{"id":97398,"date":"2024-10-20T17:34:16","date_gmt":"2024-10-20T09:34:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/97398\/"},"modified":"2024-10-20T17:34:17","modified_gmt":"2024-10-20T09:34:17","slug":"redis-%e8%a7%a3%e6%b1%ba%e5%a4%9a%e7%b7%9a%e7%a8%8b%e9%81%8e%e6%9c%9f%e5%95%8f%e9%a1%8c%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\/97398\/","title":{"rendered":"Redis \u89e3\u6c7a\u591a\u7dda\u7a0b\u904e\u671f\u554f\u984c\uff08redis\u904e\u671f \u591a\u7dda\u7a0b\uff09"},"content":{"rendered":"<h1 id=\"redis-%e8%a7%a3%e6%b1%ba%e5%a4%9a%e7%b7%9a%e7%a8%8b%e9%81%8e%e6%9c%9f%e5%95%8f%e9%a1%8c%ef%bc%88redis%e9%81%8e%e6%9c%9f-%e5%a4%9a%e7%b7%9a%e7%a8%8b%ef%bc%89-rjNlpFSEel\">Redis \u89e3\u6c7a\u591a\u7dda\u7a0b\u904e\u671f\u554f\u984c\uff08redis\u904e\u671f \u591a\u7dda\u7a0b\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u5834\u666f\u3002\u96a8\u8457\u591a\u7dda\u7a0b\u61c9\u7528\u7684\u666e\u53ca\uff0c\u5982\u4f55\u6709\u6548\u7ba1\u7406 Redis \u4e2d\u7684\u904e\u671f\u9375\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e0b\u7684\u904e\u671f\u554f\u984c\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e9%81%8e%e6%9c%9f%e6%a9%9f%e5%88%b6-rjNlpFSEel\">Redis \u7684\u904e\u671f\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u6a5f\u5236\u4f86\u7ba1\u7406\u9375\u7684\u751f\u547d\u9031\u671f\uff1a<\/p>\n<ul>\n<li><strong>\u5b9a\u6642\u522a\u9664\uff1a<\/strong>Redis \u6703\u5728\u9375\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u5f8c\uff0c\u5b9a\u671f\u6aa2\u67e5\u4e26\u522a\u9664\u904e\u671f\u7684\u9375\u3002\u9019\u662f\u901a\u904e\u4e00\u500b\u5b9a\u6642\u4efb\u52d9\u4f86\u5be6\u73fe\u7684\uff0c\u901a\u5e38\u6bcf 100 \u6beb\u79d2\u6aa2\u67e5\u4e00\u6b21\u3002<\/li>\n<li><strong>\u60f0\u6027\u522a\u9664\uff1a<\/strong>\u7576\u5ba2\u6236\u7aef\u8a2a\u554f\u4e00\u500b\u9375\u6642\uff0cRedis \u6703\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u904e\u671f\uff0c\u5982\u679c\u904e\u671f\u5247\u522a\u9664\u8a72\u9375\u3002<\/li>\n<\/ul>\n<p>\u9019\u5169\u7a2e\u6a5f\u5236\u7684\u7d50\u5408\u4f7f\u5f97 Redis \u80fd\u5920\u5728\u5927\u591a\u6578\u60c5\u6cc1\u4e0b\u6709\u6548\u5730\u7ba1\u7406\u904e\u671f\u9375\uff0c\u4f46\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0c\u9019\u4e9b\u6a5f\u5236\u53ef\u80fd\u6703\u5c0e\u81f4\u4e00\u4e9b\u554f\u984c\u3002<\/p>\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%e5%95%8f%e9%a1%8c-rjNlpFSEel\">\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u904e\u671f\u554f\u984c<\/h2>\n<p>\u5728\u591a\u7dda\u7a0b\u61c9\u7528\u4e2d\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u7af6\u722d\u689d\u4ef6\uff1a<\/strong>\u591a\u500b\u7dda\u7a0b\u540c\u6642\u8a2a\u554f\u548c\u4fee\u6539\u540c\u4e00\u500b\u9375\uff0c\u53ef\u80fd\u5c0e\u81f4\u904e\u671f\u6642\u9593\u7684\u8a2d\u7f6e\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u5ef6\u9072\u522a\u9664\uff1a<\/strong>\u7531\u65bc Redis \u7684\u5b9a\u6642\u522a\u9664\u6a5f\u5236\uff0c\u904e\u671f\u9375\u53ef\u80fd\u5728\u4e00\u6bb5\u6642\u9593\u5167\u4ecd\u7136\u5b58\u5728\uff0c\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u61c9\u7528\u7684\u908f\u8f2f\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u6d6a\u8cbb\uff1a<\/strong>\u904e\u671f\u9375\u7684\u5b58\u5728\u6703\u4f54\u7528\u5167\u5b58\u8cc7\u6e90\uff0c\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-rjNlpFSEel\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u904e\u671f\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96-rjNlpFSEel\">1. \u4f7f\u7528\u5206\u5e03\u5f0f\u9396<\/h3>\n<p>\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 Redis \u7684\u5206\u5e03\u5f0f\u9396\u4f86\u78ba\u4fdd\u5c0d\u9375\u7684\u8a2a\u554f\u662f\u4e92\u65a5\u7684\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SET lock_key \"lock\" NX PX 30000\nif (lock_acquired) {\n    \/\/ \u8a2d\u7f6e\u904e\u671f\u6642\u9593\n    EXPIRE my_key 60\n    \/\/ \u57f7\u884c\u64cd\u4f5c\n    ...\n    \/\/ \u91cb\u653e\u9396\n    DEL lock_key\n}<\/code><\/pre>\n<h3 id=\"2-%e5%ae%9a%e6%9c%9f%e6%b8%85%e7%90%86%e9%81%8e%e6%9c%9f%e9%8d%b5-rjNlpFSEel\">2. \u5b9a\u671f\u6e05\u7406\u904e\u671f\u9375<\/h3>\n<p>\u9664\u4e86 Redis \u7684\u5167\u5efa\u904e\u671f\u6a5f\u5236\uff0c\u9084\u53ef\u4ee5\u8a2d\u8a08\u4e00\u500b\u5b9a\u671f\u4efb\u52d9\u4f86\u4e3b\u52d5\u6e05\u7406\u904e\u671f\u9375\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u904e\u671f\u9375\u5c0d\u7cfb\u7d71\u6027\u80fd\u7684\u5f71\u97ff\u3002<\/p>\n<pre><code>while (true) {\n    \/\/ \u67e5\u8a62\u904e\u671f\u9375\n    expired_keys = SCAN my_key_pattern\n    for (key in expired_keys) {\n        DEL key\n    }\n    sleep(1000) \/\/ \u6bcf\u79d2\u57f7\u884c\u4e00\u6b21\n}<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-ttl-%e6%a9%9f%e5%88%b6-rjNlpFSEel\">3. \u4f7f\u7528 TTL \u6a5f\u5236<\/h3>\n<p>\u5728\u8a2d\u8a08\u61c9\u7528\u6642\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 TTL\uff08Time To Live\uff09\u6a5f\u5236\uff0c\u70ba\u6bcf\u500b\u9375\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4e26\u5728\u61c9\u7528\u908f\u8f2f\u4e2d\u8003\u616e\u904e\u671f\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-rjNlpFSEel\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0cRedis \u7684\u904e\u671f\u554f\u984c\u9700\u8981\u958b\u767c\u8005\u7279\u5225\u6ce8\u610f\u3002\u901a\u904e\u4f7f\u7528\u5206\u5e03\u5f0f\u9396\u3001\u5b9a\u671f\u6e05\u7406\u904e\u671f\u9375\u548c\u5408\u7406\u8a2d\u7f6e TTL\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u61c9\u7528\u548c\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528 Redis \u89e3\u6c7a\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u904e\u671f\u554f\u984c\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6578\u64da\u4e00\u81f4\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-97398","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97398","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=97398"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97398\/revisions"}],"predecessor-version":[{"id":97399,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97398\/revisions\/97399"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=97398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=97398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=97398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}