{"id":98736,"date":"2024-10-21T05:06:19","date_gmt":"2024-10-20T21:06:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98736\/"},"modified":"2024-10-21T05:06:20","modified_gmt":"2024-10-20T21:06:20","slug":"redis-%e7%9a%84%e9%9b%aa%e5%b4%a9%e9%8e%96%e8%a7%a3%e6%b1%ba%e7%b3%bb%e7%b5%b1%e6%80%a7%e8%83%bd%e5%95%8f%e9%a1%8c%e7%9a%84%e9%97%9c%e9%8d%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98736\/","title":{"rendered":"Redis \u7684\u96ea\u5d29\u9396\u89e3\u6c7a\u7cfb\u7d71\u6027\u80fd\u554f\u984c\u7684\u95dc\u9375"},"content":{"rendered":"<h1 id=\"redis-%e7%9a%84%e9%9b%aa%e5%b4%a9%e9%8e%96%e8%a7%a3%e6%b1%ba%e7%b3%bb%e7%b5%b1%e6%80%a7%e8%83%bd%e5%95%8f%e9%a1%8c%e7%9a%84%e9%97%9c%e9%8d%b5-JNWdBMFUmI\">Redis \u7684\u96ea\u5d29\u9396\u89e3\u6c7a\u7cfb\u7d71\u6027\u80fd\u554f\u984c\u7684\u95dc\u9375<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Redis \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\u7136\u800c\uff0c\u7576 Redis \u7684\u4f7f\u7528\u4e0d\u7576\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7cfb\u7d71\u6027\u80fd\u554f\u984c\uff0c\u7279\u5225\u662f\u96ea\u5d29\u6548\u61c9\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u7684\u96ea\u5d29\u9396\u89e3\u6c7a\u65b9\u6848\u53ca\u5176\u5c0d\u7cfb\u7d71\u6027\u80fd\u7684\u5f71\u97ff\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%9b%aa%e5%b4%a9%e6%95%88%e6%87%89%ef%bc%9f-JNWdBMFUmI\">\u4ec0\u9ebc\u662f\u96ea\u5d29\u6548\u61c9\uff1f<\/h2>\n<p>\u96ea\u5d29\u6548\u61c9\u662f\u6307\u5728\u9ad8\u4e26\u767c\u60c5\u6cc1\u4e0b\uff0c\u7576\u5927\u91cf\u8acb\u6c42\u540c\u6642\u5230\u9054 Redis \u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4 Redis \u670d\u52d9\u5668\u7684\u6027\u80fd\u6025\u5287\u4e0b\u964d\uff0c\u751a\u81f3\u5d29\u6f70\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u7de9\u5b58\u5931\u6548\u7684\u77ac\u9593\uff0c\u6240\u6709\u8acb\u6c42\u540c\u6642\u53bb\u67e5\u8a62\u5f8c\u7aef\u6578\u64da\u5eab\uff0c\u9020\u6210\u6578\u64da\u5eab\u7684\u8ca0\u8f09\u904e\u9ad8\u3002<\/p>\n<h2 id=\"%e9%9b%aa%e5%b4%a9%e9%8e%96%e7%9a%84%e6%a6%82%e5%bf%b5-JNWdBMFUmI\">\u96ea\u5d29\u9396\u7684\u6982\u5ff5<\/h2>\n<p>\u96ea\u5d29\u9396\u662f\u4e00\u7a2e\u9632\u6b62\u96ea\u5d29\u6548\u61c9\u7684\u6280\u8853\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u901a\u904e\u9396\u5b9a\u8acb\u6c42\uff0c\u8b93\u540c\u4e00\u6642\u9593\u53ea\u6709\u4e00\u500b\u8acb\u6c42\u80fd\u5920\u53bb\u67e5\u8a62\u5f8c\u7aef\u6578\u64da\u5eab\uff0c\u5176\u4ed6\u8acb\u6c42\u5247\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u8acb\u6c42\u5b8c\u6210\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u58d3\u529b\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"%e5%af%a6%e7%8f%be%e9%9b%aa%e5%b4%a9%e9%8e%96%e7%9a%84%e6%ad%a5%e9%a9%9f-JNWdBMFUmI\">\u5be6\u73fe\u96ea\u5d29\u9396\u7684\u6b65\u9a5f<\/h2>\n<p>\u5be6\u73fe\u96ea\u5d29\u9396\u7684\u904e\u7a0b\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u6aa2\u67e5\u7de9\u5b58\uff1a<\/strong>\u9996\u5148\uff0c\u61c9\u8a72\u6aa2\u67e5 Redis \u4e2d\u662f\u5426\u5b58\u5728\u6240\u9700\u7684\u6578\u64da\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u8fd4\u56de\u3002<\/li>\n<li><strong>\u52a0\u9396\uff1a<\/strong>\u5982\u679c\u7de9\u5b58\u4e2d\u4e0d\u5b58\u5728\u6578\u64da\uff0c\u5247\u9700\u8981\u52a0\u9396\u3002\u53ef\u4ee5\u4f7f\u7528 Redis \u7684 SETNX \u547d\u4ee4\u4f86\u5be6\u73fe\u9396\u5b9a\u3002<\/li>\n<li><strong>\u67e5\u8a62\u5f8c\u7aef\u6578\u64da\u5eab\uff1a<\/strong>\u7372\u5f97\u9396\u5f8c\uff0c\u67e5\u8a62\u5f8c\u7aef\u6578\u64da\u5eab\u4ee5\u7372\u53d6\u6240\u9700\u6578\u64da\u3002<\/li>\n<li><strong>\u66f4\u65b0\u7de9\u5b58\uff1a<\/strong>\u5c07\u67e5\u8a62\u5230\u7684\u6578\u64da\u66f4\u65b0\u5230 Redis \u4e2d\uff0c\u4e26\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\uff1a<\/strong>\u6700\u5f8c\uff0c\u91cb\u653e\u9396\uff0c\u8b93\u5176\u4ed6\u8acb\u6c42\u53ef\u4ee5\u7e7c\u7e8c\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-JNWdBMFUmI\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nfunction getData($key) {\n    \/\/ \u6aa2\u67e5\u7de9\u5b58\n    $data = redis_get($key);\n    if ($data) {\n        return $data;\n    }\n\n    \/\/ \u52a0\u9396\n    $lockKey = $key . \"_lock\";\n    if (redis_setnx($lockKey, 1)) {\n        \/\/ \u67e5\u8a62\u5f8c\u7aef\u6578\u64da\u5eab\n        $data = queryDatabase($key);\n        \n        \/\/ \u66f4\u65b0\u7de9\u5b58\n        redis_set($key, $data, 3600); \/\/ \u8a2d\u7f6e\u904e\u671f\u6642\u9593\u70ba1\u5c0f\u6642\n        \n        \/\/ \u91cb\u653e\u9396\n        redis_del($lockKey);\n        \n        return $data;\n    } else {\n        \/\/ \u7b49\u5f85\u9396\u91cb\u653e\n        sleep(1);\n        return getData($key);\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e9%9b%aa%e5%b4%a9%e9%8e%96%e7%9a%84%e5%84%aa%e5%8b%a2-JNWdBMFUmI\">\u96ea\u5d29\u9396\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528\u96ea\u5d29\u9396\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u5177\u9ad4\u512a\u52e2\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6e1b\u5c11\u6578\u64da\u5eab\u8ca0\u8f09\uff1a<\/strong>\u901a\u904e\u9650\u5236\u540c\u6642\u8acb\u6c42\u6578\u91cf\uff0c\u6e1b\u5c11\u5c0d\u5f8c\u7aef\u6578\u64da\u5eab\u7684\u58d3\u529b\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u97ff\u61c9\u901f\u5ea6\uff1a<\/strong>\u7de9\u5b58\u547d\u4e2d\u7387\u63d0\u9ad8\uff0c\u80fd\u5920\u66f4\u5feb\u5730\u8fd4\u56de\u6578\u64da\u3002<\/li>\n<li><strong>\u589e\u5f37\u7cfb\u7d71\u7a69\u5b9a\u6027\uff1a<\/strong>\u907f\u514d\u56e0\u9ad8\u4e26\u767c\u8acb\u6c42\u5c0e\u81f4\u7684\u7cfb\u7d71\u5d29\u6f70\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-JNWdBMFUmI\">\u7d50\u8ad6<\/h2>\n<p>\u5728\u4f7f\u7528 Redis \u7684\u904e\u7a0b\u4e2d\uff0c\u96ea\u5d29\u6548\u61c9\u662f\u4e00\u500b\u4e0d\u5bb9\u5ffd\u8996\u7684\u554f\u984c\u3002\u901a\u904e\u5be6\u65bd\u96ea\u5d29\u9396\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u7cfb\u7d71\u6027\u80fd\u554f\u984c\uff0c\u78ba\u4fdd\u61c9\u7528\u7684\u7a69\u5b9a\u904b\u884c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u6027\u80fd\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u9019\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Redis \u96ea\u5d29\u9396\u89e3\u6c7a\u7cfb\u7d71\u6027\u80fd\u554f\u984c\u7684\u95dc\u9375\uff0c\u63d0\u5347\u61c9\u7528\u6548\u80fd\uff0c\u78ba\u4fdd\u7a69\u5b9a\u6027\u8207\u9ad8\u6548\u80fd\u904b\u4f5c\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-98736","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98736","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=98736"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98736\/revisions"}],"predecessor-version":[{"id":98737,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98736\/revisions\/98737"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}