{"id":154989,"date":"2024-11-02T18:21:20","date_gmt":"2024-11-02T10:21:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154989\/"},"modified":"2024-11-02T18:21:21","modified_gmt":"2024-11-02T10:21:21","slug":"%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%af%a6%e7%8f%be-redis-%e7%9a%84%e9%81%8e%e6%9c%9f%e6%95%b8%e6%93%9a%e8%99%95%e7%90%86%ef%bc%88redis-%e9%81%8e%e6%9c%9f-%e5%a4%9a%e7%b7%9a%e7%a8%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154989\/","title":{"rendered":"\u591a\u7dda\u7a0b\u5be6\u73fe Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\uff08Redis \u904e\u671f \u591a\u7dda\u7a0b\uff09"},"content":{"rendered":"

\u591a\u7dda\u7a0b\u5be6\u73fe Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\uff08Redis \u904e\u671f \u591a\u7dda\u7a0b\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\u6578\u64da\u8655\u7406\u529f\u80fd\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u81ea\u52d5\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u5f9e\u800c\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u548c\u63d0\u9ad8\u6027\u80fd\u3002\u96a8\u8457\u61c9\u7528\u9700\u6c42\u7684\u589e\u9577\uff0c\u5982\u4f55\u9ad8\u6548\u5730\u8655\u7406\u904e\u671f\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u591a\u7dda\u7a0b\u6280\u8853\u4f86\u512a\u5316 Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\u3002<\/p>\n

Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\u6a5f\u5236<\/h2>\n

Redis \u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u6578\u64da\u8655\u7406\u6a5f\u5236\uff1a\u5b9a\u6642\u522a\u9664\u548c\u60f0\u6027\u522a\u9664\u3002\u5b9a\u6642\u522a\u9664\u662f\u6307 Redis \u5728\u6bcf\u6b21\u57f7\u884c\u7684\u6642\u5019\uff0c\u6703\u6aa2\u67e5\u6240\u6709\u7684\u9375\uff0c\u522a\u9664\u904e\u671f\u7684\u9375\uff1b\u800c\u60f0\u6027\u522a\u9664\u5247\u662f\u5728\u7528\u6236\u8a2a\u554f\u67d0\u500b\u9375\u6642\uff0c\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u904e\u671f\uff0c\u82e5\u904e\u671f\u5247\u522a\u9664\u3002<\/p>\n

\u9019\u5169\u7a2e\u65b9\u6cd5\u5404\u6709\u512a\u7f3a\u9ede\u3002\u5b9a\u6642\u522a\u9664\u7684\u65b9\u5f0f\u96d6\u7136\u80fd\u5920\u5b9a\u671f\u6e05\u7406\u904e\u671f\u6578\u64da\uff0c\u4f46\u5728\u9ad8\u4e26\u767c\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u800c\u60f0\u6027\u522a\u9664\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u904e\u671f\u6578\u64da\u5728\u4e00\u6bb5\u6642\u9593\u5167\u4ecd\u7136\u4f54\u7528\u5167\u5b58\u3002\u56e0\u6b64\uff0c\u5982\u4f55\u5728\u9ad8\u6548\u80fd\u7684\u60c5\u6cc1\u4e0b\u8655\u7406\u904e\u671f\u6578\u64da\u6210\u70ba\u4e86\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u7684\u554f\u984c\u3002<\/p>\n

\u591a\u7dda\u7a0b\u7684\u512a\u52e2<\/h2>\n

\u591a\u7dda\u7a0b\u6280\u8853\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u7a0b\u5e8f\u7684\u57f7\u884c\u6548\u7387\uff0c\u7279\u5225\u662f\u5728\u8655\u7406 I\/O \u5bc6\u96c6\u578b\u4efb\u52d9\u6642\u3002\u5c0d\u65bc Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\uff0c\u591a\u7dda\u7a0b\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u5728\u4e0d\u5f71\u97ff\u4e3b\u7dda\u7a0b\u6027\u80fd\u7684\u60c5\u6cc1\u4e0b\uff0c\u4e26\u884c\u5730\u8655\u7406\u904e\u671f\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7684\u6578\u64da\u8655\u7406\u6548\u7387\u3002<\/p>\n

\u5be6\u73fe\u591a\u7dda\u7a0b\u904e\u671f\u6578\u64da\u8655\u7406<\/h2>\n

\u5728 Redis \u4e2d\u5be6\u73fe\u591a\u7dda\u7a0b\u904e\u671f\u6578\u64da\u8655\u7406\uff0c\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n

1. \u8a2d\u7f6e\u904e\u671f\u6642\u9593<\/h3>\n

\u9996\u5148\uff0c\u7576\u6211\u5011\u8a2d\u7f6e\u4e00\u500b\u9375\u7684\u503c\u6642\uff0c\u53ef\u4ee5\u540c\u6642\u8a2d\u7f6e\u5176\u904e\u671f\u6642\u9593\u3002\u4f8b\u5982\uff1a<\/p>\n

SET mykey \"Hello\"\nEXPIRE mykey 10<\/code><\/pre>\n
\u9019\u6a23\uff0cmykey \u5c07\u5728 10 \u79d2\u5f8c\u81ea\u52d5\u904e\u671f\u3002<\/p>\n
2. \u5275\u5efa\u591a\u7dda\u7a0b\u4efb\u52d9<\/h3>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u591a\u7dda\u7a0b\u4f86\u5b9a\u671f\u6aa2\u67e5\u548c\u522a\u9664\u904e\u671f\u7684\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 Python \u793a\u4f8b\uff0c\u4f7f\u7528 threading \u6a21\u7d44\u4f86\u5be6\u73fe\uff1a<\/p>\n
import redis\nimport threading\nimport time\n\ndef delete_expired_keys(redis_client):\n    while True:\n        # \u7372\u53d6\u6240\u6709\u9375\n        keys = redis_client.keys()\n        for key in keys:\n            # \u6aa2\u67e5\u9375\u662f\u5426\u904e\u671f\n            if redis_client.ttl(key) == -1:\n                continue\n            elif redis_client.ttl(key) == 0:\n                redis_client.delete(key)\n        time.sleep(5)  # \u6bcf5\u79d2\u6aa2\u67e5\u4e00\u6b21\n\nif __name__ == \"__main__\":\n    r = redis.Redis(host='localhost', port=6379, db=0)\n    thread = threading.Thread(target=delete_expired_keys, args=(r,))\n    thread.start()\n<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba delete_expired_keys \u7684\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u6703\u5b9a\u671f\u6aa2\u67e5 Redis \u4e2d\u7684\u6240\u6709\u9375\uff0c\u4e26\u522a\u9664\u904e\u671f\u7684\u9375\u3002\u901a\u904e\u4f7f\u7528\u591a\u7dda\u7a0b\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u4e3b\u7dda\u7a0b\u4e2d\u7e7c\u7e8c\u8655\u7406\u5176\u4ed6\u8acb\u6c42\uff0c\u800c\u4e0d\u6703\u56e0\u70ba\u904e\u671f\u6578\u64da\u7684\u8655\u7406\u800c\u5f71\u97ff\u6027\u80fd\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u591a\u7dda\u7a0b\u6280\u8853\u70ba Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5408\u7406\u5730\u8a2d\u8a08\u591a\u7dda\u7a0b\u4efb\u52d9\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\u6709\u6548\u5730\u7ba1\u7406\u904e\u671f\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u3002\u96a8\u8457\u61c9\u7528\u9700\u6c42\u7684\u589e\u9577\uff0c\u5c0d\u65bc Redis \u7684\u4f7f\u7528\u8005\u4f86\u8aaa\uff0c\u638c\u63e1\u9019\u4e9b\u6280\u8853\u5c07\u6709\u52a9\u65bc\u66f4\u597d\u5730\u5229\u7528\u9019\u4e00\u5f37\u5927\u7684\u6578\u64da\u5eab\u3002<\/p>\n
\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc VPS<\/a> \u548c \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u591a\u7dda\u7a0b\u5982\u4f55\u5be6\u73fe Redis \u7684\u904e\u671f\u6578\u64da\u8655\u7406\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u7ba1\u7406\u7b56\u7565\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-154989","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154989","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=154989"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154989\/revisions"}],"predecessor-version":[{"id":154990,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/154989\/revisions\/154990"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=154989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=154989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=154989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}