{"id":128847,"date":"2024-10-26T17:12:20","date_gmt":"2024-10-26T09:12:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/128847\/"},"modified":"2024-10-26T17:12:21","modified_gmt":"2024-10-26T09:12:21","slug":"redis%e5%af%a6%e7%8f%be%e7%be%a4%e8%81%8a%e4%ba%ba%e6%95%b8%e6%8e%a7%e5%88%b6%ef%bc%88redis%e7%be%a4%e8%81%8a%e4%ba%ba%e6%95%b8%e6%8e%a7%e5%88%b6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/128847\/","title":{"rendered":"Redis\u5be6\u73fe\u7fa4\u804a\u4eba\u6578\u63a7\u5236\uff08redis\u7fa4\u804a\u4eba\u6578\u63a7\u5236\uff09"},"content":{"rendered":"<h1 id=\"redis%e5%af%a6%e7%8f%be%e7%be%a4%e8%81%8a%e4%ba%ba%e6%95%b8%e6%8e%a7%e5%88%b6%ef%bc%88redis%e7%be%a4%e8%81%8a%e4%ba%ba%e6%95%b8%e6%8e%a7%e5%88%b6%ef%bc%89-xhGJKpnlNS\">Redis\u5be6\u73fe\u7fa4\u804a\u4eba\u6578\u63a7\u5236\uff08redis\u7fa4\u804a\u4eba\u6578\u63a7\u5236\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u7fa4\u804a\u529f\u80fd\u5df2\u6210\u70ba\u8a31\u591a\u61c9\u7528\u7a0b\u5e8f\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u7121\u8ad6\u662f\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\u3001\u904a\u6232\u9084\u662f\u4f01\u696d\u5167\u90e8\u6e9d\u901a\u5de5\u5177\uff0c\u7fa4\u804a\u90fd\u80fd\u4fc3\u9032\u7528\u6236\u4e4b\u9593\u7684\u4e92\u52d5\u3002\u7136\u800c\uff0c\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u5982\u4f55\u6709\u6548\u5730\u63a7\u5236\u7fa4\u804a\u4e2d\u7684\u4eba\u6578\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u6280\u8853\u6311\u6230\u3002Redis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4f86\u5be6\u73fe\u7fa4\u804a\u4eba\u6578\u63a7\u5236\u3002<\/p>\n<h2 id=\"redis%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-xhGJKpnlNS\">Redis\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis\u662f\u4e00\u7a2e\u958b\u6e90\u7684\u5167\u5b58\u6578\u64da\u7d50\u69cb\u5b58\u5132\u7cfb\u7d71\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5982\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\u3002\u7531\u65bc\u5176\u9ad8\u6548\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u6578\u64da\u7d50\u69cb\uff0cRedis\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u5305\u62ec\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u5be6\u6642\u6578\u64da\u5206\u6790\u7b49\u3002<\/p>\n<h2 id=\"%e7%be%a4%e8%81%8a%e4%ba%ba%e6%95%b8%e6%8e%a7%e5%88%b6%e7%9a%84%e9%9c%80%e6%b1%82-xhGJKpnlNS\">\u7fa4\u804a\u4eba\u6578\u63a7\u5236\u7684\u9700\u6c42<\/h2>\n<p>\u5728\u7fa4\u804a\u4e2d\uff0c\u63a7\u5236\u4eba\u6578\u7684\u9700\u6c42\u4e3b\u8981\u4f86\u81ea\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u7576\u7fa4\u804a\u4eba\u6578\u904e\u591a\u6642\uff0c\u7cfb\u7d71\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u5c0e\u81f4\u5ef6\u9072\u548c\u4e0d\u7a69\u5b9a\u3002<\/li>\n<li><strong>\u7528\u6236\u9ad4\u9a57\uff1a<\/strong>\u904e\u591a\u7684\u53c3\u8207\u8005\u53ef\u80fd\u6703\u4f7f\u804a\u5929\u5167\u5bb9\u8b8a\u5f97\u6df7\u4e82\uff0c\u5f71\u97ff\u7528\u6236\u7684\u4ea4\u6d41\u9ad4\u9a57\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027\uff1a<\/strong>\u63a7\u5236\u4eba\u6578\u53ef\u4ee5\u9632\u6b62\u60e1\u610f\u7528\u6236\u7684\u9032\u5165\uff0c\u4fdd\u8b77\u7fa4\u804a\u7684\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e4%ba%ba%e6%95%b8%e6%8e%a7%e5%88%b6-xhGJKpnlNS\">\u4f7f\u7528Redis\u5be6\u73fe\u4eba\u6578\u63a7\u5236<\/h2>\n<p>\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u7fa4\u804a\u4eba\u6578\u63a7\u5236\u7684\u57fa\u672c\u601d\u8def\u662f\u5229\u7528Redis\u7684\u6578\u64da\u7d50\u69cb\u4f86\u5b58\u5132\u548c\u7ba1\u7406\u7fa4\u804a\u7684\u53c3\u8207\u8005\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u5be6\u73fe\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e5%ae%9a%e6%9c%80%e5%a4%a7%e4%ba%ba%e6%95%b8%e9%99%90%e5%88%b6-xhGJKpnlNS\">1. \u8a2d\u5b9a\u6700\u5927\u4eba\u6578\u9650\u5236<\/h3>\n<p>\u9996\u5148\uff0c\u9700\u8981\u8a2d\u5b9a\u4e00\u500b\u6700\u5927\u4eba\u6578\u9650\u5236\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>MAX_USERS = 100<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8redis%e7%9a%84%e9%9b%86%e5%90%88%e4%be%86%e7%ae%a1%e7%90%86%e5%8f%83%e8%88%87%e8%80%85-xhGJKpnlNS\">2. \u4f7f\u7528Redis\u7684\u96c6\u5408\u4f86\u7ba1\u7406\u53c3\u8207\u8005<\/h3>\n<p>\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u96c6\u5408\uff08Set\uff09\u4f86\u5b58\u5132\u7576\u524d\u7fa4\u804a\u7684\u53c3\u8207\u8005\u3002\u96c6\u5408\u7684\u7279\u6027\u4f7f\u5f97\u5b83\u80fd\u5920\u81ea\u52d5\u8655\u7406\u91cd\u8907\u7684\u53c3\u8207\u8005\u3002<\/p>\n<pre><code>redis.sadd(\"chat_room:users\", user_id)<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e4%ba%ba%e6%95%b8%e9%99%90%e5%88%b6-xhGJKpnlNS\">3. \u6aa2\u67e5\u4eba\u6578\u9650\u5236<\/h3>\n<p>\u5728\u6bcf\u6b21\u6709\u65b0\u7528\u6236\u52a0\u5165\u6642\uff0c\u9700\u8981\u6aa2\u67e5\u7576\u524d\u7684\u53c3\u8207\u8005\u4eba\u6578\u662f\u5426\u5df2\u9054\u5230\u4e0a\u9650\uff1a<\/p>\n<pre><code>\nif redis.scard(\"chat_room:users\") &lt; MAX_USERS:\n    redis.sadd(\"chat_room:users\", user_id)\nelse:\n    return \"\u7fa4\u804a\u5df2\u6eff\uff0c\u7121\u6cd5\u52a0\u5165\"\n<\/code><\/pre>\n<h3 id=\"4-%e7%94%a8%e6%88%b6%e9%80%80%e5%87%ba%e6%99%82%e6%9b%b4%e6%96%b0%e5%8f%83%e8%88%87%e8%80%85%e5%88%97%e8%a1%a8-xhGJKpnlNS\">4. \u7528\u6236\u9000\u51fa\u6642\u66f4\u65b0\u53c3\u8207\u8005\u5217\u8868<\/h3>\n<p>\u7576\u7528\u6236\u9000\u51fa\u7fa4\u804a\u6642\uff0c\u9700\u8981\u5f9e\u96c6\u5408\u4e2d\u79fb\u9664\u8a72\u7528\u6236\uff1a<\/p>\n<pre><code>redis.srem(\"chat_room:users\", user_id)<\/code><\/pre>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-xhGJKpnlNS\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Redis\u4f86\u63a7\u5236\u7fa4\u804a\u4eba\u6578\uff1a<\/p>\n<pre><code>\nimport redis\n\n# \u9023\u63a5\u5230Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\nMAX_USERS = 100\n\ndef join_chat(user_id):\n    if r.scard(\"chat_room:users\") &lt; MAX_USERS:\n        r.sadd(\"chat_room:users\", user_id)\n        return \"\u6210\u529f\u52a0\u5165\u7fa4\u804a\"\n    else:\n        return \"\u7fa4\u804a\u5df2\u6eff\uff0c\u7121\u6cd5\u52a0\u5165\"\n\ndef leave_chat(user_id):\n    r.srem(\"chat_room:users\", user_id)\n    return \"\u6210\u529f\u9000\u51fa\u7fa4\u804a\"\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-xhGJKpnlNS\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u7fa4\u804a\u4eba\u6578\u63a7\u5236\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5229\u7528Redis\u7684\u96c6\u5408\u6578\u64da\u7d50\u69cb\uff0c\u53ef\u4ee5\u8f15\u9b06\u5730\u7ba1\u7406\u7fa4\u804a\u7684\u53c3\u8207\u8005\uff0c\u4e26\u78ba\u4fdd\u7cfb\u7d71\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0cRedis\u7684\u61c9\u7528\u5834\u666f\u5c07\u6703\u66f4\u52a0\u5ee3\u6cdb\uff0c\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u66f4\u591a\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u7fa4\u804a\u4eba\u6578\u63a7\u5236\uff0c\u78ba\u4fdd\u804a\u5929\u74b0\u5883\u7684\u7a69\u5b9a\u6027\u8207\u6d41\u66a2\u6027\uff0c\u63d0\u5347\u7528\u6236\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-128847","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128847","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=128847"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128847\/revisions"}],"predecessor-version":[{"id":128848,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/128847\/revisions\/128848"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=128847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=128847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=128847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}