5c\u5f8c\uff0c\u5fc5\u9808\u522a\u9664\u9396\u9375\u4ee5\u91cb\u653e\u9396\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac%e4%be%86%e5%a2%9e%e5%bc%b7redis%e9%8e%96%e7%9a%84%e5%ae%89%e5%85%a8%e6%80%a7-bVPoePDpUc\">\u4f7f\u7528Lua\u8173\u672c\u4f86\u589e\u5f37Redis\u9396\u7684\u5b89\u5168\u6027<\/h2>\n<p>\u96d6\u7136Redis\u9396\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u8cc7\u6e90\u8a2a\u554f\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u6b7b\u9396\u6216\u9396\u672a\u91cb\u653e\u7684\u60c5\u6cc1\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Lua\u8173\u672c\u4f86\u5be6\u73fe\u66f4\u5b89\u5168\u7684\u9396\u6a5f\u5236\u3002Lua\u8173\u672c\u5728Redis\u4e2d\u662f\u539f\u5b50\u57f7\u884c\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u8173\u672c\u57f7\u884c\u671f\u9593\uff0c\u5176\u4ed6\u547d\u4ee4\u7121\u6cd5\u5e72\u64fe\u3002<\/p>\n<h3 id=\"lua%e8%85%b3%e6%9c%ac%e5%af%a6%e7%8f%beredis%e9%8e%96-bVPoePDpUc\">Lua\u8173\u672c\u5be6\u73feRedis\u9396<\/h3>\n<pre><code>\n-- Lua\u8173\u672c\uff1a\u7372\u53d6\u9396\nlocal lock_key = KEYS[1]\nlocal lock_value = ARGV[1]\nlocal expire_time = ARGV[2]\n\nif redis.call(\"SETNX\", lock_key, lock_value) == 1 then\n    redis.call(\"EXPIRE\", lock_key, expire_time)\n    return 1\nelse\n    return 0\nend\n<\/code><\/pre>\n<p>\u4e0a\u8ff0Lua\u8173\u672c\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u9996\u5148\uff0c\u6aa2\u67e5\u9396\u9375\u662f\u5426\u5b58\u5728\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u9396\u9375\u4e26\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002<\/li>\n<li>\u5982\u679c\u9396\u6210\u529f\u7372\u53d6\uff0c\u8fd4\u56de1\uff1b\u5426\u5247\u8fd4\u56de0\u3002<\/li>\n<\/ul>\n<h3 id=\"%e9%87%8b%e6%94%be%e9%8e%96%e7%9a%84lua%e8%85%b3%e6%9c%ac-bVPoePDpUc\">\u91cb\u653e\u9396\u7684Lua\u8173\u672c<\/h3>\n<pre><code>\n-- Lua\u8173\u672c\uff1a\u91cb\u653e\u9396\nlocal lock_key = KEYS[1]\nlocal lock_value = ARGV[1]\n\nif redis.call(\"GET\", lock_key) == lock_value then\n    return redis.call(\"DEL\", lock_key)\nelse\n    return 0\nend\n<\/code><\/pre>\n<p>\u91cb\u653e\u9396\u7684Lua\u8173\u672c\u78ba\u4fdd\u53ea\u6709\u6301\u6709\u9396\u7684\u9032\u7a0b\u624d\u80fd\u91cb\u653e\u9396\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u8aa4\u522a\u9664\u9396\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-bVPoePDpUc\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Redis\u9396\u548cLua\u8173\u672c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\u7684\u8cc7\u6e90\u7af6\u722d\u554f\u984c\uff0c\u4e26\u63d0\u9ad8\u7cfb\u7d71\u7684\u5b89\u5168\u6027\u3002\u901a\u904e\u539f\u5b50\u64cd\u4f5c\uff0c\u6211\u5011\u53ef\u4ee5\u78ba\u4fdd\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u904e\u7a0b\u4e0d\u6703\u53d7\u5230\u5176\u4ed6\u64cd\u4f5c\u7684\u5e72\u64fe\uff0c\u5f9e\u800c\u4fdd\u8b77\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5728\u8a2d\u8a08\u5206\u5e03\u5f0f\u7cfb\u7d71\u6642\uff0c\u5408\u7406\u4f7f\u7528Redis\u9396\u548cLua\u8173\u672c\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u767e\u8d8a\u5982\u4f55\u5229\u7528Redis\u9396\u548cLua\u8173\u672c\u5be6\u73fe\u5206\u5e03\u5f0f\u7cfb\u7d71\u7684\u5b89\u5168\u6027\uff0c\u63d0\u5347\u6578\u64da\u4e00\u81f4\u6027\u8207\u7cfb\u7d71\u7a69\u5b9a\u6027\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-151503","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/151503","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=151503"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/151503\/revisions"}],"predecessor-version":[{"id":151504,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/151503\/revisions\/151504"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=151503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=151503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=151503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}