{"id":129627,"date":"2024-10-26T23:06:21","date_gmt":"2024-10-26T15:06:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/129627\/"},"modified":"2024-10-26T23:06:21","modified_gmt":"2024-10-26T15:06:21","slug":"redis%e6%8c%96%e6%8e%98%e8%b6%85%e6%99%82%e7%a5%9e%e7%a7%98%e4%ba%8b%e4%bb%b6%ef%bc%88%e7%8d%b2%e5%8f%96redis%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/129627\/","title":{"rendered":"Redis\u6316\u6398\u8d85\u6642\u795e\u79d8\u4e8b\u4ef6\uff08\u7372\u53d6redis\u904e\u671f\u4e8b\u4ef6\uff09"},"content":{"rendered":"<h1 id=\"redis%e6%8c%96%e6%8e%98%e8%b6%85%e6%99%82%e7%a5%9e%e7%a7%98%e4%ba%8b%e4%bb%b6%ef%bc%88%e7%8d%b2%e5%8f%96redis%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%ef%bc%89-UHDQpeAazR\">Redis\u6316\u6398\u8d85\u6642\u795e\u79d8\u4e8b\u4ef6\uff08\u7372\u53d6redis\u904e\u671f\u4e8b\u4ef6\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u4e2d\u3002\u5176\u9ad8\u6027\u80fd\u548c\u9748\u6d3b\u6027\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u8f15\u9b06\u5730\u7ba1\u7406\u6578\u64da\u3002\u7136\u800c\uff0cRedis\u7684\u904e\u671f\u9375\uff08expired keys\uff09\u4e8b\u4ef6\u537b\u5e38\u5e38\u88ab\u5ffd\u8996\uff0c\u9019\u4e9b\u4e8b\u4ef6\u5c0d\u65bc\u6027\u80fd\u512a\u5316\u548c\u8cc7\u6e90\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eRedis\u7684\u904e\u671f\u4e8b\u4ef6\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u6355\u7372\u9019\u4e9b\u4e8b\u4ef6\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e9%81%8e%e6%9c%9f%e9%8d%b5%e6%a9%9f%e5%88%b6-UHDQpeAazR\">Redis\u7684\u904e\u671f\u9375\u6a5f\u5236<\/h2>\n<p>Redis\u5141\u8a31\u7528\u6236\u70ba\u9375\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u9019\u610f\u5473\u8457\u5728\u6307\u5b9a\u7684\u6642\u9593\u5f8c\uff0c\u8a72\u9375\u5c07\u81ea\u52d5\u88ab\u522a\u9664\u3002\u9019\u4e00\u7279\u6027\u5728\u7de9\u5b58\u7cfb\u7d71\u4e2d\u5c24\u70ba\u91cd\u8981\uff0c\u56e0\u70ba\u5b83\u80fd\u5920\u81ea\u52d5\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u5f9e\u800c\u91cb\u653e\u5167\u5b58\u8cc7\u6e90\u3002<\/p>\n<p>Redis\u652f\u6301\u5169\u7a2e\u8a2d\u7f6e\u904e\u671f\u6642\u9593\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><code>EXPIRE<\/code>\uff1a\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\uff08\u4ee5\u79d2\u70ba\u55ae\u4f4d\uff09\u3002<\/li>\n<li><code>PEXPIRE<\/code>\uff1a\u8a2d\u7f6e\u9375\u7684\u904e\u671f\u6642\u9593\uff08\u4ee5\u6beb\u79d2\u70ba\u55ae\u4f4d\uff09\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u547d\u4ee4\u5c07\u9375\u201cmykey\u201d\u7684\u904e\u671f\u6642\u9593\u8a2d\u7f6e\u70ba60\u79d2\uff1a<\/p>\n<pre><code>EXPIRE mykey 60<\/code><\/pre>\n<h2 id=\"%e9%81%8e%e6%9c%9f%e4%ba%8b%e4%bb%b6%e7%9a%84%e6%8d%95%e7%8d%b2-UHDQpeAazR\">\u904e\u671f\u4e8b\u4ef6\u7684\u6355\u7372<\/h2>\n<p>Redis\u63d0\u4f9b\u4e86\u5169\u7a2e\u65b9\u5f0f\u4f86\u6355\u7372\u904e\u671f\u4e8b\u4ef6\uff1a\u901a\u904e\u9375\u7a7a\u9593\u901a\u77e5\uff08Keyspace Notifications\uff09\u548c\u4f7f\u7528\u5b9a\u671f\u6383\u63cf\u3002<\/p>\n<h3 id=\"%e9%8d%b5%e7%a9%ba%e9%96%93%e9%80%9a%e7%9f%a5-UHDQpeAazR\">\u9375\u7a7a\u9593\u901a\u77e5<\/h3>\n<p>\u9375\u7a7a\u9593\u901a\u77e5\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u9375\u904e\u671f\u6642\u63a5\u6536\u901a\u77e5\u3002\u8981\u555f\u7528\u9375\u7a7a\u9593\u901a\u77e5\uff0c\u9996\u5148\u9700\u8981\u5728Redis\u914d\u7f6e\u4e2d\u8a2d\u7f6e\u76f8\u61c9\u7684\u9078\u9805\uff1a<\/p>\n<pre><code>notify-keyspace-events Ex<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u7576\u9375\u904e\u671f\u6642\uff0cRedis\u6703\u5728\u7279\u5b9a\u7684\u901a\u9053\u4e0a\u767c\u9001\u901a\u77e5\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u8a02\u95b1\u9019\u4e9b\u901a\u9053\u4f86\u7372\u53d6\u904e\u671f\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8a02\u95b1\u904e\u671f\u4e8b\u4ef6\uff1a<\/p>\n<pre><code>PSUBSCRIBE __keyevent@0__:expired<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7576\u4efb\u4f55\u9375\u5728\u6578\u64da\u5eab0\u4e2d\u904e\u671f\u6642\uff0c\u8a02\u95b1\u8005\u5c07\u6536\u5230\u901a\u77e5\u3002<\/p>\n<h3 id=\"%e5%ae%9a%e6%9c%9f%e6%8e%83%e6%8f%8f-UHDQpeAazR\">\u5b9a\u671f\u6383\u63cf<\/h3>\n<p>\u53e6\u4e00\u7a2e\u6355\u7372\u904e\u671f\u4e8b\u4ef6\u7684\u65b9\u6cd5\u662f\u5b9a\u671f\u6383\u63cfRedis\u6578\u64da\u5eab\u3002Redis\u6703\u5728\u6bcf\u6b21\u57f7\u884c\u547d\u4ee4\u6642\u96a8\u6a5f\u6aa2\u67e5\u4e00\u4e9b\u9375\u7684\u904e\u671f\u72c0\u614b\uff0c\u4e26\u522a\u9664\u904e\u671f\u7684\u9375\u3002\u96d6\u7136\u9019\u7a2e\u65b9\u6cd5\u4e0d\u5982\u9375\u7a7a\u9593\u901a\u77e5\u5373\u6642\uff0c\u4f46\u5b83\u4ecd\u7136\u662f\u4e00\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u78ba\u4fdd\u904e\u671f\u9375\u88ab\u6e05\u7406\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-UHDQpeAazR\">\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u6355\u7372Redis\u904e\u671f\u4e8b\u4ef6\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u9032\u884c\u8cc7\u6e90\u7ba1\u7406\u548c\u6027\u80fd\u512a\u5316\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u904e\u671f\u4e8b\u4ef6\u4f86\u6e05\u7406\u4e0d\u518d\u9700\u8981\u7684\u7528\u6236\u6703\u8a71\u6578\u64da\uff0c\u5f9e\u800c\u91cb\u653e\u5167\u5b58\u4e26\u63d0\u9ad8\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u7684\u9375\u7a7a\u9593\u901a\u77e5\u4f86\u6355\u7372\u904e\u671f\u4e8b\u4ef6\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230Redis\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\n# \u8a02\u95b1\u904e\u671f\u4e8b\u4ef6\np = r.pubsub()\np.psubscribe('__keyevent@0__:expired')\n\n# \u76e3\u807d\u904e\u671f\u4e8b\u4ef6\nfor message in p.listen():\n    if message['type'] == 'pmessage':\n        print(f\"\u9375 {message['data']} \u5df2\u904e\u671f\")\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-UHDQpeAazR\">\u7d50\u8ad6<\/h2>\n<p>Redis\u7684\u904e\u671f\u9375\u6a5f\u5236\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u6578\u64da\u7ba1\u7406\u65b9\u5f0f\u3002\u901a\u904e\u9375\u7a7a\u9593\u901a\u77e5\u548c\u5b9a\u671f\u6383\u63cf\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u6355\u7372\u904e\u671f\u4e8b\u4ef6\uff0c\u5f9e\u800c\u512a\u5316\u7cfb\u7d71\u6027\u80fd\u548c\u8cc7\u6e90\u4f7f\u7528\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5408\u7406\u5229\u7528\u9019\u4e9b\u529f\u80fd\u5c07\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Redis\u904e\u671f\u4e8b\u4ef6\u7684\u5967\u79d8\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7372\u53d6\u548c\u8655\u7406\u8d85\u6642\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-129627","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129627","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=129627"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129627\/revisions"}],"predecessor-version":[{"id":129628,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/129627\/revisions\/129628"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=129627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=129627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=129627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}