{"id":128621,"date":"2024-10-26T15:31:16","date_gmt":"2024-10-26T07:31:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128621\/"},"modified":"2024-10-26T15:31:17","modified_gmt":"2024-10-26T07:31:17","slug":"redis%e5%af%a6%e7%8f%be%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%e8%87%aa%e5%8b%95%e8%a7%b8%e7%99%bc%ef%bc%88redis%e9%81%8e%e6%9c%9f%e6%99%82%e5%9f%b7%e8%a1%8c%e6%96%b9%e6%b3%95%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128621\/","title":{"rendered":"Redis\u5be6\u73fe\u904e\u671f\u4e8b\u4ef6\u81ea\u52d5\u89f8\u767c\uff08redis\u904e\u671f\u6642\u57f7\u884c\u65b9\u6cd5\uff09"},"content":{"rendered":"

Redis\u5be6\u73fe\u904e\u671f\u4e8b\u4ef6\u81ea\u52d5\u89f8\u767c\uff08redis\u904e\u671f\u6642\u57f7\u884c\u65b9\u6cd5\uff09<\/h1>\n

Redis\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u5b58\u5132\u7b49\u5834\u666f\u3002\u5176\u652f\u6301\u7684\u904e\u671f\u6642\u9593\u529f\u80fd\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u8a2d\u7f6e\u9375\u7684\u6709\u6548\u671f\uff0c\u7576\u9375\u904e\u671f\u5f8c\uff0c\u81ea\u52d5\u522a\u9664\u6216\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u904e\u671f\u4e8b\u4ef6\u7684\u81ea\u52d5\u89f8\u767c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n

Redis\u7684\u904e\u671f\u6a5f\u5236<\/h2>\n

Redis\u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u6a5f\u5236\uff1a\u5b9a\u6642\u522a\u9664\u548c\u60f0\u6027\u522a\u9664\u3002\u5b9a\u6642\u522a\u9664\u662f\u6307Redis\u6703\u5b9a\u671f\u6aa2\u67e5\u6240\u6709\u8a2d\u7f6e\u4e86\u904e\u671f\u6642\u9593\u7684\u9375\uff0c\u4e26\u522a\u9664\u90a3\u4e9b\u5df2\u7d93\u904e\u671f\u7684\u9375\u3002\u60f0\u6027\u522a\u9664\u5247\u662f\u5728\u8a2a\u554f\u67d0\u500b\u9375\u6642\uff0c\u6aa2\u67e5\u5176\u662f\u5426\u904e\u671f\uff0c\u5982\u679c\u904e\u671f\u5247\u522a\u9664\u3002<\/p>\n

\u904e\u671f\u4e8b\u4ef6\u7684\u81ea\u52d5\u89f8\u767c<\/h2>\n

\u96d6\u7136Redis\u672c\u8eab\u4e0d\u652f\u6301\u76f4\u63a5\u5728\u9375\u904e\u671f\u6642\u57f7\u884c\u67d0\u500b\u65b9\u6cd5\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u4e00\u4e9b\u9593\u63a5\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528Redis\u7684Keyspace Notifications<\/h3>\n

Redis\u7684Keyspace Notifications\u529f\u80fd\u5141\u8a31\u7528\u6236\u8a02\u95b1\u9375\u7684\u4e8b\u4ef6\uff0c\u5305\u62ec\u9375\u7684\u904e\u671f\u4e8b\u4ef6\u3002\u555f\u7528\u6b64\u529f\u80fd\u5f8c\uff0c\u7576\u9375\u904e\u671f\u6642\uff0cRedis\u6703\u767c\u9001\u901a\u77e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9019\u4e9b\u901a\u77e5\u57f7\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\u3002<\/p>\n

CONFIG SET notify-keyspace-events Ex<\/code><\/pre>\n
\u4e0a\u8ff0\u547d\u4ee4\u5c07\u555f\u7528\u904e\u671f\u4e8b\u4ef6\u7684\u901a\u77e5\u3002\u63a5\u4e0b\u4f86\uff0c\u53ef\u4ee5\u4f7f\u7528Redis\u7684Pub\/Sub\u6a5f\u5236\u4f86\u8a02\u95b1\u9019\u4e9b\u4e8b\u4ef6\uff1a<\/p>\n
SUBSCRIBE __keyevent@0__:expired<\/code><\/pre>\n
\u7576\u67d0\u500b\u9375\u904e\u671f\u6642\uff0cRedis\u6703\u5411\u8a02\u95b1\u8005\u767c\u9001\u4e00\u689d\u6d88\u606f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u63a5\u6536\u5230\u6d88\u606f\u5f8c\u57f7\u884c\u7279\u5b9a\u7684\u64cd\u4f5c\u3002<\/p>\n
2. \u4f7f\u7528\u5b9a\u6642\u4efb\u52d9<\/h3>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u4f7f\u7528\u5b9a\u6642\u4efb\u52d9\u4f86\u6aa2\u67e5\u904e\u671f\u7684\u9375\u3002\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u4e0d\u5982Keyspace Notifications\u5373\u6642\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u4ecd\u7136\u6709\u6548\u3002\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u5b9a\u6642\u4efb\u52d9\u5b9a\u671f\u67e5\u8a62Redis\uff0c\u6aa2\u67e5\u54ea\u4e9b\u9375\u5df2\u7d93\u904e\u671f\uff0c\u7136\u5f8c\u57f7\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\u3002<\/p>\n
while True:\n    expired_keys = redis_client.keys('*')\n    for key in expired_keys:\n        if redis_client.ttl(key) == -2:  # -2\u8868\u793a\u9375\u4e0d\u5b58\u5728\n            # \u57f7\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\n    time.sleep(60)  # \u6bcf60\u79d2\u6aa2\u67e5\u4e00\u6b21\n<\/code><\/pre>\n
3. \u4f7f\u7528Lua\u8173\u672c<\/h3>\n
Redis\u652f\u6301Lua\u8173\u672c\uff0c\u53ef\u4ee5\u5728\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\u6642\u6aa2\u67e5\u9375\u7684\u904e\u671f\u72c0\u614b\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u500b\u539f\u5b50\u64cd\u4f5c\u4e2d\u5b8c\u6210\u6aa2\u67e5\u548c\u57f7\u884c\u64cd\u4f5c\u3002<\/p>\n
local ttl = redis.call('ttl', KEYS[1])\nif ttl == -2 then\n    -- \u57f7\u884c\u76f8\u61c9\u7684\u64cd\u4f5c\nend\n<\/code><\/pre>\n
\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n
\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u904e\u671f\u4e8b\u4ef6\u7684\u81ea\u52d5\u89f8\u767c\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u5834\u666f\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u512a\u60e0\u5238\u7684\u904e\u671f\u6642\u9593\uff0c\u7576\u512a\u60e0\u5238\u904e\u671f\u6642\uff0c\u81ea\u52d5\u5c07\u5176\u5f9e\u7528\u6236\u7684\u8cec\u6236\u4e2d\u79fb\u9664\u3002\u53c8\u6216\u8005\u5728\u4e00\u500b\u804a\u5929\u61c9\u7528\u4e2d\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u6d88\u606f\u7684\u904e\u671f\u6642\u9593\uff0c\u7576\u6d88\u606f\u904e\u671f\u6642\uff0c\u81ea\u52d5\u522a\u9664\u8a72\u6d88\u606f\u4ee5\u91cb\u653e\u5b58\u5132\u7a7a\u9593\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Redis\u7684\u904e\u671f\u4e8b\u4ef6\u81ea\u52d5\u89f8\u767c\u529f\u80fd\u96d6\u7136\u4e0d\u76f4\u63a5\u652f\u6301\uff0c\u4f46\u901a\u904eKeyspace Notifications\u3001\u5b9a\u6642\u4efb\u52d9\u548cLua\u8173\u672c\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9019\u4e00\u9700\u6c42\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u9748\u6d3b\u6027\uff0c\u9084\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u7684\u751f\u547d\u5468\u671f\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u4f7f\u7528Redis\u6216\u5176\u4ed6\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u63a2\u7d22\u6211\u5011\u7684VPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u52a9\u60a8\u5728\u9999\u6e2f\u7684\u696d\u52d9\u767c\u5c55\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728Redis\u4e2d\u5be6\u73fe\u904e\u671f\u4e8b\u4ef6\u81ea\u52d5\u89f8\u767c\uff0c\u4e26\u57f7\u884c\u6307\u5b9a\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\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-128621","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128621","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=128621"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128621\/revisions"}],"predecessor-version":[{"id":128622,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128621\/revisions\/128622"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}