{"id":195261,"date":"2024-11-13T13:33:19","date_gmt":"2024-11-13T05:33:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195261\/"},"modified":"2024-11-13T13:33:20","modified_gmt":"2024-11-13T05:33:20","slug":"%e5%84%aa%e5%8c%96%e5%af%a6%e7%8f%beredis%e7%b7%a9%e5%ad%98%e7%ad%96%e7%95%a5%e5%85%a8%e5%b1%80%e5%84%aa%e5%8c%96%ef%bc%88redis-%e7%b7%a9%e5%ad%98%e7%ad%96%e7%95%a5%e5%85%a8%e5%b1%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195261\/","title":{"rendered":"\u512a\u5316\u5be6\u73feRedis\u7de9\u5b58\u7b56\u7565\u5168\u5c40\u512a\u5316\uff08redis \u7de9\u5b58\u7b56\u7565\u5168\u5c40\uff09"},"content":{"rendered":"<h1 id=\"%e5%84%aa%e5%8c%96%e5%af%a6%e7%8f%beredis%e7%b7%a9%e5%ad%98%e7%ad%96%e7%95%a5%e5%85%a8%e5%b1%80%e5%84%aa%e5%8c%96-wphkYbMviq\">\u512a\u5316\u5be6\u73feRedis\u7de9\u5b58\u7b56\u7565\u5168\u5c40\u512a\u5316<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u6027\u80fd\u548c\u97ff\u61c9\u901f\u5ea6\u662f\u7528\u6236\u9ad4\u9a57\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u7b56\u7565\u4e2d\uff0c\u4ee5\u63d0\u9ad8\u6578\u64da\u5b58\u53d6\u7684\u901f\u5ea6\u548c\u6548\u7387\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u512a\u5316Redis\u7de9\u5b58\u7b56\u7565\uff0c\u5be6\u73fe\u5168\u5c40\u512a\u5316\uff0c\u5f9e\u800c\u63d0\u5347\u61c9\u7528\u7684\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afredis%e7%b7%a9%e5%ad%98%e7%ad%96%e7%95%a5%ef%bc%9f-wphkYbMviq\">\u4ec0\u9ebc\u662fRedis\u7de9\u5b58\u7b56\u7565\uff1f<\/h2>\n<p>Redis\u7de9\u5b58\u7b56\u7565\u662f\u6307\u5728\u4f7f\u7528Redis\u4f5c\u70ba\u7de9\u5b58\u5c64\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u5b58\u53d6\u6578\u64da\u7684\u7b56\u7565\u3002\u9019\u4e9b\u7b56\u7565\u5305\u62ec\u6578\u64da\u7684\u5b58\u5132\u3001\u904e\u671f\u3001\u6dd8\u6c70\u7b49\u6a5f\u5236\uff0c\u65e8\u5728\u6700\u5927\u9650\u5ea6\u5730\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\u548c\u5b58\u53d6\u901f\u5ea6\u3002<\/p>\n<h2 id=\"redis%e7%b7%a9%e5%ad%98%e7%ad%96%e7%95%a5%e7%9a%84%e9%a1%9e%e5%9e%8b-wphkYbMviq\">Redis\u7de9\u5b58\u7b56\u7565\u7684\u985e\u578b<\/h2>\n<ul>\n<li><strong>LRU\uff08Least Recently Used\uff09<\/strong>: \u9019\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6dd8\u6c70\u7b56\u7565\uff0c\u7576Redis\u7684\u5167\u5b58\u9054\u5230\u4e0a\u9650\u6642\uff0c\u6703\u512a\u5148\u522a\u9664\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\u7684\u6578\u64da\u3002<\/li>\n<li><strong>LFU\uff08Least Frequently Used\uff09<\/strong>: \u9019\u7a2e\u7b56\u7565\u6703\u6839\u64da\u6578\u64da\u7684\u4f7f\u7528\u983b\u7387\u4f86\u6c7a\u5b9a\u6dd8\u6c70\u7684\u5c0d\u8c61\uff0c\u512a\u5148\u522a\u9664\u4f7f\u7528\u983b\u7387\u6700\u4f4e\u7684\u6578\u64da\u3002<\/li>\n<li><strong>TTL\uff08Time To Live\uff09<\/strong>: \u8a2d\u7f6e\u6578\u64da\u7684\u904e\u671f\u6642\u9593\uff0c\u8d85\u904e\u9019\u500b\u6642\u9593\u5f8c\uff0c\u6578\u64da\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%85%a8%e5%b1%80%e5%84%aa%e5%8c%96%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-wphkYbMviq\">\u5168\u5c40\u512a\u5316\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u96a8\u8457\u61c9\u7528\u898f\u6a21\u7684\u64f4\u5927\uff0c\u55ae\u4e00\u7684\u7de9\u5b58\u7b56\u7565\u53ef\u80fd\u7121\u6cd5\u6eff\u8db3\u9700\u6c42\u3002\u5168\u5c40\u512a\u5316\u4e0d\u50c5\u50c5\u662f\u91dd\u5c0d\u55ae\u4e00\u670d\u52d9\u5668\u6216\u61c9\u7528\uff0c\u800c\u662f\u9700\u8981\u8003\u616e\u6574\u500b\u7cfb\u7d71\u7684\u67b6\u69cb\u548c\u6578\u64da\u6d41\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u7cfb\u7d71\u4ecd\u7136\u80fd\u5920\u4fdd\u6301\u7a69\u5b9a\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e5%af%a6%e7%8f%be%e5%85%a8%e5%b1%80%e5%84%aa%e5%8c%96%e7%9a%84%e7%ad%96%e7%95%a5-wphkYbMviq\">\u5be6\u73fe\u5168\u5c40\u512a\u5316\u7684\u7b56\u7565<\/h2>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e5%88%86%e7%89%87-wphkYbMviq\">1. \u6578\u64da\u5206\u7247<\/h3>\n<p>\u5c07\u6578\u64da\u5206\u7247\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u55ae\u500bRedis\u5be6\u4f8b\u7684\u8ca0\u64d4\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500bRedis\u5be6\u4f8b\u4e2d\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6574\u9ad4\u7684\u8b80\u53d6\u548c\u5beb\u5165\u6027\u80fd\u3002\u9019\u7a2e\u65b9\u6cd5\u7279\u5225\u9069\u5408\u65bc\u5927\u898f\u6a21\u61c9\u7528\u3002<\/p>\n<pre><code>\n# \u5047\u8a2d\u6709\u4e09\u500bRedis\u5be6\u4f8b\nredis1 = Redis(host='192.168.1.1', port=6379)\nredis2 = Redis(host='192.168.1.2', port=6379)\nredis3 = Redis(host='192.168.1.3', port=6379)\n\n# \u6839\u64dakey\u7684hash\u503c\u9078\u64c7\u5be6\u4f8b\ndef get_redis_instance(key):\n    hash_value = hash(key) % 3\n    if hash_value == 0:\n        return redis1\n    elif hash_value == 1:\n        return redis2\n    else:\n        return redis3\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-wphkYbMviq\">2. \u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb<\/h3>\n<p>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u6839\u64da\u61c9\u7528\u7684\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u5b58\u53d6\u6548\u7387\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u54c8\u5e0c\u4f86\u5b58\u5132\u7528\u6236\u4fe1\u606f\uff0c\u53ef\u4ee5\u6e1b\u5c11\u5167\u5b58\u7684\u4f7f\u7528\u3002<\/p>\n<h3 id=\"3-%e5%ae%9a%e6%9c%9f%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-wphkYbMviq\">3. \u5b9a\u671f\u76e3\u63a7\u548c\u8abf\u6574<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7Redis\u7684\u6027\u80fd\u6307\u6a19\uff0c\u5982\u5167\u5b58\u4f7f\u7528\u7387\u3001\u547d\u4e2d\u7387\u7b49\uff0c\u53ef\u4ee5\u5e6b\u52a9\u53ca\u6642\u767c\u73fe\u554f\u984c\u4e26\u9032\u884c\u8abf\u6574\u3002\u4f7f\u7528Redis\u7684\u5167\u5efa\u547d\u4ee4\uff0c\u5982INFO\uff0c\u53ef\u4ee5\u7372\u53d6\u8a73\u7d30\u7684\u6027\u80fd\u6578\u64da\u3002<\/p>\n<pre><code>\n# \u7372\u53d6Redis\u6027\u80fd\u4fe1\u606f\ninfo = redis1.info()\nprint(info['used_memory'], info['hit_ratio'])\n<\/code><\/pre>\n<h3 id=\"4-%e5%af%a6%e6%96%bd%e7%b7%a9%e5%ad%98%e9%a0%90%e7%86%b1-wphkYbMviq\">4. \u5be6\u65bd\u7de9\u5b58\u9810\u71b1<\/h3>\n<p>\u5728\u7cfb\u7d71\u555f\u52d5\u6216\u91cd\u555f\u6642\uff0c\u63d0\u524d\u52a0\u8f09\u5e38\u7528\u6578\u64da\u5230\u7de9\u5b58\u4e2d\uff0c\u53ef\u4ee5\u6e1b\u5c11\u9996\u6b21\u8acb\u6c42\u7684\u5ef6\u9072\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u7528\u6236\u7684\u521d\u59cb\u9ad4\u9a57\uff0c\u7279\u5225\u662f\u5728\u9ad8\u6d41\u91cf\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-wphkYbMviq\">\u7d50\u8ad6<\/h2>\n<p>\u512a\u5316Redis\u7de9\u5b58\u7b56\u7565\u7684\u5168\u5c40\u512a\u5316\u662f\u4e00\u500b\u7cfb\u7d71\u6027\u5de5\u7a0b\uff0c\u9700\u8981\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002\u901a\u904e\u6578\u64da\u5206\u7247\u3001\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb\u3001\u5b9a\u671f\u76e3\u63a7\u548c\u7de9\u5b58\u9810\u71b1\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u7de9\u5b58\u7b56\u7565\u7684\u5168\u5c40\u512a\u5316\u65b9\u6cd5\uff0c\u63d0\u9ad8\u7cfb\u7d71\u6027\u80fd\u8207\u6548\u7387\uff0c\u5be6\u73fe\u66f4\u5feb\u7684\u6578\u64da\u5b58\u53d6\u8207\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-195261","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195261","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=195261"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195261\/revisions"}],"predecessor-version":[{"id":195262,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195261\/revisions\/195262"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195261"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195261"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}