{"id":194969,"date":"2024-11-13T11:06:20","date_gmt":"2024-11-13T03:06:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194969\/"},"modified":"2024-11-13T11:06:21","modified_gmt":"2024-11-13T03:06:21","slug":"%e7%94%a8%e6%88%b6%e5%9f%ba%e6%96%bcredis%e7%9a%84%e5%af%a6%e6%99%82%e5%9c%a8%e7%b7%9a%e7%94%a8%e6%88%b6%e7%b5%b1%e8%a8%88%e5%88%86%e6%9e%90%ef%bc%88redis-%e7%b5%b1%e8%a8%88%e5%9c%a8%e7%b7%9a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194969\/","title":{"rendered":"\u7528\u6236\u57fa\u65bcRedis\u7684\u5be6\u6642\u5728\u7dda\u7528\u6236\u7d71\u8a08\u5206\u6790\uff08redis \u7d71\u8a08\u5728\u7dda\uff09"},"content":{"rendered":"<h1 id=\"%e7%94%a8%e6%88%b6%e5%9f%ba%e6%96%bcredis%e7%9a%84%e5%af%a6%e6%99%82%e5%9c%a8%e7%b7%9a%e7%94%a8%e6%88%b6%e7%b5%b1%e8%a8%88%e5%88%86%e6%9e%90%ef%bc%88redis-%e7%b5%b1%e8%a8%88%e5%9c%a8%e7%b7%9a%ef%bc%89-duJmLBFpVW\">\u7528\u6236\u57fa\u65bcRedis\u7684\u5be6\u6642\u5728\u7dda\u7528\u6236\u7d71\u8a08\u5206\u6790\uff08redis \u7d71\u8a08\u5728\u7dda\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u5b57\u6642\u4ee3\uff0c\u5be6\u6642\u6578\u64da\u5206\u6790\u5df2\u6210\u70ba\u4f01\u696d\u6210\u529f\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002\u7279\u5225\u662f\u5728\u7528\u6236\u884c\u70ba\u5206\u6790\u65b9\u9762\uff0c\u80fd\u5920\u5373\u6642\u7372\u53d6\u5728\u7dda\u7528\u6236\u7684\u7d71\u8a08\u6578\u64da\uff0c\u5c0d\u65bc\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u548c\u512a\u5316\u670d\u52d9\u81f3\u95dc\u91cd\u8981\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u56e0\u5176\u5353\u8d8a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\uff0c\u6210\u70ba\u4e86\u5be6\u73fe\u5728\u7dda\u7528\u6236\u7d71\u8a08\u5206\u6790\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-duJmLBFpVW\">Redis\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\uff08Remote Dictionary Server\uff09\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u7b49\u3002\u7531\u65bc\u5176\u5728\u5167\u5b58\u4e2d\u64cd\u4f5c\u6578\u64da\uff0cRedis\u80fd\u5920\u63d0\u4f9b\u6975\u5feb\u7684\u8b80\u5beb\u901f\u5ea6\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u9700\u8981\u9ad8\u983b\u6b21\u8b80\u53d6\u548c\u5beb\u5165\u7684\u5834\u666f\uff0c\u4f8b\u5982\u5728\u7dda\u7528\u6236\u7d71\u8a08\u3002<\/p>\n<h2 id=\"%e5%9c%a8%e7%b7%9a%e7%94%a8%e6%88%b6%e7%b5%b1%e8%a8%88%e7%9a%84%e9%9c%80%e6%b1%82-duJmLBFpVW\">\u5728\u7dda\u7528\u6236\u7d71\u8a08\u7684\u9700\u6c42<\/h2>\n<p>\u5728\u7dda\u7528\u6236\u7d71\u8a08\u7684\u9700\u6c42\u4e3b\u8981\u4f86\u81ea\u65bc\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u5373\u6642\u6027\uff1a<\/strong>\u4f01\u696d\u9700\u8981\u5373\u6642\u4e86\u89e3\u7576\u524d\u5728\u7dda\u7528\u6236\u7684\u6578\u91cf\uff0c\u4ee5\u4fbf\u53ca\u6642\u8abf\u6574\u670d\u52d9\u5668\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u7528\u6236\u884c\u70ba\u5206\u6790\uff1a<\/strong>\u901a\u904e\u5206\u6790\u5728\u7dda\u7528\u6236\u7684\u884c\u70ba\uff0c\u4f01\u696d\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u7528\u6236\u9700\u6c42\uff0c\u5f9e\u800c\u512a\u5316\u7522\u54c1\u548c\u670d\u52d9\u3002<\/li>\n<li><strong>\u6027\u80fd\u76e3\u63a7\uff1a<\/strong>\u5be6\u6642\u76e3\u63a7\u5728\u7dda\u7528\u6236\u6578\u91cf\u53ef\u4ee5\u5e6b\u52a9\u4f01\u696d\u53ca\u6642\u767c\u73fe\u6f5b\u5728\u7684\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e9%80%b2%e8%a1%8c%e5%9c%a8%e7%b7%9a%e7%94%a8%e6%88%b6%e7%b5%b1%e8%a8%88%e7%9a%84%e5%af%a6%e7%8f%be-duJmLBFpVW\">\u4f7f\u7528Redis\u9032\u884c\u5728\u7dda\u7528\u6236\u7d71\u8a08\u7684\u5be6\u73fe<\/h2>\n<p>\u4f7f\u7528Redis\u9032\u884c\u5728\u7dda\u7528\u6236\u7d71\u8a08\u7684\u57fa\u672c\u601d\u8def\u662f\u5229\u7528Redis\u7684\u6578\u64da\u7d50\u69cb\u4f86\u5b58\u5132\u548c\u66f4\u65b0\u7528\u6236\u7684\u5728\u7dda\u72c0\u614b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>import redis\nimport time\n\n# \u9023\u63a5\u5230Redis\u670d\u52d9\u5668\nr = redis.StrictRedis(host='localhost', port=6379, db=0)\n\n# \u7528\u6236\u767b\u9304\u6642\u8abf\u7528\ndef user_login(user_id):\n    r.sadd('online_users', user_id)  # \u5c07\u7528\u6236ID\u6dfb\u52a0\u5230\u96c6\u5408\u4e2d\n\n# \u7528\u6236\u767b\u51fa\u6642\u8abf\u7528\ndef user_logout(user_id):\n    r.srem('online_users', user_id)  # \u5c07\u7528\u6236ID\u5f9e\u96c6\u5408\u4e2d\u79fb\u9664\n\n# \u7372\u53d6\u7576\u524d\u5728\u7dda\u7528\u6236\u6578\u91cf\ndef get_online_user_count():\n    return r.scard('online_users')  # \u8fd4\u56de\u96c6\u5408\u7684\u5927\u5c0f\n\n# \u6a21\u64ec\u7528\u6236\u767b\u9304\u548c\u767b\u51fa\nuser_login('user1')\nuser_login('user2')\nprint(\"\u7576\u524d\u5728\u7dda\u7528\u6236\u6578\u91cf:\", get_online_user_count())  # \u8f38\u51fa: 2\nuser_logout('user1')\nprint(\"\u7576\u524d\u5728\u7dda\u7528\u6236\u6578\u91cf:\", get_online_user_count())  # \u8f38\u51fa: 1\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528Redis\u7684\u96c6\u5408\uff08set\uff09\u4f86\u5b58\u5132\u5728\u7dda\u7528\u6236\u7684ID\u3002\u7576\u7528\u6236\u767b\u9304\u6642\uff0c\u6211\u5011\u5c07\u5176ID\u6dfb\u52a0\u5230\u96c6\u5408\u4e2d\uff1b\u7576\u7528\u6236\u767b\u51fa\u6642\uff0c\u6211\u5011\u5c07\u5176ID\u5f9e\u96c6\u5408\u4e2d\u79fb\u9664\u3002\u901a\u904e\u8abf\u7528 <code>scard<\/code> \u65b9\u6cd5\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u7576\u524d\u5728\u7dda\u7528\u6236\u7684\u6578\u91cf\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%84%aa%e5%8b%a2-duJmLBFpVW\">Redis\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528Redis\u9032\u884c\u5728\u7dda\u7528\u6236\u7d71\u8a08\u5206\u6790\u6709\u4ee5\u4e0b\u5e7e\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6027\u80fd\uff1a<\/strong>Redis\u7684\u5167\u5b58\u64cd\u4f5c\u4f7f\u5f97\u6578\u64da\u8b80\u53d6\u548c\u5beb\u5165\u901f\u5ea6\u6975\u5feb\uff0c\u80fd\u5920\u652f\u6301\u9ad8\u4e26\u767c\u7684\u8acb\u6c42\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>Redis\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u80fd\u5920\u6839\u64da\u4e0d\u540c\u9700\u6c42\u9748\u6d3b\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u7d50\u69cb\u4f86\u5b58\u5132\u6578\u64da\u3002<\/li>\n<li><strong>\u6301\u4e45\u5316\u9078\u9805\uff1a<\/strong>Redis\u63d0\u4f9b\u591a\u7a2e\u6301\u4e45\u5316\u6a5f\u5236\uff0c\u80fd\u5920\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c\u6062\u5fa9\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-duJmLBFpVW\">\u7d50\u8ad6<\/h2>\n<p>\u57fa\u65bcRedis\u7684\u5be6\u6642\u5728\u7dda\u7528\u6236\u7d71\u8a08\u5206\u6790\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u4f01\u696d\u5373\u6642\u4e86\u89e3\u7528\u6236\u72c0\u614b\uff0c\u9084\u80fd\u70ba\u5f8c\u7e8c\u7684\u6578\u64da\u5206\u6790\u548c\u6c7a\u7b56\u63d0\u4f9b\u6709\u529b\u652f\u6301\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u4f01\u696d\u5c07Redis\u4f5c\u70ba\u5176\u6578\u64da\u8655\u7406\u7684\u6838\u5fc3\u7d44\u4ef6\uff0c\u5f9e\u800c\u63d0\u5347\u696d\u52d9\u904b\u71df\u6548\u7387\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">VPS<\/a> \u53ca\u5176\u5728\u6578\u64da\u8655\u7406\u4e2d\u7684\u61c9\u7528\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u65bcRedis\u7684\u5be6\u6642\u5728\u7dda\u7528\u6236\u7d71\u8a08\u5206\u6790\uff0c\u63d0\u4f9b\u9ad8\u6548\u6e96\u78ba\u7684\u7528\u6236\u6578\u64da\u76e3\u63a7\uff0c\u52a9\u529b\u696d\u52d9\u6c7a\u7b56\u8207\u512a\u5316\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-194969","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194969","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=194969"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194969\/revisions"}],"predecessor-version":[{"id":194970,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194969\/revisions\/194970"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194969"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194969"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}