{"id":103879,"date":"2024-10-22T16:19:12","date_gmt":"2024-10-22T08:19:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/103879\/"},"modified":"2024-10-22T16:19:13","modified_gmt":"2024-10-22T08:19:13","slug":"redis-%e9%81%8e%e6%9c%9f%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%84%aa%e5%8c%96%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/103879\/","title":{"rendered":"Redis \u904e\u671f\u591a\u7dda\u7a0b\u512a\u5316\u89e3\u6c7a\u65b9\u6848"},"content":{"rendered":"<h1 id=\"redis-%e9%81%8e%e6%9c%9f%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%84%aa%e5%8c%96%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-UUOUONZZSl\">Redis \u904e\u671f\u591a\u7dda\u7a0b\u512a\u5316\u89e3\u6c7a\u65b9\u6848<\/h1>\n<p>\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\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\u7136\u800c\uff0c\u96a8\u8457\u61c9\u7528\u7684\u64f4\u5c55\uff0c\u5982\u4f55\u6709\u6548\u5730\u8655\u7406\u904e\u671f\u9375\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u904e\u671f\u591a\u7dda\u7a0b\u512a\u5316\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e9%81%8e%e6%9c%9f%e9%8d%b5%e6%a9%9f%e5%88%b6-UUOUONZZSl\">Redis \u7684\u904e\u671f\u9375\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u9375\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\u904e\u671f\u9375\u4e26\u5c07\u5176\u522a\u9664\uff1b\u800c\u60f0\u6027\u522a\u9664\u5247\u662f\u5728\u5ba2\u6236\u7aef\u8acb\u6c42\u6642\uff0c\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u904e\u671f\uff0c\u82e5\u904e\u671f\u5247\u522a\u9664\u3002\u9019\u5169\u7a2e\u65b9\u6cd5\u5404\u6709\u512a\u7f3a\u9ede\uff0c\u4f46\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e0b\uff0c\u9019\u4e9b\u65b9\u6cd5\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%84%aa%e5%8c%96%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-UUOUONZZSl\">\u591a\u7dda\u7a0b\u512a\u5316\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u5834\u666f\u4e2d\uff0c\u55ae\u7dda\u7a0b\u7684\u904e\u671f\u9375\u8655\u7406\u53ef\u80fd\u6703\u5c0e\u81f4\u5ef6\u9072\uff0c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002\u7279\u5225\u662f\u5728\u5927\u91cf\u9375\u9700\u8981\u88ab\u6aa2\u67e5\u548c\u522a\u9664\u7684\u60c5\u6cc1\u4e0b\uff0c\u9019\u7a2e\u5ef6\u9072\u6703\u66f4\u52a0\u660e\u986f\u3002\u56e0\u6b64\uff0c\u63a1\u7528\u591a\u7dda\u7a0b\u4f86\u8655\u7406\u904e\u671f\u9375\u7684\u6aa2\u67e5\u548c\u522a\u9664\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e7%b7%9a%e7%a8%8b%e9%81%8e%e6%9c%9f%e9%8d%b5%e8%99%95%e7%90%86%e7%9a%84%e5%af%a6%e7%8f%be-UUOUONZZSl\">\u591a\u7dda\u7a0b\u904e\u671f\u9375\u8655\u7406\u7684\u5be6\u73fe<\/h2>\n<p>Redis \u672c\u8eab\u662f\u55ae\u7dda\u7a0b\u7684\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u5916\u90e8\u7684\u591a\u7dda\u7a0b\u61c9\u7528\u4f86\u5be6\u73fe\u904e\u671f\u9375\u7684\u512a\u5316\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5be6\u73fe\u601d\u8def\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 Redis \u7684 <code>SCAN<\/code> \u547d\u4ee4\u4f86\u904d\u6b77\u6240\u6709\u9375\u3002<\/li>\n<li>\u5c07\u9375\u5206\u914d\u7d66\u591a\u500b\u7dda\u7a0b\u9032\u884c\u8655\u7406\u3002<\/li>\n<li>\u6bcf\u500b\u7dda\u7a0b\u6aa2\u67e5\u5176\u5206\u914d\u7684\u9375\u662f\u5426\u904e\u671f\uff0c\u4e26\u9032\u884c\u522a\u9664\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-UUOUONZZSl\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nimport redis\nimport threading\nimport time\n\n# Redis \u9023\u63a5\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\ndef check_expired_keys(start_cursor):\n    cursor = start_cursor\n    while cursor != 0:\n        cursor, keys = r.scan(cursor)\n        for key in keys:\n            if r.ttl(key) &lt; 0:  # \u6aa2\u67e5\u9375\u662f\u5426\u904e\u671f\n                r.delete(key)  # \u522a\u9664\u904e\u671f\u9375\n\n# \u5275\u5efa\u591a\u500b\u7dda\u7a0b\nthreads = []\nfor i in range(5):  # \u5047\u8a2d\u4f7f\u75285\u500b\u7dda\u7a0b\n    t = threading.Thread(target=check_expired_keys, args=(0,))\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<h2 id=\"%e6%80%a7%e8%83%bd%e6%b8%ac%e8%a9%a6-UUOUONZZSl\">\u6027\u80fd\u6e2c\u8a66<\/h2>\n<p>\u5728\u5be6\u65bd\u591a\u7dda\u7a0b\u512a\u5316\u5f8c\uff0c\u61c9\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u4ee5\u8a55\u4f30\u6539\u9032\u6548\u679c\u3002\u53ef\u4ee5\u4f7f\u7528 Redis \u7684 <code>MONITOR<\/code> \u547d\u4ee4\u4f86\u89c0\u5bdf\u547d\u4ee4\u7684\u57f7\u884c\u6642\u9593\uff0c\u4e26\u8207\u55ae\u7dda\u7a0b\u7684\u57f7\u884c\u6642\u9593\u9032\u884c\u6bd4\u8f03\u3002\u901a\u5e38\u60c5\u6cc1\u4e0b\uff0c\u591a\u7dda\u7a0b\u7684\u5be6\u73fe\u80fd\u5920\u986f\u8457\u964d\u4f4e\u904e\u671f\u9375\u7684\u8655\u7406\u6642\u9593\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-UUOUONZZSl\">\u7d50\u8ad6<\/h2>\n<p>Redis \u7684\u904e\u671f\u9375\u7ba1\u7406\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\u53ef\u80fd\u6703\u6210\u70ba\u6027\u80fd\u74f6\u9838\uff0c\u901a\u904e\u5be6\u65bd\u591a\u7dda\u7a0b\u512a\u5316\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u904e\u671f\u9375\u7684\u8655\u7406\u6548\u7387\u3002\u9019\u4e0d\u50c5\u80fd\u5920\u63d0\u5347\u61c9\u7528\u7684\u97ff\u61c9\u901f\u5ea6\uff0c\u9084\u80fd\u6e1b\u5c11\u8cc7\u6e90\u7684\u6d6a\u8cbb\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u9019\u662f\u4e00\u500b\u503c\u5f97\u8003\u616e\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u904e\u671f\u591a\u7dda\u7a0b\u512a\u5316\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u9ad8\u6027\u80fd\u8207\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u7ba1\u7406\u66f4\u6d41\u66a2\uff0c\u9069\u61c9\u9ad8\u4e26\u767c\u9700\u6c42\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-103879","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/103879","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=103879"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/103879\/revisions"}],"predecessor-version":[{"id":103880,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/103879\/revisions\/103880"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=103879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=103879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=103879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}