{"id":128395,"date":"2024-10-26T13:49:15","date_gmt":"2024-10-26T05:49:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128395\/"},"modified":"2024-10-26T13:49:16","modified_gmt":"2024-10-26T05:49:16","slug":"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e8%87%aa%e5%8b%95%e4%ba%8b%e5%8b%99%e6%8e%a7%e5%88%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128395\/","title":{"rendered":"Redis \u5be6\u73fe\u7684\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236"},"content":{"rendered":"<h1 id=\"redis-%e5%af%a6%e7%8f%be%e7%9a%84%e8%87%aa%e5%8b%95%e4%ba%8b%e5%8b%99%e6%8e%a7%e5%88%b6-hQWXzfjUFp\">Redis \u5be6\u73fe\u7684\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u81f3\u95dc\u91cd\u8981\u3002Redis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u56e0\u5176\u5feb\u901f\u7684\u6578\u64da\u5b58\u53d6\u901f\u5ea6\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002\u7136\u800c\uff0c\u5c0d\u65bc\u9700\u8981\u4e8b\u52d9\u63a7\u5236\u7684\u61c9\u7528\u5834\u666f\uff0cRedis \u7684\u539f\u751f\u652f\u6301\u4e26\u4e0d\u5982\u50b3\u7d71\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u90a3\u6a23\u5b8c\u5584\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e4%ba%8b%e5%8b%99%e6%a9%9f%e5%88%b6-hQWXzfjUFp\">Redis \u7684\u4e8b\u52d9\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u7684\u4e8b\u52d9\u6a5f\u5236\uff0c\u901a\u904e MULTI\u3001EXEC\u3001WATCH \u548c DISCARD \u547d\u4ee4\u4f86\u5be6\u73fe\u3002\u9019\u4e9b\u547d\u4ee4\u5141\u8a31\u7528\u6236\u5c07\u591a\u500b\u64cd\u4f5c\u6253\u5305\u5728\u4e00\u8d77\uff0c\u4e26\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\u57f7\u884c\u3002<\/p>\n<ul>\n<li><strong>MULTI<\/strong>: \u958b\u59cb\u4e00\u500b\u4e8b\u52d9\u3002<\/li>\n<li><strong>EXEC<\/strong>: \u57f7\u884c\u4e8b\u52d9\u4e2d\u7684\u6240\u6709\u547d\u4ee4\u3002<\/li>\n<li><strong>WATCH<\/strong>: \u76e3\u8996\u4e00\u500b\u6216\u591a\u500b\u9375\uff0c\u7576\u9019\u4e9b\u9375\u5728\u4e8b\u52d9\u57f7\u884c\u524d\u88ab\u4fee\u6539\u6642\uff0c\u4e8b\u52d9\u5c07\u88ab\u53d6\u6d88\u3002<\/li>\n<li><strong>DISCARD<\/strong>: \u53d6\u6d88\u4e8b\u52d9\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%87%aa%e5%8b%95%e4%ba%8b%e5%8b%99%e6%8e%a7%e5%88%b6%e7%9a%84%e5%af%a6%e7%8f%be-hQWXzfjUFp\">\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236\u7684\u5be6\u73fe<\/h2>\n<p>\u5728 Redis \u4e2d\u5be6\u73fe\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236\u7684\u95dc\u9375\u5728\u65bc\u4f7f\u7528 WATCH \u547d\u4ee4\u4f86\u76e3\u8996\u95dc\u9375\u6578\u64da\uff0c\u4e26\u5728\u6578\u64da\u8b8a\u66f4\u6642\u81ea\u52d5\u56de\u6efe\u4e8b\u52d9\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 Redis \u4e2d\u5be6\u73fe\u9019\u4e00\u904e\u7a0b\uff1a<\/p>\n<pre><code>redis-cli\n# \u958b\u59cb\u4e8b\u52d9\nMULTI\n# \u8a2d\u7f6e\u9375\u503c\nSET key1 \"value1\"\nSET key2 \"value2\"\n# \u76e3\u8996 key1\nWATCH key1\n# \u5617\u8a66\u57f7\u884c\u4e8b\u52d9\nEXEC\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u7576\u6211\u5011\u57f7\u884c EXEC \u547d\u4ee4\u6642\uff0cRedis \u6703\u6aa2\u67e5 key1 \u662f\u5426\u88ab\u4fee\u6539\u3002\u5982\u679c key1 \u5728\u4e8b\u52d9\u57f7\u884c\u524d\u88ab\u5176\u4ed6\u5ba2\u6236\u7aef\u4fee\u6539\uff0c\u5247 EXEC \u5c07\u8fd4\u56de nil\uff0c\u8868\u793a\u4e8b\u52d9\u5931\u6557\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-lua-%e8%85%b3%e6%9c%ac%e9%80%b2%e8%a1%8c%e8%87%aa%e5%8b%95%e4%ba%8b%e5%8b%99%e6%8e%a7%e5%88%b6-hQWXzfjUFp\">\u4f7f\u7528 Lua \u8173\u672c\u9032\u884c\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236<\/h2>\n<p>\u9664\u4e86\u4f7f\u7528\u539f\u751f\u7684\u4e8b\u52d9\u547d\u4ee4\u5916\uff0cRedis \u9084\u652f\u6301 Lua \u8173\u672c\uff0c\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\u57f7\u884c\u591a\u500b\u547d\u4ee4\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u591a\u500b\u547d\u4ee4\u4e4b\u9593\u51fa\u73fe\u7af6\u722d\u689d\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Lua \u8173\u672c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>redis-cli\nEVAL \"if redis.call('GET', KEYS[1]) == ARGV[1] then return redis.call('SET', KEYS[2], ARGV[2]) else return nil end\" 2 key1 key2 \"value1\" \"value2\"\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u6aa2\u67e5 key1 \u7684\u503c\u662f\u5426\u70ba &#8220;value1&#8243;\uff0c\u5982\u679c\u662f\uff0c\u5247\u5c07 key2 \u8a2d\u7f6e\u70ba &#8220;value2&#8243;\u3002\u9019\u6a23\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u7684\uff0c\u907f\u514d\u4e86\u5728\u591a\u500b\u5ba2\u6236\u7aef\u4e4b\u9593\u7684\u7af6\u722d\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-hQWXzfjUFp\">\u7d50\u8ad6<\/h2>\n<p>Redis \u63d0\u4f9b\u7684\u4e8b\u52d9\u63a7\u5236\u96d6\u7136\u4e0d\u5982\u50b3\u7d71\u6578\u64da\u5eab\u90a3\u6a23\u5f37\u5927\uff0c\u4f46\u901a\u904e\u5408\u7406\u7684\u4f7f\u7528 MULTI\u3001EXEC \u548c WATCH \u547d\u4ee4\uff0c\u4ee5\u53ca Lua \u8173\u672c\uff0c\u6211\u5011\u4ecd\u7136\u53ef\u4ee5\u5be6\u73fe\u6709\u6548\u7684\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236\u3002\u9019\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\u5834\u666f\u4f86\u8aaa\uff0c\u7121\u7591\u662f\u4e00\u500b\u91cd\u8981\u7684\u6280\u8853\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u4f7f\u7528 Redis \u9032\u884c\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u96a8\u6642\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u5be6\u73fe\u7684\u81ea\u52d5\u4e8b\u52d9\u63a7\u5236\uff0c\u63d0\u5347\u6578\u64da\u4e00\u81f4\u6027\u8207\u6027\u80fd\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\uff0c\u78ba\u4fdd\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\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-128395","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128395","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=128395"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128395\/revisions"}],"predecessor-version":[{"id":128396,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128395\/revisions\/128396"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}