{"id":196035,"date":"2024-11-13T19:59:19","date_gmt":"2024-11-13T11:59:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196035\/"},"modified":"2024-11-13T19:59:20","modified_gmt":"2024-11-13T11:59:20","slug":"%e4%bd%94%e7%94%a8%e6%9f%a5%e7%9c%8bredis%e4%b8%ad%e9%8d%b5%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%94%e7%94%a8%e6%83%85%e6%b3%81%ef%bc%88redis%e6%9f%a5%e7%9c%8b%e6%9f%90%e5%80%8b%e9%8d%b5%e5%85%a7%e5%ad%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196035\/","title":{"rendered":"\u4f54\u7528\u67e5\u770bRedis\u4e2d\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\uff08redis\u67e5\u770b\u67d0\u500b\u9375\u5167\u5b58\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%94%e7%94%a8%e6%9f%a5%e7%9c%8bredis%e4%b8%ad%e9%8d%b5%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%94%e7%94%a8%e6%83%85%e6%b3%81-GuZLPYKLIu\">\u4f54\u7528\u67e5\u770bRedis\u4e2d\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1<\/h1>\n<p>Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u7de9\u5b58\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u589e\u9577\uff0c\u4e86\u89e3\u6bcf\u500b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u512a\u5316\u5167\u5b58\u4f7f\u7528\uff0c\u9084\u80fd\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u67e5\u770bRedis\u4e2d\u67d0\u500b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e8%a6%81%e6%9f%a5%e7%9c%8b%e9%8d%b5%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%94%e7%94%a8%e6%83%85%e6%b3%81-GuZLPYKLIu\">\u70ba\u4ec0\u9ebc\u8981\u67e5\u770b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u6642\uff0c\u5167\u5b58\u7ba1\u7406\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u6bcf\u500b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u76f4\u63a5\u5f71\u97ff\u5230\u6574\u500bRedis\u5be6\u4f8b\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u67e5\u770b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u4e86\u89e3\u54ea\u4e9b\u9375\u4f54\u7528\u4e86\u904e\u591a\u7684\u5167\u5b58\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u9032\u884c\u512a\u5316\uff0c\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u5167\u5b58\u6d88\u8017\u3002<\/li>\n<li><strong>\u6545\u969c\u6392\u67e5\uff1a<\/strong>\u7576Redis\u6027\u80fd\u4e0b\u964d\u6642\uff0c\u67e5\u770b\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u53ef\u4ee5\u5e6b\u52a9\u5b9a\u4f4d\u554f\u984c\u7684\u6839\u6e90\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u7ba1\u7406\uff1a<\/strong>\u5728\u8cc7\u6e90\u6709\u9650\u7684\u74b0\u5883\u4e2d\uff0c\u5408\u7406\u5206\u914d\u5167\u5b58\u8cc7\u6e90\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8bredis%e4%b8%ad%e9%8d%b5%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%94%e7%94%a8%e6%83%85%e6%b3%81-GuZLPYKLIu\">\u5982\u4f55\u67e5\u770bRedis\u4e2d\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u4e00\u4e9b\u547d\u4ee4\u4f86\u67e5\u770b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u3002\u6700\u5e38\u7528\u7684\u547d\u4ee4\u662f <code>MEMORY USAGE<\/code>\u3002\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u8fd4\u56de\u6307\u5b9a\u9375\u7684\u5167\u5b58\u4f7f\u7528\u91cf\uff08\u4ee5\u5b57\u7bc0\u70ba\u55ae\u4f4d\uff09\u3002<\/p>\n<h3>\u4f7f\u7528 <code>MEMORY USAGE<\/code> \u547d\u4ee4<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>MEMORY USAGE<\/code> \u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>MEMORY USAGE key<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u67e5\u770b\u9375 <code>mykey<\/code> \u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\uff0c\u53ef\u4ee5\u5728Redis\u547d\u4ee4\u884c\u4e2d\u8f38\u5165\uff1a<\/p>\n<pre><code>MEMORY USAGE mykey<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de <code>mykey<\/code> \u4f54\u7528\u7684\u5167\u5b58\u5927\u5c0f\uff08\u4ee5\u5b57\u7bc0\u70ba\u55ae\u4f4d\uff09\u3002\u5982\u679c\u8a72\u9375\u4e0d\u5b58\u5728\uff0c\u5247\u8fd4\u56de0\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e7%9c%8b%e6%89%80%e6%9c%89%e9%8d%b5%e7%9a%84%e5%85%a7%e5%ad%98%e4%bd%94%e7%94%a8%e6%83%85%e6%b3%81-GuZLPYKLIu\">\u67e5\u770b\u6240\u6709\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1<\/h3>\n<p>\u5982\u679c\u9700\u8981\u67e5\u770b\u6240\u6709\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\u7d50\u5408 <code>MEMORY USAGE<\/code> \u547d\u4ee4\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nSCAN 0 MATCH * COUNT 1000\n<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u5c07\u8fd4\u56de\u6700\u591a1000\u500b\u9375\u3002\u7136\u5f8c\uff0c\u5c0d\u65bc\u6bcf\u500b\u9375\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>MEMORY USAGE<\/code> \u547d\u4ee4\u4f86\u67e5\u770b\u5176\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u3002\u9019\u6a23\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u7372\u5f97\u6574\u9ad4\u7684\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e8%a8%88%e7%ae%97%e6%89%80%e6%9c%89%e9%8d%b5%e7%9a%84%e7%b8%bd%e5%85%a7%e5%ad%98%e4%bd%94%e7%94%a8-GuZLPYKLIu\">\u793a\u4f8b\uff1a\u8a08\u7b97\u6240\u6709\u9375\u7684\u7e3d\u5167\u5b58\u4f54\u7528<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u793a\u4f8b\uff0c\u4f7f\u7528Redis\u7684Python\u5ba2\u6236\u7aef\u4f86\u8a08\u7b97\u6240\u6709\u9375\u7684\u7e3d\u5167\u5b58\u4f54\u7528\uff1a<\/p>\n<pre><code>\nimport redis\n\n# \u9023\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u7e3d\u5167\u5b58\u4f54\u7528\ntotal_memory = 0\n\n# \u4f7f\u7528SCAN\u547d\u4ee4\u904d\u6b77\u6240\u6709\u9375\ncursor = 0\nwhile True:\n    cursor, keys = r.scan(cursor=cursor, count=1000)\n    for key in keys:\n        total_memory += r.memory_usage(key)\n    if cursor == 0:\n        break\n\nprint(f\"\u6240\u6709\u9375\u7684\u7e3d\u5167\u5b58\u4f54\u7528: {total_memory} \u5b57\u7bc0\")\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-GuZLPYKLIu\">\u7d50\u8ad6<\/h2>\n<p>\u4e86\u89e3Redis\u4e2d\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u5c0d\u65bc\u512a\u5316\u6027\u80fd\u548c\u8cc7\u6e90\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528 <code>MEMORY USAGE<\/code> \u547d\u4ee4\u548c\u5176\u4ed6\u76f8\u95dc\u547d\u4ee4\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\uff0c\u5f9e\u800c\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u589e\u9577\uff0c\u5b9a\u671f\u6aa2\u67e5\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\u5c07\u6709\u52a9\u65bc\u4fdd\u6301\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/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>\u4e86\u89e3\u5982\u4f55\u67e5\u770bRedis\u4e2d\u67d0\u500b\u9375\u7684\u5167\u5b58\u4f54\u7528\u60c5\u6cc1\uff0c\u5e6b\u52a9\u512a\u5316\u6578\u64da\u5b58\u5132\u548c\u6027\u80fd\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-196035","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196035","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=196035"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196035\/revisions"}],"predecessor-version":[{"id":196036,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196035\/revisions\/196036"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196035"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196035"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196035"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}