{"id":15977,"date":"2021-12-27T11:08:04","date_gmt":"2021-12-27T02:08:04","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=15977"},"modified":"2023-05-27T21:37:41","modified_gmt":"2023-05-27T12:37:41","slug":"%e3%80%90node-js%e3%80%91%e3%80%8ccluster%e3%80%8d%e3%83%a2%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%ab%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=15977","title":{"rendered":"\u3010Node.js\u3011\u300ccluster\u300d\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u3064\u3044\u3066"},"content":{"rendered":"<p>Node.js\u306f\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3067\u306f\u306a\u304f\u3001\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u3067\u51e6\u7406\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30fc\u30d0\u30fc\u306eCPU\u306e\u30b3\u30a2\u6570\u304c\u591a\u3051\u308c\u3070\u306e\u8a71\u3067\u3059\u304c\u3001Node0,8\u304b\u3089\u5c0e\u5165\u3055\u308c\u305f<span style=\"color: #ff0000;\"><strong>cluster\u30e2\u30b8\u30e5\u30fc\u30eb<\/strong><\/span>\u3092\u4f7f\u3046\u3053\u3068\u3067\u5225\u3005\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u5272\u308a\u632f\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u4e26\u5217\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h2>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/h2>\n<ul>\n<li>Web\u30b5\u30fc\u30d0\u30fc\u306ehttp\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u632f\u308a\u5206\u3051<\/li>\n<li>socket.io\u3067websocket\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u632f\u308a\u5206\u3051<\/li>\n<\/ul>\n<h2>\u4ed5\u7d44\u307f<\/h2>\n<p>\u57fa\u672c\u7684\u306b\u30011\u3064\u306e\u30dd\u30fc\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3055\u305b\u308c\u308b\u306e\u306f\u4e00\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u307e\u3067\u306a\u306e\u3067\u8907\u6570\u30d7\u30ed\u30bb\u30b9\u306b\u5206\u3051\u3066\u3057\u307e\u3046\u3068\u666e\u901a\u306f\u30c0\u30e1\u3067\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001cluster\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u30de\u30b9\u30bf\u30fc\u30d7\u30ed\u30bb\u30b9\u3092\u8907\u6570\u306e\u5b50\u30d7\u30ed\u30bb\u30b9\u306bfork\u3057\u3066\u30d7\u30ed\u30bb\u30b9\u9593\u901a\u4fe1\uff08IPC\uff09\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>cluster\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u306f\u3001\u5b50\u30d7\u30ed\u30bb\u30b9\u306e\u3053\u3068\u3092<span style=\"color: #ff0000;\"><strong>\u30ef\u30fc\u30ab\u30fc<\/strong><\/span>\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30e1\u30ea\u30c3\u30c8<\/h2>\n<p>\u5927\u91cf\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u6765\u305f\u5834\u5408\u306b\u3001\u4e26\u5217\u51e6\u7406\u3057\u306a\u3044\u5834\u5408\u306b\u6bd4\u3079\u3066\u5927\u5e45\u306b\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u3082\u5e73\u5747\u5fdc\u7b54\u6642\u9593\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002\u3067\u304d\u308b\u306e\u3067\u3042\u308c\u3070\u3084\u3063\u305f\u65b9\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<h2>\u5b9f\u88c5\u4f8b<\/h2>\n<p>Web\u30b5\u30fc\u30d0(Express)\u3092\u30af\u30e9\u30b9\u30bf\u30fc\u5316\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u3002<\/p>\n<pre class=\"lang:default decode:true\">var cluster = require(\"cluster\");\r\nvar express = require(\"express\");\r\nvar numCPUs = require(\"os\").cpus().length;\r\n\r\nconsole.log(\"cluster.isMaster\", cluster.isMaster);\r\n\r\nif (cluster.isMaster) {\r\n  for (var i = 0; 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