{"id":98158,"date":"2024-10-21T00:16:18","date_gmt":"2024-10-20T16:16:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/98158\/"},"modified":"2024-10-21T00:16:18","modified_gmt":"2024-10-20T16:16:18","slug":"redis-%e6%9f%a5%e8%a9%a2%e5%af%a6%e6%99%82%e7%b5%b1%e8%a8%88%e5%9c%a8%e7%b7%9a%e4%ba%ba%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/98158\/","title":{"rendered":"Redis \u67e5\u8a62\u5be6\u6642\u7d71\u8a08\u5728\u7dda\u4eba\u6578"},"content":{"rendered":"<h1 id=\"redis-%e6%9f%a5%e8%a9%a2%e5%af%a6%e6%99%82%e7%b5%b1%e8%a8%88%e5%9c%a8%e7%b7%9a%e4%ba%ba%e6%95%b8-dIRWRVdeOS\">Redis \u67e5\u8a62\u5be6\u6642\u7d71\u8a08\u5728\u7dda\u4eba\u6578<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u5be6\u6642\u6578\u64da\u8655\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7121\u8ad6\u662f\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\u3001\u5728\u7dda\u904a\u6232\u9084\u662f\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\uff0c\u4e86\u89e3\u5728\u7dda\u7528\u6236\u7684\u6578\u91cf\u5c0d\u65bc\u512a\u5316\u7528\u6236\u9ad4\u9a57\u548c\u8cc7\u6e90\u5206\u914d\u81f3\u95dc\u91cd\u8981\u3002Redis \u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u5167\u5b58\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u7d50\u69cb\u548c\u64cd\u4f5c\uff0c\u7279\u5225\u9069\u5408\u7528\u65bc\u67e5\u8a62\u5be6\u6642\u7d71\u8a08\u5728\u7dda\u4eba\u6578\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-dIRWRVdeOS\">Redis \u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>Redis \u662f\u4e00\u7a2e\u958b\u6e90\u7684\u9375\u503c\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\u3002<\/p>\n<h2 id=\"%e5%9c%a8%e7%b7%9a%e4%ba%ba%e6%95%b8%e7%b5%b1%e8%a8%88%e7%9a%84%e9%9c%80%e6%b1%82-dIRWRVdeOS\">\u5728\u7dda\u4eba\u6578\u7d71\u8a08\u7684\u9700\u6c42<\/h2>\n<p>\u5728\u7dda\u4eba\u6578\u7d71\u8a08\u7684\u9700\u6c42\u4e3b\u8981\u4f86\u81ea\u65bc\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li><strong>\u7528\u6236\u9ad4\u9a57\uff1a<\/strong>\u4e86\u89e3\u7576\u524d\u5728\u7dda\u7528\u6236\u6578\u91cf\u53ef\u4ee5\u5e6b\u52a9\u7db2\u7ad9\u7ba1\u7406\u8005\u8abf\u6574\u8cc7\u6e90\u914d\u7f6e\uff0c\u5f9e\u800c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<li><strong>\u6027\u80fd\u76e3\u63a7\uff1a<\/strong>\u901a\u904e\u5be6\u6642\u76e3\u63a7\u5728\u7dda\u4eba\u6578\uff0c\u53ef\u4ee5\u53ca\u6642\u767c\u73fe\u6d41\u91cf\u7570\u5e38\uff0c\u9032\u884c\u6027\u80fd\u8abf\u6574\u3002<\/li>\n<li><strong>\u5546\u696d\u6c7a\u7b56\uff1a<\/strong>\u5728\u7dda\u4eba\u6578\u7684\u8b8a\u5316\u53ef\u4ee5\u53cd\u6620\u7528\u6236\u7684\u6d3b\u8e8d\u5ea6\uff0c\u5e6b\u52a9\u4f01\u696d\u5236\u5b9a\u66f4\u6709\u6548\u7684\u5e02\u5834\u7b56\u7565\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8-redis-%e5%af%a6%e7%8f%be%e5%9c%a8%e7%b7%9a%e4%ba%ba%e6%95%b8%e7%b5%b1%e8%a8%88-dIRWRVdeOS\">\u4f7f\u7528 Redis \u5be6\u73fe\u5728\u7dda\u4eba\u6578\u7d71\u8a08<\/h2>\n<p>\u4f7f\u7528 Redis \u4f86\u7d71\u8a08\u5728\u7dda\u4eba\u6578\u7684\u57fa\u672c\u601d\u8def\u662f\u5229\u7528 Redis \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\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e7%94%a8%e6%88%b6%e5%9c%a8%e7%b7%9a%e7%8b%80%e6%85%8b-dIRWRVdeOS\">1. \u8a2d\u7f6e\u7528\u6236\u5728\u7dda\u72c0\u614b<\/h3>\n<p>\u7576\u7528\u6236\u767b\u9304\u7cfb\u7d71\u6642\uff0c\u53ef\u4ee5\u5c07\u5176\u7528\u6236 ID \u5b58\u5165 Redis \u7684\u96c6\u5408\u4e2d\uff0c\u8868\u793a\u8a72\u7528\u6236\u5728\u7dda\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>redis&gt; SADD online_users user_id<\/code><\/pre>\n<h3 id=\"2-%e7%a7%bb%e9%99%a4%e7%94%a8%e6%88%b6%e5%9c%a8%e7%b7%9a%e7%8b%80%e6%85%8b-dIRWRVdeOS\">2. \u79fb\u9664\u7528\u6236\u5728\u7dda\u72c0\u614b<\/h3>\n<p>\u7576\u7528\u6236\u767b\u51fa\u6216\u8d85\u6642\u6642\uff0c\u61c9\u8a72\u5c07\u5176\u7528\u6236 ID \u5f9e\u96c6\u5408\u4e2d\u79fb\u9664\uff1a<\/p>\n<pre><code>redis&gt; SREM online_users user_id<\/code><\/pre>\n<h3 id=\"3-%e6%9f%a5%e8%a9%a2%e5%9c%a8%e7%b7%9a%e4%ba%ba%e6%95%b8-dIRWRVdeOS\">3. \u67e5\u8a62\u5728\u7dda\u4eba\u6578<\/h3>\n<p>\u8981\u67e5\u8a62\u7576\u524d\u5728\u7dda\u4eba\u6578\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>redis&gt; SCARD online_users<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u5c07\u8fd4\u56de\u96c6\u5408\u4e2d\u5143\u7d20\u7684\u6578\u91cf\uff0c\u5373\u7576\u524d\u5728\u7dda\u7684\u7528\u6236\u6578\u3002<\/p>\n<h2 id=\"%e5%af%a6%e6%99%82%e6%9b%b4%e6%96%b0%e8%88%87%e7%9b%a3%e6%8e%a7-dIRWRVdeOS\">\u5be6\u6642\u66f4\u65b0\u8207\u76e3\u63a7<\/h2>\n<p>\u70ba\u4e86\u5be6\u73fe\u5be6\u6642\u66f4\u65b0\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 Redis \u7684 Pub\/Sub \u529f\u80fd\u3002\u7576\u7528\u6236\u7684\u5728\u7dda\u72c0\u614b\u767c\u751f\u8b8a\u5316\u6642\uff0c\u53ef\u4ee5\u767c\u9001\u6d88\u606f\u5230\u4e00\u500b\u983b\u9053\uff0c\u4e26\u8b93\u6240\u6709\u8a02\u95b1\u8a72\u983b\u9053\u7684\u5ba2\u6236\u7aef\u63a5\u6536\u66f4\u65b0\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6240\u6709\u7528\u6236\u90fd\u80fd\u5373\u6642\u7372\u5f97\u5728\u7dda\u4eba\u6578\u7684\u8b8a\u5316\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-dIRWRVdeOS\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 Redis \u7684 Pub\/Sub \u529f\u80fd\u4f86\u5be6\u6642\u66f4\u65b0\u5728\u7dda\u4eba\u6578\uff1a<\/p>\n<pre><code>import redis\n\n# \u9023\u63a5\u5230 Redis\nr = redis.Redis(host='localhost', port=6379, db=0)\n\n# \u7528\u6236\u767b\u9304\ndef user_login(user_id):\n    r.sadd('online_users', user_id)\n    r.publish('user_updates', f'User {user_id} logged in')\n\n# \u7528\u6236\u767b\u51fa\ndef user_logout(user_id):\n    r.srem('online_users', user_id)\n    r.publish('user_updates', f'User {user_id} logged out')\n\n# \u8a02\u95b1\u5728\u7dda\u4eba\u6578\u66f4\u65b0\ndef subscribe():\n    pubsub = r.pubsub()\n    pubsub.subscribe('user_updates')\n    for message in pubsub.listen():\n        print(message)\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-dIRWRVdeOS\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528 Redis \u4f86\u67e5\u8a62\u5be6\u6642\u7d71\u8a08\u5728\u7dda\u4eba\u6578\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u7c21\u55ae\u7684\u547d\u4ee4\u548c\u6578\u64da\u7d50\u69cb\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u5728\u7dda\u4eba\u6578\u7684\u7d71\u8a08\u548c\u76e3\u63a7\uff0c\u5f9e\u800c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0cRedis \u7684\u61c9\u7528\u5834\u666f\u5c07\u6703\u66f4\u52a0\u5ee3\u6cdb\uff0c\u6210\u70ba\u5be6\u6642\u6578\u64da\u8655\u7406\u7684\u91cd\u8981\u5de5\u5177\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c\u5176\u4ed6\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528 Redis \u67e5\u8a62\u5be6\u6642\u7d71\u8a08\u5728\u7dda\u4eba\u6578\uff0c\u5feb\u901f\u7372\u53d6\u7528\u6236\u6578\u64da\uff0c\u63d0\u5347\u7db2\u7ad9\u6027\u80fd\u8207\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-98158","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98158","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=98158"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98158\/revisions"}],"predecessor-version":[{"id":98159,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/98158\/revisions\/98159"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=98158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=98158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=98158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}