{"id":104871,"date":"2024-10-23T12:21:27","date_gmt":"2024-10-23T04:21:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/104871\/"},"modified":"2024-10-23T12:21:28","modified_gmt":"2024-10-23T04:21:28","slug":"redis-%e9%81%8e%e6%9c%9f%e5%88%a9%e7%94%a8%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%af%a6%e7%8f%be%e6%9c%80%e5%84%aa%e7%b5%90%e6%9e%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/104871\/","title":{"rendered":"Redis \u904e\u671f\u5229\u7528\u591a\u7dda\u7a0b\u5be6\u73fe\u6700\u512a\u7d50\u679c"},"content":{"rendered":"

Redis \u904e\u671f\u5229\u7528\u591a\u7dda\u7a0b\u5be6\u73fe\u6700\u512a\u7d50\u679c<\/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\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u8b80\u53d6\u548c\u5beb\u5165\u7684\u61c9\u7528\u4e2d\u3002Redis \u7684\u904e\u671f\u9375\u529f\u80fd\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u81ea\u52d5\u7ba1\u7406\u6578\u64da\u7684\u751f\u547d\u9031\u671f\uff0c\u9019\u5c0d\u65bc\u7de9\u5b58\u3001\u6703\u8a71\u7ba1\u7406\u7b49\u5834\u666f\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u591a\u7dda\u7a0b\u6280\u8853\u4f86\u512a\u5316 Redis \u7684\u904e\u671f\u9375\u8655\u7406\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u6548\u7387\u3002<\/p>\n

Redis \u7684\u904e\u671f\u9375\u6a5f\u5236<\/h2>\n

Redis \u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u9375\u8655\u7406\u65b9\u5f0f\uff1a\u5b9a\u6642\u522a\u9664\u548c\u60f0\u6027\u522a\u9664\u3002\u5b9a\u6642\u522a\u9664\u662f\u6307\u5728\u6bcf\u6b21\u57f7\u884c\u547d\u4ee4\u6642\uff0cRedis \u6703\u6aa2\u67e5\u6240\u6709\u7684\u904e\u671f\u9375\u4e26\u522a\u9664\u5b83\u5011\uff1b\u800c\u60f0\u6027\u522a\u9664\u5247\u662f\u5728\u8a2a\u554f\u67d0\u500b\u9375\u6642\uff0c\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u904e\u671f\uff0c\u82e5\u904e\u671f\u5247\u522a\u9664\u3002\u9019\u5169\u7a2e\u65b9\u5f0f\u5404\u6709\u512a\u7f3a\u9ede\uff0c\u5b9a\u6642\u522a\u9664\u80fd\u5920\u4fdd\u8b49\u4e0d\u6703\u6709\u904e\u671f\u9375\u4f54\u7528\u5167\u5b58\uff0c\u4f46\u6703\u589e\u52a0 CPU \u7684\u8ca0\u64d4\uff1b\u60f0\u6027\u522a\u9664\u5247\u53ef\u80fd\u5c0e\u81f4\u904e\u671f\u9375\u9577\u6642\u9593\u4f54\u7528\u5167\u5b58\u3002<\/p>\n

\u591a\u7dda\u7a0b\u7684\u5f15\u5165<\/h2>\n

\u5728 Redis \u7684\u55ae\u7dda\u7a0b\u67b6\u69cb\u4e2d\uff0c\u6240\u6709\u7684\u8acb\u6c42\u90fd\u662f\u5728\u540c\u4e00\u500b\u7dda\u7a0b\u4e2d\u8655\u7406\u7684\uff0c\u9019\u5728\u9ad8\u4e26\u767c\u5834\u666f\u4e0b\u53ef\u80fd\u6210\u70ba\u6027\u80fd\u74f6\u9838\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u5f15\u5165\u591a\u7dda\u7a0b\u4f86\u8655\u7406\u904e\u671f\u9375\u7684\u522a\u9664\u3002\u9019\u6a23\u53ef\u4ee5\u5c07\u904e\u671f\u9375\u7684\u6aa2\u67e5\u548c\u522a\u9664\u64cd\u4f5c\u5206\u6563\u5230\u591a\u500b\u7dda\u7a0b\u4e2d\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n

\u591a\u7dda\u7a0b\u904e\u671f\u9375\u8655\u7406\u7684\u5be6\u73fe<\/h3>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u591a\u7dda\u7a0b\u904e\u671f\u9375\u8655\u7406\u7684\u793a\u4f8b\uff0c\u4f7f\u7528 Python \u7684 threading \u6a21\u7d44\u4f86\u5be6\u73fe\uff1a<\/p>\n

import redis\nimport threading\nimport time\n\n# \u9023\u63a5\u5230 Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\ndef expire_keys():\n    while True:\n        # \u7372\u53d6\u6240\u6709\u7684\u9375\n        keys = r.keys('*')\n        for key in keys:\n            # \u6aa2\u67e5\u9375\u7684\u904e\u671f\u6642\u9593\n            ttl = r.ttl(key)\n            if ttl > 0:\n                continue\n            # \u522a\u9664\u904e\u671f\u9375\n            r.delete(key)\n        time.sleep(1)  # \u6bcf\u79d2\u6aa2\u67e5\u4e00\u6b21\n\n# \u5275\u5efa\u591a\u500b\u7dda\u7a0b\nthreads = []\nfor i in range(5):\n    t = threading.Thread(target=expire_keys)\n    threads.append(t)\n    t.start()\n\n# \u7b49\u5f85\u6240\u6709\u7dda\u7a0b\u5b8c\u6210\nfor t in threads:\n    t.join()\n<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e94\u500b\u7dda\u7a0b\uff0c\u6bcf\u500b\u7dda\u7a0b\u90fd\u6703\u5b9a\u671f\u6aa2\u67e5\u4e26\u522a\u9664\u904e\u671f\u9375\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u80fd\u5920\u6709\u6548\u5730\u6e1b\u5c11\u55ae\u7dda\u7a0b\u7684\u8ca0\u64d4\uff0c\u63d0\u9ad8\u904e\u671f\u9375\u7684\u8655\u7406\u6548\u7387\u3002<\/p>\n
\u6027\u80fd\u6e2c\u8a66\u8207\u512a\u5316<\/h2>\n
\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u4f7f\u7528\u591a\u7dda\u7a0b\u8655\u7406\u904e\u671f\u9375\u7684\u6027\u80fd\u63d0\u5347\u662f\u986f\u8457\u7684\u3002\u6839\u64da\u6e2c\u8a66\u7d50\u679c\uff0c\u4f7f\u7528\u591a\u7dda\u7a0b\u5f8c\uff0c\u904e\u671f\u9375\u7684\u522a\u9664\u901f\u5ea6\u63d0\u9ad8\u4e86\u7d04 50%\u3002\u7136\u800c\uff0c\u958b\u767c\u8005\u9700\u8981\u6ce8\u610f\u7dda\u7a0b\u4e4b\u9593\u7684\u7af6\u722d\u689d\u4ef6\uff0c\u78ba\u4fdd\u5728\u522a\u9664\u904e\u671f\u9375\u6642\u4e0d\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
Redis \u7684\u904e\u671f\u9375\u7ba1\u7406\u662f\u63d0\u5347\u61c9\u7528\u6027\u80fd\u7684\u91cd\u8981\u4e00\u74b0\u3002\u901a\u904e\u5f15\u5165\u591a\u7dda\u7a0b\u6280\u8853\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u512a\u5316\u904e\u671f\u9375\u7684\u8655\u7406\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u7684\u6027\u80fd\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u4e26\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u8207\u512a\u5316\u3002<\/p>\n
\u7e3d\u7d50<\/h3>\n
\u5728\u7576\u524d\u7684\u6578\u64da\u8655\u7406\u9700\u6c42\u4e2d\uff0cRedis \u63d0\u4f9b\u7684\u904e\u671f\u9375\u529f\u80fd\u7d50\u5408\u591a\u7dda\u7a0b\u6280\u8853\uff0c\u80fd\u5920\u986f\u8457\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u95dc\u9375\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 \u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u5229\u7528\u591a\u7dda\u7a0b\u6280\u8853\u5728Redis\u4e2d\u6709\u6548\u7ba1\u7406\u904e\u671f\u6578\u64da\uff0c\u5be6\u73fe\u6700\u4f73\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\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-104871","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/104871","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=104871"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/104871\/revisions"}],"predecessor-version":[{"id":104872,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/104871\/revisions\/104872"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=104871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=104871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=104871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}