{"id":100484,"date":"2024-10-22T09:44:03","date_gmt":"2024-10-22T01:44:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/100484\/"},"modified":"2024-10-22T09:44:04","modified_gmt":"2024-10-22T01:44:04","slug":"redis-%e7%ae%a1%e7%90%86%e5%85%a7%e5%ad%98%e6%b8%85%e7%90%86%e9%87%8b%e6%94%be%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/100484\/","title":{"rendered":"Redis \u7ba1\u7406\u5167\u5b58\u6e05\u7406\u91cb\u653e\u4e0d\u5fc5\u8981\u7684\u6578\u64da"},"content":{"rendered":"<h1 id=\"redis-%e7%ae%a1%e7%90%86%e5%85%a7%e5%ad%98%e6%b8%85%e7%90%86%e9%87%8b%e6%94%be%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e6%95%b8%e6%93%9a-BTItMhPBbv\">Redis \u7ba1\u7406\u5167\u5b58\u6e05\u7406\u91cb\u653e\u4e0d\u5fc5\u8981\u7684\u6578\u64da<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5373\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002\u96a8\u8457\u4f7f\u7528\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u7ba1\u7406 Redis \u7684\u5167\u5b58\u6210\u70ba\u4e86\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u9762\u81e8\u7684\u4e00\u5927\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u7684\u5167\u5b58\u7ba1\u7406\u6a5f\u5236\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u6e05\u7406\u548c\u91cb\u653e\u4e0d\u5fc5\u8981\u6578\u64da\u7684\u7b56\u7565\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%85%a7%e5%ad%98%e7%ae%a1%e7%90%86%e6%a9%9f%e5%88%b6-BTItMhPBbv\">Redis \u7684\u5167\u5b58\u7ba1\u7406\u6a5f\u5236<\/h2>\n<p>Redis \u4f7f\u7528\u4e00\u7a2e\u7a31\u70ba\u300c\u5167\u5b58\u5206\u914d\u5668\u300d\u7684\u6a5f\u5236\u4f86\u7ba1\u7406\u5167\u5b58\u3002\u5b83\u7684\u5167\u5b58\u5206\u914d\u5668\u57fa\u65bc jemalloc\uff0c\u9019\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u5206\u914d\u5eab\uff0c\u80fd\u5920\u6e1b\u5c11\u5167\u5b58\u788e\u7247\u4e26\u63d0\u9ad8\u6027\u80fd\u3002Redis \u7684\u5167\u5b58\u4f7f\u7528\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u7d50\u69cb\uff1a<\/strong>Redis \u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\u3002\u6bcf\u7a2e\u6578\u64da\u7d50\u69cb\u7684\u5167\u5b58\u4f7f\u7528\u65b9\u5f0f\u4e0d\u540c\u3002<\/li>\n<li><strong>\u5167\u5b58\u788e\u7247\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\u548c\u522a\u9664\uff0c\u5167\u5b58\u788e\u7247\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u3002Redis \u6703\u5b9a\u671f\u9032\u884c\u5167\u5b58\u91cd\u5206\u914d\u4ee5\u6e1b\u5c11\u788e\u7247\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\uff1a<\/strong>Redis \u63d0\u4f9b RDB \u548c AOF \u5169\u7a2e\u6301\u4e45\u5316\u65b9\u5f0f\uff0c\u9019\u6703\u5f71\u97ff\u5167\u5b58\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b8%85%e7%90%86%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e6%95%b8%e6%93%9a-BTItMhPBbv\">\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u7ba1\u7406 Redis \u7684\u5167\u5b58\uff0c\u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6e05\u7406\u7b56\u7565\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%81%8e%e6%9c%9f%e6%99%82%e9%96%93-BTItMhPBbv\">1. \u4f7f\u7528\u904e\u671f\u6642\u9593<\/h3>\n<p>Redis \u5141\u8a31\u70ba\u6bcf\u500b\u9375\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002\u7576\u9375\u904e\u671f\u5f8c\uff0cRedis \u6703\u81ea\u52d5\u522a\u9664\u9019\u4e9b\u9375\uff0c\u91cb\u653e\u5167\u5b58\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff1a<\/p>\n<pre><code>EXPIRE key seconds<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u9375 &#8220;session:123&#8221; \u8a2d\u7f6e\u70ba 60 \u79d2\u5f8c\u904e\u671f\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>EXPIRE session:123 60<\/code><\/pre>\n<h3 id=\"2-%e4%b8%bb%e5%8b%95%e6%b8%85%e7%90%86-BTItMhPBbv\">2. \u4e3b\u52d5\u6e05\u7406<\/h3>\n<p>\u9664\u4e86\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528 <code>DEL<\/code> \u547d\u4ee4\u4e3b\u52d5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u9375\uff1a<\/p>\n<pre><code>DEL key<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664\u9375 &#8220;temp:data&#8221;\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>DEL temp:data<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-lru-%e9%a9%85%e9%80%90%e7%ad%96%e7%95%a5-BTItMhPBbv\">3. \u4f7f\u7528 LRU \u9a45\u9010\u7b56\u7565<\/h3>\n<p>Redis \u63d0\u4f9b\u4e86\u591a\u7a2e\u9a45\u9010\u7b56\u7565\uff0c\u5176\u4e2d LRU\uff08Least Recently Used\uff09\u7b56\u7565\u53ef\u4ee5\u81ea\u52d5\u522a\u9664\u6700\u5c11\u4f7f\u7528\u7684\u9375\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u914d\u7f6e\u4f86\u555f\u7528 LRU \u9a45\u9010\uff1a<\/p>\n<pre><code>maxmemory-policy allkeys-lru<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7576 Redis \u7684\u5167\u5b58\u9054\u5230\u4e0a\u9650\u6642\uff0c\u5c07\u81ea\u52d5\u522a\u9664\u6700\u5c11\u4f7f\u7528\u7684\u9375\u4ee5\u91cb\u653e\u5167\u5b58\u3002<\/p>\n<h3 id=\"4-%e7%9b%a3%e6%8e%a7%e5%85%a7%e5%ad%98%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81-BTItMhPBbv\">4. \u76e3\u63a7\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1<\/h3>\n<p>\u5b9a\u671f\u76e3\u63a7 Redis \u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528 <code>INFO memory<\/code> \u547d\u4ee4\u4f86\u67e5\u770b\u5167\u5b58\u7684\u4f7f\u7528\u72c0\u6cc1\uff1a<\/p>\n<pre><code>INFO memory<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u7576\u524d\u7684\u5167\u5b58\u4f7f\u7528\u91cf\u3001\u6700\u5927\u5167\u5b58\u9650\u5236\u548c\u5167\u5b58\u788e\u7247\u7387\u7b49\u4fe1\u606f\uff0c\u5e6b\u52a9\u7ba1\u7406\u54e1\u505a\u51fa\u76f8\u61c9\u7684\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-BTItMhPBbv\">\u7d50\u8ad6<\/h2>\n<p>\u6709\u6548\u7684\u5167\u5b58\u7ba1\u7406\u5c0d\u65bc\u4fdd\u6301 Redis \u7684\u9ad8\u6548\u904b\u884c\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3001\u4e3b\u52d5\u6e05\u7406\u3001\u4f7f\u7528 LRU \u9a45\u9010\u7b56\u7565\u4ee5\u53ca\u5b9a\u671f\u76e3\u63a7\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\uff0c\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u53ef\u4ee5\u78ba\u4fdd Redis \u5728\u9ad8\u8ca0\u8f09\u4e0b\u4ecd\u80fd\u4fdd\u6301\u826f\u597d\u7684\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c\u5176\u4ed6\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 Redis \u4e2d\u6709\u6548\u7ba1\u7406\u5167\u5b58\uff0c\u6e05\u7406\u548c\u91cb\u653e\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff0c\u63d0\u5347\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\u7387\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-100484","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/100484","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=100484"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/100484\/revisions"}],"predecessor-version":[{"id":100485,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/100484\/revisions\/100485"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=100484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=100484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=100484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}