{"id":129091,"date":"2024-10-26T19:01:20","date_gmt":"2024-10-26T11:01:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129091\/"},"modified":"2024-10-26T19:01:21","modified_gmt":"2024-10-26T11:01:21","slug":"redis%e5%af%a6%e6%88%b0%e5%be%9ettl%e5%88%b0%e9%81%8e%e6%9c%9f%e6%97%a5%e8%aa%8c%e7%ae%a1%e7%90%86%ef%bc%88ttl-redis%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129091\/","title":{"rendered":"Redis\u5be6\u6230\u5f9eTTL\u5230\u904e\u671f\u65e5\u8a8c\u7ba1\u7406\uff08ttl redis\uff09"},"content":{"rendered":"

Redis\u5be6\u6230\u5f9eTTL\u5230\u904e\u671f\u65e5\u8a8c\u7ba1\u7406\uff08ttl redis\uff09<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\u3002\u5176\u5f37\u5927\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u8f15\u9b06\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u4e2d\u7684TTL\uff08Time To Live\uff09\u529f\u80fd\u53ca\u5176\u5728\u904e\u671f\u65e5\u8a8c\u7ba1\u7406\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n

\u4ec0\u9ebc\u662fTTL\uff1f<\/h2>\n

TTL\u662fRedis\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\uff0c\u7528\u65bc\u8a2d\u7f6e\u9375\u7684\u751f\u5b58\u6642\u9593\u3002\u7576\u4e00\u500b\u9375\u88ab\u8a2d\u7f6e\u4e86TTL\u5f8c\uff0c\u8a72\u9375\u6703\u5728\u6307\u5b9a\u7684\u6642\u9593\u5f8c\u81ea\u52d5\u904e\u671f\u4e26\u88ab\u522a\u9664\u3002\u9019\u5c0d\u65bc\u9700\u8981\u5b9a\u671f\u6e05\u7406\u904e\u671f\u6578\u64da\u7684\u61c9\u7528\u5834\u666f\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u7de9\u5b58\u7cfb\u7d71\u6216\u6703\u8a71\u7ba1\u7406\u3002<\/p>\n

\u5982\u4f55\u8a2d\u7f6eTTL<\/h3>\n

\u5728Redis\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6eTTL\uff1a<\/p>\n

EXPIRE key seconds<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u9375\u201csession:123\u201d\u8a2d\u7f6e\u70ba\u5728300\u79d2\u5f8c\u904e\u671f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
EXPIRE session:123 300<\/code><\/pre>\n
\u6b64\u5916\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528SETEX<\/code>\u547d\u4ee4\u4f86\u540c\u6642\u8a2d\u7f6e\u9375\u7684\u503c\u548cTTL\uff1a<\/p>\n
SETEX session:123 300 \"user_data\"<\/code><\/pre>\n
\u904e\u671f\u65e5\u8a8c\u7ba1\u7406<\/h2>\n
\u904e\u671f\u65e5\u8a8c\u7ba1\u7406\u662f\u6307\u5c0d\u904e\u671f\u9375\u7684\u76e3\u63a7\u548c\u7ba1\u7406\u3002Redis\u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u7b56\u7565\uff1a\u60f0\u6027\u522a\u9664\u548c\u4e3b\u52d5\u522a\u9664\u3002<\/p>\n
\u60f0\u6027\u522a\u9664<\/h3>\n
\u5728\u60f0\u6027\u522a\u9664\u7b56\u7565\u4e2d\uff0cRedis\u53ea\u5728\u8a2a\u554f\u9375\u6642\u6aa2\u67e5\u5176\u662f\u5426\u904e\u671f\u3002\u5982\u679c\u9375\u5df2\u904e\u671f\uff0c\u5247\u6703\u88ab\u522a\u9664\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u662f\u6e1b\u5c11\u4e86\u7cfb\u7d71\u7684\u8ca0\u64d4\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u6703\u5c0e\u81f4\u904e\u671f\u9375\u7684\u7a4d\u7d2f\u3002<\/p>\n
\u4e3b\u52d5\u522a\u9664<\/h3>\n
\u4e3b\u52d5\u522a\u9664\u7b56\u7565\u5247\u662fRedis\u5b9a\u671f\u6aa2\u67e5\u6240\u6709\u9375\uff0c\u4e26\u522a\u9664\u90a3\u4e9b\u5df2\u904e\u671f\u7684\u9375\u3002\u9019\u7a2e\u65b9\u6cd5\u80fd\u5920\u6709\u6548\u5730\u63a7\u5236\u5167\u5b58\u4f7f\u7528\uff0c\u4f46\u6703\u589e\u52a0\u7cfb\u7d71\u7684\u958b\u92b7\u3002<\/p>\n
\u5982\u4f55\u67e5\u770b\u9375\u7684TTL<\/h2>\n
\u8981\u67e5\u770b\u67d0\u500b\u9375\u7684TTL\uff0c\u53ef\u4ee5\u4f7f\u7528TTL<\/code>\u547d\u4ee4\uff1a<\/p>\n
TTL key<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u770b\u201csession:123\u201d\u7684TTL\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
TTL session:123<\/code><\/pre>\n
\u9019\u5c07\u8fd4\u56de\u8a72\u9375\u7684\u5269\u9918\u751f\u5b58\u6642\u9593\uff08\u4ee5\u79d2\u70ba\u55ae\u4f4d\uff09\uff0c\u5982\u679c\u9375\u4e0d\u5b58\u5728\uff0c\u5247\u8fd4\u56de-2\uff1b\u5982\u679c\u9375\u5b58\u5728\u4f46\u6c92\u6709\u8a2d\u7f6eTTL\uff0c\u5247\u8fd4\u56de-1\u3002<\/p>\n
\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n
\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0cTTL\u548c\u904e\u671f\u65e5\u8a8c\u7ba1\u7406\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u5834\u666f\u3002\u4f8b\u5982\uff0c\u5728\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\u4e2d\uff0c\u5546\u54c1\u7684\u4fc3\u92b7\u4fe1\u606f\u53ef\u4ee5\u8a2d\u7f6eTTL\uff0c\u78ba\u4fdd\u5728\u4fc3\u92b7\u7d50\u675f\u5f8c\u81ea\u52d5\u522a\u9664\u3002\u53c8\u5982\uff0c\u5728\u793e\u4ea4\u5a92\u9ad4\u61c9\u7528\u4e2d\uff0c\u7528\u6236\u7684\u6703\u8a71\u4fe1\u606f\u53ef\u4ee5\u8a2d\u7f6eTTL\uff0c\u4ee5\u63d0\u9ad8\u5b89\u5168\u6027\u3002<\/p>\n
\u793a\u4f8b\u4ee3\u78bc<\/h3>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u7684TTL\u529f\u80fd\uff1a<\/p>\n
import redis\n\n# \u9023\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u8a2d\u7f6e\u9375\u503c\u548cTTL\nr.setex(\"user:1000\", 3600, \"user_data\")\n\n# \u67e5\u770bTTL\nttl = r.ttl(\"user:1000\")\nprint(f\"TTL for user:1000 is {ttl} seconds\")\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
Redis\u7684TTL\u529f\u80fd\u548c\u904e\u671f\u65e5\u8a8c\u7ba1\u7406\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u7ba1\u7406\u65b9\u5f0f\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6eTTL\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u6578\u64da\u7684\u751f\u547d\u5468\u671f\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002\u7121\u8ad6\u662f\u5728\u7de9\u5b58\u7cfb\u7d71\u9084\u662f\u6703\u8a71\u7ba1\u7406\u4e2d\uff0c\u9019\u4e9b\u529f\u80fd\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u61c9\u7528\u4e2d\u5be6\u73fe\u9019\u4e9b\u529f\u80fd\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6216\u662f\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u9999\u6e2fVPS<\/a>\u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Redis\u5be6\u6230\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406TTL\u8207\u904e\u671f\u65e5\u8a8c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u8207\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-129091","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129091","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=129091"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129091\/revisions"}],"predecessor-version":[{"id":129092,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129091\/revisions\/129092"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129091"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129091"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}