{"id":103569,"date":"2024-10-22T15:49:00","date_gmt":"2024-10-22T07:49:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/103569\/"},"modified":"2024-10-22T15:49:01","modified_gmt":"2024-10-22T07:49:01","slug":"redis-%e9%81%8e%e6%9c%9f%e5%a4%9a%e7%b7%9a%e7%a8%8b%e8%a7%a3%e6%b1%ba%e5%bb%b6%e9%81%b2%e5%95%8f%e9%a1%8c%e7%9a%84%e6%96%b0%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/103569\/","title":{"rendered":"Redis \u904e\u671f\u591a\u7dda\u7a0b\u89e3\u6c7a\u5ef6\u9072\u554f\u984c\u7684\u65b0\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"redis-%e9%81%8e%e6%9c%9f%e5%a4%9a%e7%b7%9a%e7%a8%8b%e8%a7%a3%e6%b1%ba%e5%bb%b6%e9%81%b2%e5%95%8f%e9%a1%8c%e7%9a%84%e6%96%b0%e6%96%b9%e6%b3%95-neDBladvTF\">Redis \u904e\u671f\u591a\u7dda\u7a0b\u89e3\u6c7a\u5ef6\u9072\u554f\u984c\u7684\u65b0\u65b9\u6cd5<\/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\uff0c\u5305\u62ec\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u8655\u7406\u3002\u7136\u800c\uff0c\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u64f4\u5c55\uff0cRedis \u7684\u904e\u671f\u9375\u7ba1\u7406\u53ef\u80fd\u6703\u5c0e\u81f4\u5ef6\u9072\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e Redis \u904e\u671f\u9375\u7684\u5ef6\u9072\u554f\u984c\u53ca\u5176\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-neDBladvTF\">Redis \u7684\u904e\u671f\u9375\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u5169\u7a2e\u4e3b\u8981\u7684\u904e\u671f\u9375\u7ba1\u7406\u6a5f\u5236\uff1a\u5b9a\u671f\u522a\u9664\u548c\u60f0\u6027\u522a\u9664\u3002\u5b9a\u671f\u522a\u9664\u662f\u6307 Redis \u6703\u5728\u56fa\u5b9a\u7684\u6642\u9593\u9593\u9694\u5167\u96a8\u6a5f\u6aa2\u67e5\u4e00\u90e8\u5206\u9375\uff0c\u4e26\u522a\u9664\u904e\u671f\u7684\u9375\uff1b\u800c\u60f0\u6027\u522a\u9664\u5247\u662f\u5728\u8a2a\u554f\u9375\u6642\u6aa2\u67e5\u5176\u662f\u5426\u904e\u671f\uff0c\u82e5\u904e\u671f\u5247\u522a\u9664\u3002<\/p>\n<p>\u9019\u5169\u7a2e\u65b9\u6cd5\u96d6\u7136\u6709\u6548\uff0c\u4f46\u5728\u9ad8\u4e26\u767c\u7684\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u74f6\u9838\u3002\u7279\u5225\u662f\u5728\u5927\u91cf\u9375\u540c\u6642\u904e\u671f\u7684\u60c5\u6cc1\u4e0b\uff0cRedis \u9700\u8981\u82b1\u8cbb\u5927\u91cf\u6642\u9593\u4f86\u8655\u7406\u9019\u4e9b\u904e\u671f\u9375\uff0c\u5f9e\u800c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e5%bb%b6%e9%81%b2%e5%95%8f%e9%a1%8c%e7%9a%84%e6%a0%b9%e6%ba%90-neDBladvTF\">\u5ef6\u9072\u554f\u984c\u7684\u6839\u6e90<\/h2>\n<p>\u5ef6\u9072\u554f\u984c\u7684\u6839\u6e90\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u4e26\u767c\u8a2a\u554f\uff1a<\/strong>\u7576\u591a\u500b\u7dda\u7a0b\u540c\u6642\u8a2a\u554f Redis \u6642\uff0c\u904e\u671f\u9375\u7684\u6aa2\u67e5\u548c\u522a\u9664\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u7af6\u722d\uff0c\u5f9e\u800c\u589e\u52a0\u5ef6\u9072\u3002<\/li>\n<li><strong>\u9375\u7684\u6578\u91cf\uff1a<\/strong>\u5982\u679c\u6709\u5927\u91cf\u7684\u9375\u540c\u6642\u904e\u671f\uff0cRedis \u9700\u8981\u5728\u77ed\u6642\u9593\u5167\u8655\u7406\u9019\u4e9b\u9375\uff0c\u9019\u6703\u5c0e\u81f4 CPU \u548c\u5167\u5b58\u7684\u9ad8\u8ca0\u8f09\u3002<\/li>\n<li><strong>\u4e0d\u5747\u52fb\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u5982\u679c\u904e\u671f\u6642\u9593\u5206\u4f48\u4e0d\u5747\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u67d0\u4e9b\u6642\u9593\u6bb5\u5167\u7684\u904e\u671f\u9375\u6fc0\u589e\uff0c\u9032\u4e00\u6b65\u52a0\u5287\u5ef6\u9072\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%9a%e5%a4%9a%e7%b7%9a%e7%a8%8b%e9%81%8e%e6%9c%9f%e9%8d%b5%e7%ae%a1%e7%90%86-neDBladvTF\">\u89e3\u6c7a\u65b9\u6848\uff1a\u591a\u7dda\u7a0b\u904e\u671f\u9375\u7ba1\u7406<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a\u4e0a\u8ff0\u554f\u984c\uff0c\u6700\u8fd1\u6709\u4e00\u4e9b\u65b0\u65b9\u6cd5\u88ab\u63d0\u51fa\u4f86\uff0c\u7279\u5225\u662f\u91dd\u5c0d\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u7684\u904e\u671f\u9375\u7ba1\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%88%aa%e9%99%a4%e9%81%8e%e6%9c%9f%e9%8d%b5-neDBladvTF\">1. \u4f7f\u7528\u591a\u7dda\u7a0b\u522a\u9664\u904e\u671f\u9375<\/h3>\n<p>\u901a\u904e\u5c07\u904e\u671f\u9375\u7684\u522a\u9664\u64cd\u4f5c\u5206\u914d\u7d66\u591a\u500b\u7dda\u7a0b\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u55ae\u500b\u7dda\u7a0b\u7684\u8ca0\u64d4\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u904e\u671f\u9375\u7684\u8655\u7406\u901f\u5ea6\uff0c\u5f9e\u800c\u964d\u4f4e\u5ef6\u9072\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u7247\u6bb5\u4f86\u5be6\u73fe\u591a\u7dda\u7a0b\u522a\u9664\uff1a<\/p>\n<pre><code>\nimport threading\nimport redis\n\ndef delete_expired_keys(redis_client):\n    while True:\n        # \u96a8\u6a5f\u9078\u64c7\u4e00\u500b\u9375\u9032\u884c\u522a\u9664\n        key = redis_client.randomkey()\n        if key and redis_client.ttl(key) &lt; 0:\n            redis_client.delete(key)\n\n# \u5275\u5efa Redis \u5ba2\u6236\u7aef\nclient = redis.StrictRedis(host=&#039;localhost&#039;, port=6379)\n\n# \u5275\u5efa\u591a\u500b\u7dda\u7a0b\nthreads = []\nfor i in range(5):\n    thread = threading.Thread(target=delete_expired_keys, args=(client,))\n    threads.append(thread)\n    thread.start()\n\nfor thread in threads:\n    thread.join()\n<\/code><\/pre>\n<h3 id=\"2-%e5%8b%95%e6%85%8b%e8%aa%bf%e6%95%b4%e9%81%8e%e6%9c%9f%e6%aa%a2%e6%9f%a5%e9%a0%bb%e7%8e%87-neDBladvTF\">2. \u52d5\u614b\u8abf\u6574\u904e\u671f\u6aa2\u67e5\u983b\u7387<\/h3>\n<p>\u6839\u64da\u7cfb\u7d71\u7684\u8ca0\u8f09\u60c5\u6cc1\u52d5\u614b\u8abf\u6574\u904e\u671f\u6aa2\u67e5\u7684\u983b\u7387\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u9ad8\u5cf0\u671f\u7684\u5ef6\u9072\u3002\u4f8b\u5982\uff0c\u5728\u7cfb\u7d71\u8ca0\u8f09\u8f03\u9ad8\u6642\uff0c\u53ef\u4ee5\u6e1b\u5c11\u6aa2\u67e5\u983b\u7387\uff0c\u800c\u5728\u8ca0\u8f09\u8f03\u4f4e\u6642\u5247\u589e\u52a0\u6aa2\u67e5\u983b\u7387\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-redis-%e9%9b%86%e7%be%a4-neDBladvTF\">3. \u4f7f\u7528 Redis \u96c6\u7fa4<\/h3>\n<p>\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b Redis \u5be6\u4f8b\u4e2d\uff0c\u53ef\u4ee5\u6e1b\u5c11\u55ae\u500b\u5be6\u4f8b\u7684\u8ca0\u64d4\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u6027\u80fd\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u5206\u6563\u904e\u671f\u9375\u7684\u8655\u7406\uff0c\u964d\u4f4e\u5ef6\u9072\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-neDBladvTF\">\u7d50\u8ad6<\/h2>\n<p>Redis \u7684\u904e\u671f\u9375\u7ba1\u7406\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\u53ef\u80fd\u6703\u5c0e\u81f4\u5ef6\u9072\u554f\u984c\uff0c\u4f46\u901a\u904e\u63a1\u7528\u591a\u7dda\u7a0b\u522a\u9664\u3001\u52d5\u614b\u8abf\u6574\u6aa2\u67e5\u983b\u7387\u548c\u4f7f\u7528 Redis \u96c6\u7fa4\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\u3002\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\uff0c\u672a\u4f86\u53ef\u80fd\u6703\u51fa\u73fe\u66f4\u591a\u5275\u65b0\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u512a\u5316 Redis \u7684\u6027\u80fd\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u904e\u671f\u591a\u7dda\u7a0b\u7684\u65b0\u65b9\u6cd5\uff0c\u89e3\u6c7a\u5ef6\u9072\u554f\u984c\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u8655\u7406\u9ad4\u9a57\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-103569","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/103569","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=103569"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/103569\/revisions"}],"predecessor-version":[{"id":103570,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/103569\/revisions\/103570"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=103569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=103569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=103569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}