{"id":98068,"date":"2024-10-20T23:30:20","date_gmt":"2024-10-20T15:30:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98068\/"},"modified":"2024-10-20T23:30:21","modified_gmt":"2024-10-20T15:30:21","slug":"redis-%e6%9f%a5%e7%9c%8b%e9%8d%b5%e5%80%bc%e5%a4%a7%e5%b0%8f%e6%9c%89%e6%95%88%e6%96%b9%e5%bc%8f%e8%88%87%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98068\/","title":{"rendered":"Redis \u67e5\u770b\u9375\u503c\u5927\u5c0f\u6709\u6548\u65b9\u5f0f\u8207\u6280\u5de7"},"content":{"rendered":"

Redis \u67e5\u770b\u9375\u503c\u5927\u5c0f\u6709\u6548\u65b9\u5f0f\u8207\u6280\u5de7<\/h1>\n

\u5728\u4f7f\u7528 Redis \u9019\u500b\u9ad8\u6548\u80fd\u7684\u9375\u503c\u5132\u5b58\u7cfb\u7d71\u6642\uff0c\u4e86\u89e3\u5982\u4f55\u67e5\u770b\u9375\u503c\u7684\u5927\u5c0f\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u512a\u5316\u5132\u5b58\u7a7a\u9593\uff0c\u9084\u80fd\u63d0\u9ad8\u61c9\u7528\u7a0b\u5f0f\u7684\u6548\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\u8207\u6280\u5de7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u67e5\u770b Redis \u4e2d\u9375\u503c\u7684\u5927\u5c0f\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u67e5\u770b\u9375\u503c\u5927\u5c0f<\/h2>\n

\u5728 Redis \u4e2d\uff0c\u9375\u503c\u7684\u5927\u5c0f\u6703\u5f71\u97ff\u5230\u8a18\u61b6\u9ad4\u7684\u4f7f\u7528\u6548\u7387\u3002\u7576\u5132\u5b58\u5927\u91cf\u6578\u64da\u6642\uff0c\u4e86\u89e3\u6bcf\u500b\u9375\u503c\u7684\u5927\u5c0f\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u505a\u51fa\u66f4\u597d\u7684\u8a2d\u8a08\u6c7a\u7b56\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8a18\u61b6\u9ad4\u6d6a\u8cbb\u3002\u6b64\u5916\uff0c\u900f\u904e\u76e3\u63a7\u9375\u503c\u5927\u5c0f\uff0c\u60a8\u9084\u53ef\u4ee5\u53ca\u6642\u767c\u73fe\u6f5b\u5728\u7684\u6027\u80fd\u554f\u984c\u3002<\/p>\n

\u4f7f\u7528 Redis \u547d\u4ee4\u67e5\u770b\u9375\u503c\u5927\u5c0f<\/h2>\n

Redis \u63d0\u4f9b\u4e86\u5e7e\u500b\u547d\u4ee4\u4f86\u67e5\u770b\u9375\u503c\u7684\u5927\u5c0f\uff0c\u6700\u5e38\u7528\u7684\u547d\u4ee4\u662f STRLEN<\/code> \u548c MEMORY USAGE<\/code>\u3002<\/p>\n

1. \u4f7f\u7528 STRLEN \u547d\u4ee4<\/h3>\n

\u5982\u679c\u60a8\u8981\u67e5\u770b\u4e00\u500b\u5b57\u7b26\u4e32\u985e\u578b\u7684\u9375\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528 STRLEN<\/code> \u547d\u4ee4\u3002\u9019\u500b\u547d\u4ee4\u6703\u8fd4\u56de\u6307\u5b9a\u9375\u7684\u5b57\u4e32\u9577\u5ea6\uff08\u4ee5\u5b57\u7bc0\u70ba\u55ae\u4f4d\uff09\u3002<\/p>\n

STRLEN mykey<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u9375 mykey<\/code>\uff0c\u53ef\u4ee5\u9019\u6a23\u67e5\u770b\u5176\u5927\u5c0f\uff1a<\/p>\n
127.0.0.1:6379> SET mykey \"Hello, Redis!\"\nOK\n127.0.0.1:6379> STRLEN mykey\n(integer) 12\n<\/code><\/pre>\n
2. \u4f7f\u7528 MEMORY USAGE \u547d\u4ee4<\/h3>\n
\u5c0d\u65bc\u5176\u4ed6\u985e\u578b\u7684\u9375\uff08\u5982\u5217\u8868\u3001\u96c6\u5408\u3001\u54c8\u5e0c\u7b49\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528 MEMORY USAGE<\/code> \u547d\u4ee4\u4f86\u67e5\u770b\u9375\u7684\u8a18\u61b6\u9ad4\u4f7f\u7528\u91cf\u3002\u9019\u500b\u547d\u4ee4\u6703\u8fd4\u56de\u6307\u5b9a\u9375\u6240\u4f54\u7528\u7684\u8a18\u61b6\u9ad4\u5927\u5c0f\uff08\u4ee5\u5b57\u7bc0\u70ba\u55ae\u4f4d\uff09\u3002<\/p>\n
MEMORY USAGE mylist<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5217\u8868\u985e\u578b\u7684\u9375 mylist<\/code>\uff0c\u53ef\u4ee5\u9019\u6a23\u67e5\u770b\u5176\u5927\u5c0f\uff1a<\/p>\n
127.0.0.1:6379> LPUSH mylist \"item1\"\n(integer) 1\n127.0.0.1:6379> LPUSH mylist \"item2\"\n(integer) 2\n127.0.0.1:6379> MEMORY USAGE mylist\n(integer) 56\n<\/code><\/pre>\n
\u4f7f\u7528 Lua \u8173\u672c\u8a08\u7b97\u9375\u503c\u5927\u5c0f<\/h2>\n
\u5982\u679c\u60a8\u9700\u8981\u8a08\u7b97\u591a\u500b\u9375\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 Lua \u8173\u672c\u3002\u9019\u6a23\u53ef\u4ee5\u5728 Redis \u4f3a\u670d\u5668\u7aef\u57f7\u884c\u8a08\u7b97\uff0c\u6e1b\u5c11\u7db2\u8def\u5ef6\u9072\u3002<\/p>\n
local total_size = 0\nfor i, key in ipairs(KEYS) do\n    total_size = total_size + redis.call('MEMORY', 'USAGE', key)\nend\nreturn total_size\n<\/code><\/pre>\n
\u9019\u6bb5\u8173\u672c\u6703\u904d\u6b77\u50b3\u5165\u7684\u9375\uff0c\u4e26\u8a08\u7b97\u5b83\u5011\u7684\u7e3d\u5927\u5c0f\u3002\u60a8\u53ef\u4ee5\u9019\u6a23\u57f7\u884c\uff1a<\/p>\n
EVAL \"local total_size = 0 for i, key in ipairs(KEYS) do total_size = total_size + redis.call('MEMORY', 'USAGE', key) end return total_size\" 0 mykey1 mykey2 mykey3\n<\/code><\/pre>\n
\u76e3\u63a7\u5de5\u5177\u7684\u4f7f\u7528<\/h2>\n
\u9664\u4e86\u4f7f\u7528\u547d\u4ee4\u548c\u8173\u672c\uff0c\u9084\u53ef\u4ee5\u5229\u7528\u4e00\u4e9b\u76e3\u63a7\u5de5\u5177\u4f86\u67e5\u770b Redis \u7684\u9375\u503c\u5927\u5c0f\u3002\u4f8b\u5982\uff0cRedis Desktop Manager \u548c RedisInsight \u7b49\u5de5\u5177\u63d0\u4f9b\u4e86\u53ef\u8996\u5316\u7684\u754c\u9762\uff0c\u8b93\u60a8\u66f4\u65b9\u4fbf\u5730\u67e5\u770b\u548c\u7ba1\u7406\u9375\u503c\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4e86\u89e3\u5982\u4f55\u67e5\u770b Redis \u4e2d\u9375\u503c\u7684\u5927\u5c0f\u5c0d\u65bc\u512a\u5316\u61c9\u7528\u7a0b\u5f0f\u7684\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u900f\u904e\u4f7f\u7528 STRLEN<\/code> \u548c MEMORY USAGE<\/code> \u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u55ae\u500b\u9375\u7684\u5927\u5c0f\uff1b\u800c\u4f7f\u7528 Lua \u8173\u672c\u5247\u80fd\u5920\u8a08\u7b97\u591a\u500b\u9375\u7684\u7e3d\u5927\u5c0f\u3002\u6b64\u5916\uff0c\u501f\u52a9\u76e3\u63a7\u5de5\u5177\uff0c\u60a8\u53ef\u4ee5\u66f4\u76f4\u89c0\u5730\u7ba1\u7406 Redis \u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u7684\u61c9\u7528\u7a0b\u5f0f\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u4e2d\u67e5\u770b\u9375\u503c\u5927\u5c0f\u7684\u6709\u6548\u65b9\u6cd5\u8207\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u512a\u5316\u6027\u80fd\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\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-98068","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98068","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=98068"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98068\/revisions"}],"predecessor-version":[{"id":98069,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98068\/revisions\/98069"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}