{"id":174779,"date":"2024-11-07T23:41:21","date_gmt":"2024-11-07T15:41:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174779\/"},"modified":"2024-11-07T23:41:22","modified_gmt":"2024-11-07T15:41:22","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e5%a4%9a%e7%b7%9a%e7%a8%8b%e9%81%8e%e6%9c%9f%e6%8e%a7%e5%88%b6%ef%bc%88redis%e9%81%8e%e6%9c%9f-%e5%a4%9a%e7%b7%9a%e7%a8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174779\/","title":{"rendered":"\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u591a\u7dda\u7a0b\u904e\u671f\u63a7\u5236\uff08redis\u904e\u671f \u591a\u7dda\u7a0b\uff09"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8redis%e5%af%a6%e7%8f%be%e5%a4%9a%e7%b7%9a%e7%a8%8b%e9%81%8e%e6%9c%9f%e6%8e%a7%e5%88%b6%ef%bc%88redis%e9%81%8e%e6%9c%9f-%e5%a4%9a%e7%b7%9a%e7%a8%8b%ef%bc%89-GfhmdrwBkj\">\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u591a\u7dda\u7a0b\u904e\u671f\u63a7\u5236\uff08redis\u904e\u671f 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id=\"redis%e7%9a%84%e9%81%8e%e6%9c%9f%e6%a9%9f%e5%88%b6-GfhmdrwBkj\">Redis\u7684\u904e\u671f\u6a5f\u5236<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u5f37\u5927\u7684\u904e\u671f\u63a7\u5236\u529f\u80fd\u3002\u6bcf\u500b\u9375\u90fd\u53ef\u4ee5\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\uff0c\u7576\u6642\u9593\u5230\u9054\u6642\uff0c\u8a72\u9375\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u4e00\u7279\u6027\u4f7f\u5f97Redis\u975e\u5e38\u9069\u5408\u7528\u65bc\u7de9\u5b58\u5834\u666f\uff0c\u56e0\u70ba\u5b83\u80fd\u5920\u81ea\u52d5\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u3002<\/p>\n<p>Redis\u7684\u904e\u671f\u6a5f\u5236\u4e3b\u8981\u6709\u5169\u7a2e\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u6642\u522a\u9664\uff1a<\/strong>Redis\u6703\u5b9a\u671f\u6aa2\u67e5\u904e\u671f\u7684\u9375\uff0c\u4e26\u5c07\u5176\u522a\u9664\u3002<\/li>\n<li><strong>\u60f0\u6027\u522a\u9664\uff1a<\/strong>\u7576\u8a2a\u554f\u4e00\u500b\u9375\u6642\uff0cRedis\u6703\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u904e\u671f\uff0c\u5982\u679c\u904e\u671f\u5247\u522a\u9664\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a4%9a%e7%b7%9a%e7%a8%8b%e7%92%b0%e5%a2%83%e4%b8%ad%e7%9a%84%e9%81%8e%e6%9c%9f%e6%8e%a7%e5%88%b6%e6%8c%91%e6%88%b0-GfhmdrwBkj\">\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u904e\u671f\u63a7\u5236\u6311\u6230<\/h2>\n<p>\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0c\u904e\u671f\u63a7\u5236\u7684\u6311\u6230\u4e3b\u8981\u4f86\u81ea\u65bc\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u7af6\u722d\u689d\u4ef6\u3002\u7576\u591a\u500b\u7dda\u7a0b\u540c\u6642\u8a2a\u554f\u548c\u4fee\u6539Redis\u4e2d\u7684\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u7af6\u722d\uff1a\u591a\u500b\u7dda\u7a0b\u53ef\u80fd\u540c\u6642\u5617\u8a66\u8a2d\u7f6e\u6216\u522a\u9664\u540c\u4e00\u500b\u9375\u3002<\/li>\n<li>\u904e\u671f\u6642\u9593\u4e0d\u4e00\u81f4\uff1a\u4e0d\u540c\u7dda\u7a0b\u53ef\u80fd\u5c0d\u540c\u4e00\u9375\u8a2d\u7f6e\u4e0d\u540c\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e7%9a%84watch%e5%91%bd%e4%bb%a4%e5%af%a6%e7%8f%be%e9%81%8e%e6%9c%9f%e6%8e%a7%e5%88%b6-GfhmdrwBkj\">\u4f7f\u7528Redis\u7684WATCH\u547d\u4ee4\u5be6\u73fe\u904e\u671f\u63a7\u5236<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a\u4e0a\u8ff0\u554f\u984c\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684WATCH\u547d\u4ee4\u4f86\u5be6\u73fe\u904e\u671f\u63a7\u5236\u3002WATCH\u547d\u4ee4\u53ef\u4ee5\u76e3\u8996\u4e00\u500b\u6216\u591a\u500b\u9375\uff0c\u7576\u9019\u4e9b\u9375\u88ab\u5176\u4ed6\u7dda\u7a0b\u4fee\u6539\u6642\uff0c\u7576\u524d\u7684\u4e8b\u52d9\u5c07\u88ab\u4e2d\u6b62\u3002<\/p>\n<pre><code>\nWATCH key\n\/\/ \u7372\u53d6\u7576\u524d\u503c\ncurrentValue = redis.get(key)\n\/\/ \u8a2d\u7f6e\u65b0\u7684\u904e\u671f\u6642\u9593\nredis.multi()\nredis.set(key, newValue, 'EX', newExpireTime)\nredis.exec()\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u9996\u5148\u4f7f\u7528WATCH\u547d\u4ee4\u76e3\u8996\u9375\uff0c\u7136\u5f8c\u7372\u53d6\u7576\u524d\u503c\u3002\u63a5\u8457\uff0c\u4f7f\u7528MULTI\u547d\u4ee4\u958b\u59cb\u4e00\u500b\u4e8b\u52d9\uff0c\u8a2d\u7f6e\u65b0\u7684\u503c\u548c\u904e\u671f\u6642\u9593\uff0c\u6700\u5f8c\u4f7f\u7528EXEC\u547d\u4ee4\u63d0\u4ea4\u4e8b\u52d9\u3002\u5982\u679c\u5728\u6b64\u904e\u7a0b\u4e2d\uff0c\u5176\u4ed6\u7dda\u7a0b\u4fee\u6539\u4e86\u8a72\u9375\uff0c\u5247EXEC\u547d\u4ee4\u5c07\u5931\u6557\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u8981\u91cd\u8a66\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8lua%e8%85%b3%e6%9c%ac%e5%af%a6%e7%8f%be%e5%8e%9f%e5%ad%90%e6%93%8d%e4%bd%9c-GfhmdrwBkj\">\u4f7f\u7528Lua\u8173\u672c\u5be6\u73fe\u539f\u5b50\u64cd\u4f5c<\/h2>\n<p>\u53e6\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6848\u662f\u4f7f\u7528Lua\u8173\u672c\u4f86\u5be6\u73fe\u539f\u5b50\u64cd\u4f5c\u3002Redis\u652f\u6301\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884cLua\u8173\u672c\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff0c\u907f\u514d\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u7af6\u722d\u689d\u4ef6\u3002<\/p>\n<pre><code>\nlocal currentValue = redis.call('GET', KEYS[1])\nif currentValue then\n    redis.call('SET', KEYS[1], ARGV[1], 'EX', ARGV[2])\nend\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5Lua\u8173\u672c\u4e2d\uff0c\u9996\u5148\u7372\u53d6\u9375\u7684\u7576\u524d\u503c\uff0c\u5982\u679c\u8a72\u503c\u5b58\u5728\uff0c\u5247\u8a2d\u7f6e\u65b0\u7684\u503c\u548c\u904e\u671f\u6642\u9593\u3002\u9019\u6a23\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u7684\uff0c\u80fd\u5920\u6709\u6548\u907f\u514d\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-GfhmdrwBkj\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0c\u5229\u7528Redis\u5be6\u73fe\u904e\u671f\u63a7\u5236\u9700\u8981\u8003\u616e\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u7af6\u722d\u689d\u4ef6\u3002\u901a\u904e\u4f7f\u7528WATCH\u547d\u4ee4\u548cLua\u8173\u672c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u7684\u751f\u547d\u9031\u671f\uff0c\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u548c\u4e00\u81f4\u6027\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u61c9\u7528\u7a0b\u5f0f\u7684\u6027\u80fd\uff0c\u9084\u80fd\u5920\u6e1b\u5c11\u56e0\u6578\u64da\u4e0d\u4e00\u81f4\u800c\u5c0e\u81f4\u7684\u932f\u8aa4\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528Redis\u5be6\u73fe\u591a\u7dda\u7a0b\u904e\u671f\u63a7\u5236\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u8cc7\u6e90\u7684\u53ca\u6642\u91cb\u653e\u8207\u66f4\u65b0\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-174779","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174779","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=174779"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174779\/revisions"}],"predecessor-version":[{"id":174780,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174779\/revisions\/174780"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=174779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=174779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=174779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}