{"id":201822,"date":"2025-05-10T09:30:49","date_gmt":"2025-05-10T01:30:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201822\/"},"modified":"2025-05-10T09:30:49","modified_gmt":"2025-05-10T01:30:49","slug":"redis%e5%bb%b6%e8%bf%9f%e5%8f%8c%e5%88%a0%e7%ad%96%e7%95%a5%e7%a4%ba%e4%be%8b%e8%ae%b2%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201822\/","title":{"rendered":"redis\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565\u793a\u4f8b\u8bb2\u89e3"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>redis\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565\u793a\u4f8b\u8bb2\u89e3<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6570\u636e\u5e93<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aredis\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565\u793a\u4f8b\u8bb2\u89e3\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">redis\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565<\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p>\u5728\u5f53\u524d\u73af\u5883\u4e0b\uff0c\u901a\u5e38\u6211\u4eec\u4f1a\u9996\u9009redis\u7f13\u5b58\u6765\u51cf\u8f7b\u6211\u4eec\u6570\u636e\u5e93\u8bbf\u95ee\u538b\u529b\u3002\u4f46\u662f\u4e5f\u4f1a\u9047\u5230\u4ee5\u4e0b\u8fd9\u79cd\u60c5\u51b5\uff1a\u5927\u91cf\u7528\u6237\u6765\u8bbf\u95ee\u6211\u4eec\u7cfb\u7edf\uff0c\u9996\u5148\u4f1a\u53bb\u67e5\u8be2\u7f13\u5b58\uff0c \u5982\u679c\u7f13\u5b58\u4e2d\u6ca1\u6709\u6570\u636e\uff0c\u5219\u53bb\u67e5\u8be2\u6570\u636e\u5e93\uff0c\u7136\u540e\u66f4\u65b0\u6570\u636e\u5230\u7f13\u5b58\u4e2d\uff0c\u5e76\u4e14\u5982\u679c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u53d1\u751f\u4e86\u6539\u53d8\u5219\u9700\u8981\u540c\u6b65\u5230redis\u4e2d\uff0c\u540c\u6b65\u8fc7\u7a0b\u4e2d\u9700\u8981\u4fdd\u8bc1 MySQL\u4e0eredis\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898\uff0c\u5728\u8fd9\u4e2a\u540c\u6b65\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u77ed\u6682\u7684\u6570\u636e\u5ef6\u8fdf\u4e5f\u662f\u6b63\u5e38\u73b0\u8c61\uff0c\u4f46\u662f\u6700\u7ec8\u9700\u8981\u4fdd\u8bc1mysql\u4e0e\u7f13\u5b58\u4e2d\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<pre>\/\/\u6211\u4eec\u901a\u5e38\u4f7f\u7528redis\u7684\u903b\u8f91\n    \/\/\u901a\u5e38\u6211\u4eec\u662f\u5148\u67e5\u8be2reids\n    String value = RedisUtils.get(key);\n    if (!StringUtils.isEmpty(value)){\n        return value;\n    }\n\/\/\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6570\u636e\n    value = getValueForDb(key);\n    if (!StringUtils.isEmpty(value)){\n           RedisUtils.set(key,value);\n        return value;\n     }<\/pre>\n<h2>1\u3001\u4ec0\u4e48\u662f\u5ef6\u8fdf\u53cc\u5220\uff1f<\/h2>\n<p>\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u6570\u636e\u5e93\u5b58\u50a8\u548c\u7f13\u5b58\u6570\u636e\u4fdd\u6301\u4e00\u81f4\u6027\u7684\u5e38\u7528\u7b56\u7565\uff0c\u4f46\u5b83\u4e0d\u662f\u5f3a\u4e00\u81f4\u3002\u5176\u5b9e\u4e0d\u7ba1\u54ea\u79cd\u65b9\u6848\uff0c\u90fd\u907f\u514d\u4e0d\u4e86Redis\u5b58\u5728\u810f\u6570\u636e\u7684\u95ee\u9898\uff0c\u53ea\u80fd\u51cf\u8f7b\u8fd9\u4e2a\u95ee\u9898\uff0c\u8981\u60f3\u5f7b\u5e95\u89e3\u51b3\uff0c\u5f97\u8981\u7528\u5230\u540c\u6b65\u9501\u548c\u5bf9\u5e94\u7684\u4e1a\u52a1\u903b\u8f91\u5c42\u9762\u89e3\u51b3\u3002<\/p>\n<h2>2\u3001\u4e3a\u4ec0\u4e48\u8981\u8fdb\u884c\u5ef6\u8fdf\u53cc\u5220\uff1f<\/h2>\n<p>\u4e00\u822c\u6211\u4eec\u5728\u66f4\u65b0\u6570\u636e\u5e93\u6570\u636e\u65f6\uff0c\u9700\u8981\u540c\u6b65redis\u4e2d\u7f13\u5b58\u7684\u6570\u636e \u6240\u4ee5\u6211\u4eec\u4e00\u822c\u4f1a\u7ed9\u51fa\u4e24\u79cd\u65b9\u6848\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\u79cd\u65b9\u6848\uff1a\u5148\u6267\u884cupdate\u64cd\u4f5c\uff0c\u518d\u6267\u884c\u7f13\u5b58\u6e05\u9664\u3002<\/li>\n<li>\u7b2c\u4e8c\u79cd\u65b9\u6848\uff1a\u5148\u6267\u884c\u7f13\u5b58\u6e05\u9664\uff0c\u518d\u6267\u884cupdate\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u4f46\u662f\u8fd9\u4e24\u79cd\u65b9\u6848\u5728\u5e76\u53d1\u8bf7\u6c42\u4e2d\u5bb9\u6613\u51fa\u73b0\u4ee5\u4e0b\u95ee\u9898<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230513\/1683943933645ef1fd8c995.jpg1683943933645ef1fd8c9a2.png\" class=\"aligncenter\"><\/p>\n<p>\u7b2c\u4e00\u79cd\u65b9\u6848\u5f0a\u7aef\uff1a\u5f53\u8bf7\u6c421\u53bb\u6267\u884c\u6570\u636e\u5e93\u66f4\u65b0\u64cd\u4f5c\u4e4b\u540e\uff0c\u8fd8\u6ca1\u6267\u884c\u7f13\u5b58\u6e05\u9664\u65f6\uff0c\u8bf7\u6c422\u5c31\u8fdb\u6765\u4e86\u67e5\u8be2\u4e86\u7f13\u5b58\uff0c\u6b64\u65f6\u7f13\u5b58\u4e2d\u6570\u636e\u8fd8\u662f\u65e7\u6570\u636e\uff0c\u8fd8\u6ca1\u6765\u5f97\u673a\u5220\u9664\u5bfc\u81f4\u6570\u636e\u51fa\u73b0\u95ee\u9898\uff0c\u4f46\u662f\u5f53t1\u6267\u884c\u7f13\u5b58\u5220\u9664\u64cd\u4f5c\u4e4b\u540e\uff0c\u540e\u9762\u7684\u8bf7\u6c42\u67e5\u8be2\u4e0d\u5230\u7f13\u5b58\uff0c\u518d\u5230\u6570\u636e\u4e2d\u67e5\u8be2\uff0c\u7136\u540e\u66f4\u65b0\u5230\u7f13\u5b58\u4e2d\uff0c\u8fd9\u79cd\u5f71\u54cd\u662f\u6bd4\u8f83\u5c0f\u7684<\/p>\n<ol>\n<li>t1\u7ebf\u7a0b \u5148\u66f4\u65b0db\uff1b<\/li>\n<li>t2\u7ebf\u7a0b\u67e5\u8be2\u547d\u4e2d\u7f13\u5b58 \u8fd4\u56de\u65e7\u7684\u6570\u636e\uff1b<\/li>\n<li>\u5047\u8bbet1\u7ebf\u7a0b\u66f4\u65b0\u5b8cdb\uff0c\u9884\u8ba15\u6beb\u79d2\u5220\u9664\u5b8c\u7f13\u5b58key \u57285\u6beb\u79d2\u5185 \u5176\u4ed6\u7ebf\u7a0b\u67e5\u8be2\u7f13\u5b58\u7ed3\u679c\u8fd8\u662f\u4e3a\u65e7\u7684\u6570\u636e\uff0c\u4f46\u662f 5\u6beb\u79d2\u540e\u67e5\u8be2\u7f13\u5b58\u7ed3\u679c\u662f\u4e3a\u7a7a\uff0c\u5728\u4ece\u65b0\u5c06db\u6700\u65b0\u7684\u7ed3\u679c\u540c\u6b65\u5230Redis\u4e2d\u3002<\/li>\n<li>\u4e00\u4e2a\u9879\u76ee\u4e2d\u51fa\u73b0\u5ef6\u8fdf\u662f\u975e\u5e38\u6b63\u5e38\u7684\uff0c\u6240\u4ee5\u8be5\u60c5\u51b5\u53d1\u751f\u7684\u5ef6\u8fdf\u5bf9\u4e1a\u52a1\u7684\u5f71\u54cd\u5176\u5b9e\u5f88\u5c0f\u3002\u4f46\u662f\u5982\u679c\u53d1\u751f\u4e86\uff0c\u5220\u9664\u7f13\u5b58\u5931\u8d25\u5462\uff1f<\/li>\n<\/ol>\n<p>1.\u4e0d\u65ad\u91cd\u8bd5&#8212;-\u5982\u679c\u662f\u5728http\u534f\u8bae\u63a5\u53e3\u4e2d \u4f1a\u5bfc\u81f4\u63a5\u53e3\u54cd\u5e94\u53d8\u6162 \u8c03\u7528\u8be5\u63a5\u53e3 \u4f1a\u53d1\u751f\u54cd\u5e94\u8d85\u65f6 2.\u6216\u8005\u901a\u8fc7mq\u5f02\u6b65\u7684\u5f62\u5f0f\u540c\u6b65<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230513\/1683943933645ef1fdc5bcb.jpg1683943933645ef1fdc5bde.png\" class=\"aligncenter\"><\/p>\n<p>\u7b2c\u4e8c\u79cd\u65b9\u6848\u5f0a\u7aef\uff1a\u5f53\u8bf7\u6c421\u6267\u884c\u6e05\u9664\u7f13\u5b58\u540e\uff0c\u8fd8\u672a\u6267\u884c\u6570\u636e\u66f4\u65b0\u64cd\u4f5c\u7684\u65f6\uff0c\u8bf7\u6c422\u8fdb\u6765\u67e5\u8be2\u5230\u6570\u636e\u5e93\u7684\u65e7\u6570\u636e\uff0c\u5e76\u5199\u5165\u4e86redis\uff0c\u8fd9\u5c31\u5bfc\u81f4\u4e86\u6570\u636e\u5e93\u4e0eredis\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\u3002<\/p>\n<ul>\n<li>t1\u7ebf\u7a0b\u5148\u5220\u9664\u7f13\u5b58\uff1b<\/li>\n<li>t2\u7ebf\u7a0b\u8bfb\u53d6\u7f13\u5b58\u4e3anull\uff0c\u540c\u6b65db\u6570\u636e\u5230\u7f13\u5b58\u4e2d\uff1b<\/li>\n<li>t1\u7ebf\u7a0b\u66f4\u65b0db\u4e2d\u7684\u6570\u636e\uff1b<\/li>\n<li>t3\u7ebf\u7a0b\u67e5\u8be2\u7f13\u5b58\u4e2d\u6570\u636e\u662f\u65e7\u6570\u636e\uff1b<\/li>\n<\/ul>\n<h2>3\u3001\u5bf9\u4e8e\u65b9\u6848\u5904\u7406\u90fd\u6709\u5f0a\u7aef\uff0c\u90a3\u4e48\u6211\u4eec\u9700\u8981\u4f7f\u7528\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565<\/h2>\n<p>\u5148\u8fdb\u884c\u7f13\u5b58\u6e05\u9664\uff0c\u518d\u6267\u884cupdate\uff0c\u6700\u540e\uff08\u5ef6\u8fdfN\u79d2\uff09\u518d\u6267\u884c\u7f13\u5b58\u6e05\u9664\u3002\u8fdb\u884c\u4e24\u6b21\u5220\u9664\uff0c\u4e14\u4e2d\u95f4\u9700\u8981\u5ef6\u8fdf\u4e00\u6bb5\u65f6\u95f4<\/p>\n<pre>    RedisUtils.del(key);\/\/ \u5148\u5220\u9664\u7f13\u5b58    updateDB(user);\/\/ \u66f4\u65b0db\u4e2d\u7684\u6570\u636e    Thread.sleep(N);\/\/ \u5ef6\u8fdf\u4e00\u6bb5\u65f6\u95f4\uff0c\u5728\u5220\u9664\u8be5\u7f13\u5b58key    RedisUtils.del(key);\/\/ \u5148\u5220\u9664\u7f13\u5b58<\/pre>\n<h2>4\u3001\u9700\u8981\u6ce8\u610f\u7684\u70b9<\/h2>\n<p>\u4e0a\u8ff0\u4e2d\uff08\u5ef6\u8fdfN\u79d2\uff09\u7684\u65f6\u95f4\u8981\u5927\u4e8e\u4e00\u6b21\u5199\u64cd\u4f5c\u7684\u65f6\u95f4\u3002\u539f\u56e0\uff1a\u5982\u679c\u5ef6\u8fdf\u65f6\u95f4\u5c0f\u4e8e\u5199\u5165redis\u7684\u65f6\u95f4\uff0c\u4f1a\u5bfc\u81f4\u8bf7\u6c421\u6e05\u9664\u4e86\u7f13\u5b58\uff0c\u4f46\u662f\u8bf7\u6c422\u7f13\u5b58\u8fd8\u672a\u5199\u5165\u7684\u5c34\u5c2c\u3002\u3002\u3002<\/p>\n<h2>5\u3001\u5ef6\u8fdf\u7684\u65f6\u95f4\u5982\u4f55\u786e\u5b9a\uff1f<\/h2>\n<p>\u5728\u4e1a\u52a1\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u7edf\u8ba1\u4e1a\u52a1\u903b\u8f91\u6267\u884c\u8bfb\u6570\u636e\u548c\u5199\u7f13\u5b58\u7684\u64cd\u4f5c\u65f6\u95f4\uff0c\u4ee5\u6b64\u4e3a\u57fa\u7840\u6765\u8fdb\u884c\u4f30\u7b97\u3002\u56e0\u4e3a\u8fd9\u4e2a\u65b9\u6848\u4f1a\u5728\u7b2c\u4e00\u6b21\u5220\u9664\u7f13\u5b58\u503c\u540e\uff0c\u5ef6\u8fdf\u4e00\u6bb5\u65f6\u95f4\u518d\u6b21\u8fdb\u884c\u5220\u9664\uff0c\u6240\u4ee5\u79f0\u4e3a\u201c\u5ef6\u8fdf\u53cc\u5220\u201d\u3002<\/p>\n<h2>\u5c0f\u7ed3<\/h2>\n<p>\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565\u53ea\u662f\u4e00\u79cd\u540c\u6b65\u6570\u636e\u5e93\u4e0e\u7f13\u5b58\u7684\u624b\u6bb5\uff0c\u5728\u7cfb\u7edf\u5e76\u53d1\u91cf\u4e0d\u9ad8\u7684\u60c5\u51b5\u4e0b\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u89e3\u51b3\uff0c\u5982\u679c\u662f\u5e76\u53d1\u91cf\u9ad8\u7684\u60c5\u51b5\u4e0b\u6211\u4eec\u4e5f\u53ef\u4ee5\u53e6\u5bfb\u5176\u4ed6\u89e3\u51b3\u65b9\u6848 \u5982\uff1acanal<\/p>\n","protected":false},"excerpt":{"rendered":"<p>redis\u5ef6\u8fdf\u53cc\u5220\u7b56\u7565\u793a\u4f8b\u8bb2\u89e3 &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201822","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201822","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201822"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201822\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}