{"id":105738,"date":"2024-10-23T13:30:22","date_gmt":"2024-10-23T05:30:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/105738\/"},"modified":"2024-10-23T13:30:23","modified_gmt":"2024-10-23T05:30:23","slug":"redis-%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%e5%af%a6%e6%99%82%e9%80%9a%e7%9f%a5%e6%a9%9f%e5%88%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/105738\/","title":{"rendered":"Redis \u904e\u671f\u4e8b\u4ef6\u5be6\u6642\u901a\u77e5\u6a5f\u5236"},"content":{"rendered":"<h1 id=\"redis-%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%e5%af%a6%e6%99%82%e9%80%9a%e7%9f%a5%e6%a9%9f%e5%88%b6-ANDvfCskTF\">Redis \u904e\u671f\u4e8b\u4ef6\u5be6\u6642\u901a\u77e5\u6a5f\u5236<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u5834\u666f\u3002Redis \u7684\u4e00\u500b\u91cd\u8981\u7279\u6027\u662f\u5176\u652f\u6301\u9375\u7684\u904e\u671f\u6a5f\u5236\uff0c\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u81ea\u52d5\u7ba1\u7406\u6578\u64da\u7684\u751f\u547d\u9031\u671f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u7684\u904e\u671f\u4e8b\u4ef6\u5be6\u6642\u901a\u77e5\u6a5f\u5236\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u5be6\u4f5c\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e9%81%8e%e6%9c%9f%e6%a9%9f%e5%88%b6-ANDvfCskTF\">Redis \u7684\u904e\u671f\u6a5f\u5236<\/h2>\n<p>Redis \u5141\u8a31\u70ba\u6bcf\u500b\u9375\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u7576\u6642\u9593\u5230\u9054\u5f8c\uff0c\u8a72\u9375\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u4e00\u7279\u6027\u5c0d\u65bc\u9700\u8981\u5b9a\u671f\u6e05\u7406\u904e\u671f\u6578\u64da\u7684\u61c9\u7528\u7a0b\u5f0f\u4f86\u8aaa\u975e\u5e38\u6709\u7528\u3002\u904e\u671f\u6642\u9593\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>SET mykey \"value\"\nEXPIRE mykey 10  # \u8a2d\u7f6e mykey \u5728 10 \u79d2\u5f8c\u904e\u671f\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c`mykey` \u5c07\u5728 10 \u79d2\u5f8c\u81ea\u52d5\u522a\u9664\u3002<\/p>\n<h2 id=\"%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%e7%9a%84%e9%80%9a%e7%9f%a5%e6%a9%9f%e5%88%b6-ANDvfCskTF\">\u904e\u671f\u4e8b\u4ef6\u7684\u901a\u77e5\u6a5f\u5236<\/h2>\n<p>Redis \u63d0\u4f9b\u4e86\u5169\u7a2e\u65b9\u5f0f\u4f86\u901a\u77e5\u904e\u671f\u4e8b\u4ef6\uff1a<\/p>\n<ul>\n<li><strong>\u60f0\u6027\u904e\u671f\uff08Lazy Expiration\uff09<\/strong>\uff1a\u7576\u5ba2\u6236\u7aef\u8a2a\u554f\u4e00\u500b\u9375\u6642\uff0cRedis \u6703\u6aa2\u67e5\u8a72\u9375\u662f\u5426\u904e\u671f\u3002\u5982\u679c\u904e\u671f\uff0c\u5247\u522a\u9664\u8a72\u9375\u3002<\/li>\n<li><strong>\u4e3b\u52d5\u904e\u671f\uff08Active Expiration\uff09<\/strong>\uff1aRedis \u6703\u5b9a\u671f\u6aa2\u67e5\u6240\u6709\u8a2d\u7f6e\u4e86\u904e\u671f\u6642\u9593\u7684\u9375\uff0c\u4e26\u522a\u9664\u90a3\u4e9b\u5df2\u7d93\u904e\u671f\u7684\u9375\u3002<\/li>\n<\/ul>\n<p>\u7136\u800c\uff0c\u9019\u5169\u7a2e\u65b9\u5f0f\u90fd\u4e0d\u6703\u4e3b\u52d5\u901a\u77e5\u61c9\u7528\u7a0b\u5f0f\u904e\u671f\u4e8b\u4ef6\u3002\u70ba\u4e86\u5be6\u73fe\u904e\u671f\u4e8b\u4ef6\u7684\u5be6\u6642\u901a\u77e5\uff0cRedis \u63d0\u4f9b\u4e86\u767c\u5e03\/\u8a02\u95b1\uff08Pub\/Sub\uff09\u6a5f\u5236\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-pub-sub-%e5%af%a6%e7%8f%be%e9%81%8e%e6%9c%9f%e9%80%9a%e7%9f%a5-ANDvfCskTF\">\u4f7f\u7528 Pub\/Sub \u5be6\u73fe\u904e\u671f\u901a\u77e5<\/h2>\n<p>Redis \u7684\u904e\u671f\u901a\u77e5\u529f\u80fd\u53ef\u4ee5\u901a\u904e\u914d\u7f6e `notify-keyspace-events` \u53c3\u6578\u4f86\u555f\u7528\u3002\u9019\u500b\u53c3\u6578\u5141\u8a31\u7528\u6236\u9078\u64c7\u8981\u63a5\u6536\u7684\u4e8b\u4ef6\u985e\u578b\uff0c\u5305\u62ec\u904e\u671f\u4e8b\u4ef6\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u555f\u7528\u904e\u671f\u901a\u77e5\u7684\u6b65\u9a5f\uff1a<\/p>\n<pre><code>CONFIG SET notify-keyspace-events Ex\n<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u7576\u9375\u904e\u671f\u6642\uff0cRedis \u5c07\u5728 `__keyevent@0__:expired` \u983b\u9053\u4e0a\u767c\u9001\u901a\u77e5\u3002\u958b\u767c\u8005\u53ef\u4ee5\u8a02\u95b1\u9019\u500b\u983b\u9053\u4f86\u63a5\u6536\u904e\u671f\u4e8b\u4ef6\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b%e4%bb%a3%e7%a2%bc-ANDvfCskTF\">\u7bc4\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Python \u548c Redis-py \u5eab\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u8a02\u95b1\u904e\u671f\u4e8b\u4ef6\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230 Redis\nr = redis.Redis()\n\n# \u8a2d\u7f6e\u904e\u671f\u9375\nr.set('mykey', 'value', ex=10)\n\n# \u8a02\u95b1\u904e\u671f\u4e8b\u4ef6\npubsub = r.pubsub()\npubsub.psubscribe('__keyevent@0__:expired')\n\n# \u76e3\u807d\u4e8b\u4ef6\nfor message in pubsub.listen():\n    if message['type'] == 'pmessage':\n        print(f\"\u9375 {message['data'].decode('utf-8')} \u5df2\u904e\u671f\")\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8a2d\u7f6e\u4e86\u4e00\u500b 10 \u79d2\u5f8c\u904e\u671f\u7684\u9375\uff0c\u7136\u5f8c\u8a02\u95b1\u4e86\u904e\u671f\u4e8b\u4ef6\u7684\u983b\u9053\u3002\u7576\u9375\u904e\u671f\u6642\uff0c\u5c07\u6703\u6253\u5370\u51fa\u76f8\u61c9\u7684\u901a\u77e5\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ANDvfCskTF\">\u7e3d\u7d50<\/h2>\n<p>Redis \u7684\u904e\u671f\u4e8b\u4ef6\u5be6\u6642\u901a\u77e5\u6a5f\u5236\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u7ba1\u7406\u548c\u76e3\u63a7\u6578\u64da\u7684\u751f\u547d\u9031\u671f\u3002\u901a\u904e\u4f7f\u7528 Pub\/Sub \u6a5f\u5236\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u9375\u904e\u671f\u6642\u5373\u6642\u7372\u5f97\u901a\u77e5\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u9748\u6d3b\u7684\u6578\u64da\u8655\u7406\u7b56\u7565\u3002\u9019\u4e00\u7279\u6027\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u5177\u6709\u91cd\u8981\u7684\u5be6\u7528\u50f9\u503c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Redis\u904e\u671f\u4e8b\u4ef6\u5be6\u6642\u901a\u77e5\u6a5f\u5236\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u5be6\u73fe\u5373\u6642\u53cd\u61c9\u8207\u81ea\u52d5\u5316\u8655\u7406\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-105738","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/105738","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=105738"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/105738\/revisions"}],"predecessor-version":[{"id":105739,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/105738\/revisions\/105739"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=105738"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=105738"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=105738"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}