{"id":129577,"date":"2024-10-26T22:41:19","date_gmt":"2024-10-26T14:41:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129577\/"},"modified":"2024-10-26T22:41:20","modified_gmt":"2024-10-26T14:41:20","slug":"redis%e9%80%9a%e9%81%8e%e5%b9%be%e7%a8%ae%e6%96%b9%e5%bc%8f%e6%b8%85%e7%90%86%e5%bf%ab%e5%8f%96%ef%bc%88redis%e6%b8%85%e7%90%86%e5%bf%ab%e5%8f%96%e7%9a%84%e6%96%b9%e6%b3%95%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129577\/","title":{"rendered":"Redis\u901a\u904e\u5e7e\u7a2e\u65b9\u5f0f\u6e05\u7406\u5feb\u53d6\uff08redis\u6e05\u7406\u5feb\u53d6\u7684\u65b9\u6cd5\uff09"},"content":{"rendered":"

Redis\u901a\u904e\u5e7e\u7a2e\u65b9\u5f0f\u6e05\u7406\u5feb\u53d6\uff08redis\u6e05\u7406\u5feb\u53d6\u7684\u65b9\u6cd5\uff09<\/h1>\n

Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u5feb\u53d6\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u7b49\u5834\u666f\u3002\u96a8\u8457\u4f7f\u7528\u6642\u9593\u7684\u589e\u52a0\uff0cRedis\u4e2d\u7684\u5feb\u53d6\u6578\u64da\u53ef\u80fd\u6703\u8b8a\u5f97\u5197\u9918\u6216\u904e\u671f\uff0c\u56e0\u6b64\u5b9a\u671f\u6e05\u7406\u5feb\u53d6\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u7684Redis\u5feb\u53d6\u6e05\u7406\u65b9\u6cd5\u3002<\/p>\n

1. \u4e3b\u52d5\u904e\u671f\uff08Active Expiration\uff09<\/h2>\n

Redis\u63d0\u4f9b\u4e86\u4e00\u500b\u4e3b\u52d5\u904e\u671f\u6a5f\u5236\uff0c\u5141\u8a31\u7528\u6236\u70ba\u6bcf\u500b\u9375\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u3002\u7576\u4e00\u500b\u9375\u7684\u904e\u671f\u6642\u9593\u5230\u9054\u6642\uff0cRedis\u6703\u81ea\u52d5\u5c07\u5176\u522a\u9664\u3002\u9019\u7a2e\u65b9\u6cd5\u975e\u5e38\u9069\u5408\u9700\u8981\u5b9a\u671f\u66f4\u65b0\u7684\u6578\u64da\u3002<\/p>\n

SET mykey \"Hello\"\nEXPIRE mykey 10  # \u8a2d\u7f6emykey\u572810\u79d2\u5f8c\u904e\u671f\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cmykey\u5c07\u572810\u79d2\u5f8c\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u662f\u7c21\u55ae\u6613\u7528\uff0c\u4f46\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n
2. \u88ab\u52d5\u904e\u671f\uff08Passive Expiration\uff09<\/h2>\n
\u88ab\u52d5\u904e\u671f\u662f\u6307\u7576\u7528\u6236\u8a2a\u554f\u4e00\u500b\u5df2\u7d93\u904e\u671f\u7684\u9375\u6642\uff0cRedis\u6703\u81ea\u52d5\u5c07\u5176\u522a\u9664\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u6703\u4e3b\u52d5\u6aa2\u67e5\u6240\u6709\u9375\u7684\u904e\u671f\u72c0\u614b\uff0c\u800c\u662f\u4f9d\u8cf4\u65bc\u7528\u6236\u7684\u64cd\u4f5c\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u9375\u7684\u904e\u671f\u6642\u9593\u5df2\u7d93\u5230\u9054\uff0c\u4f46\u6c92\u6709\u88ab\u8a2a\u554f\uff0c\u90a3\u9ebc\u5b83\u5c07\u4e0d\u6703\u88ab\u522a\u9664\uff0c\u76f4\u5230\u4e0b\u4e00\u6b21\u8a2a\u554f\u6642\u624d\u6703\u88ab\u6e05\u7406\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u662f\u6e1b\u5c11\u4e86\u7cfb\u7d71\u7684\u8ca0\u64d4\uff0c\u4f46\u53ef\u80fd\u6703\u5c0e\u81f4\u4e00\u4e9b\u904e\u671f\u6578\u64da\u5728\u77ed\u6642\u9593\u5167\u4ecd\u7136\u53ef\u7528\u3002<\/p>\n
3. \u5b9a\u671f\u6e05\u7406\uff08Periodic Cleanup\uff09<\/h2>\n
Redis\u9084\u652f\u6301\u5b9a\u671f\u6e05\u7406\u6a5f\u5236\uff0c\u901a\u904e\u914d\u7f6eRedis\u7684 maxmemory-policy<\/code> \u53c3\u6578\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u5728\u5167\u5b58\u9054\u5230\u4e0a\u9650\u6642\u81ea\u52d5\u6e05\u7406\u5feb\u53d6\u3002<\/p>\n
CONFIG SET maxmemory 100mb\nCONFIG SET maxmemory-policy allkeys-lru  # \u4f7f\u7528LRU\u7b97\u6cd5\u6e05\u7406\u6700\u5c11\u4f7f\u7528\u7684\u9375\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576Redis\u7684\u5167\u5b58\u4f7f\u7528\u91cf\u9054\u5230100MB\u6642\uff0c\u5c07\u81ea\u52d5\u6e05\u7406\u6700\u5c11\u4f7f\u7528\u7684\u9375\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5167\u5b58\u4f7f\u7528\uff0c\u4f46\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u8abf\u6574\u3002<\/p>\n
4. \u624b\u52d5\u6e05\u7406\uff08Manual Cleanup\uff09<\/h2>\n
\u9664\u4e86\u81ea\u52d5\u6e05\u7406\u5916\uff0c\u7528\u6236\u9084\u53ef\u4ee5\u624b\u52d5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u9375\u3002\u9019\u53ef\u4ee5\u901a\u904e DEL<\/code> \u547d\u4ee4\u4f86\u5be6\u73fe\u3002<\/p>\n
DEL mykey  # \u624b\u52d5\u522a\u9664mykey\n<\/code><\/pre>\n
\u624b\u52d5\u6e05\u7406\u7684\u512a\u9ede\u662f\u9748\u6d3b\u6027\u9ad8\uff0c\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u8981\u96a8\u6642\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3002\u7136\u800c\uff0c\u9019\u9700\u8981\u7528\u6236\u4e3b\u52d5\u9032\u884c\u64cd\u4f5c\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u4e00\u4e9b\u904e\u671f\u6578\u64da\u672a\u88ab\u53ca\u6642\u6e05\u7406\u3002<\/p>\n
5. \u4f7f\u7528Redis\u7684\u6578\u64da\u7d50\u69cb<\/h2>\n
Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5217\u8868\u3001\u96c6\u5408\u548c\u54c8\u5e0c\u7b49\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb\u4f86\u7ba1\u7406\u5feb\u53d6\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u96c6\u5408\u53ef\u4ee5\u65b9\u4fbf\u5730\u7ba1\u7406\u4e00\u7d44\u6578\u64da\uff0c\u4e26\u901a\u904e SREM<\/code> \u547d\u4ee4\u522a\u9664\u4e0d\u9700\u8981\u7684\u5143\u7d20\u3002<\/p>\n
SADD myset \"value1\" \"value2\"\nSREM myset \"value1\"  # \u522a\u9664\u96c6\u5408\u4e2d\u7684value1\n<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis\u63d0\u4f9b\u4e86\u591a\u7a2e\u6e05\u7406\u5feb\u53d6\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u4e3b\u52d5\u904e\u671f\u3001\u88ab\u52d5\u904e\u671f\u3001\u5b9a\u671f\u6e05\u7406\u3001\u624b\u52d5\u6e05\u7406\u4ee5\u53ca\u4f7f\u7528\u4e0d\u540c\u7684\u6578\u64da\u7d50\u69cb\u3002\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u5834\u666f\u548c\u9700\u6c42\uff0c\u7528\u6236\u53ef\u4ee5\u9078\u64c7\u6700\u5408\u9069\u7684\u6e05\u7406\u7b56\u7565\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u5feb\u53d6\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u670d\u52d9\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u5347\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u6e05\u7406\u5feb\u53d6\u7684\u591a\u7a2e\u65b9\u6cd5\uff0c\u5305\u62ec\u904e\u671f\u7b56\u7565\u3001\u4e3b\u52d5\u522a\u9664\u548cLRU\u7b97\u6cd5\uff0c\u63d0\u5347\u6027\u80fd\u8207\u8cc7\u6e90\u7ba1\u7406\u6548\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-129577","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129577","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=129577"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129577\/revisions"}],"predecessor-version":[{"id":129578,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129577\/revisions\/129578"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}