\u4eca\u65e5\u306f\u3001Node JS\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30e2\u30c7\u30eb\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u4ee5\u524d\u306e\u6295\u7a3f\u3067\u3001Node JS\u306e\u57fa\u672c\u3001Node JS\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3001Node JS\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u307e\u3057\u305f\u3002<\/p>\n
Node JS\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u4f8b\u3092\u59cb\u3081\u308b\u524d\u306b\u3001Node JS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3064\u3044\u3066\u306e\u57fa\u672c\u7684\u306a\u77e5\u8b58\u3092\u6301\u3064\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u6295\u7a3f\u3067\u306f\u3001\u300cNode JS\u306e\u5185\u90e8\u52d5\u4f5c\u3001\u3069\u306e\u3088\u3046\u306a\u51e6\u7406\u30e2\u30c7\u30eb\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u304b\u3001Node JS\u304c\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u30e2\u30c7\u30eb\u3067\u4e26\u884c\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059\u308b\u304b\u300d\u306a\u3069\u306b\u3064\u3044\u3066\u8a71\u3057\u5408\u3044\u307e\u3059\u3002<\/p>\n
\u79c1\u305f\u3061\u304c\u3059\u3067\u306b\u8a71\u3057\u5408\u3063\u305f\u3088\u3046\u306b\u3001Node JS\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u300c\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30e2\u30c7\u30eb\u300d\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u4f7f\u7528\u3057\u3066\u3001\u8907\u6570\u306e\u540c\u6642\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u51e6\u7406\u3057\u307e\u3059\u3002JSP\u3001Spring MVC\u3001ASP.NET\u3001HTML\u3001Ajax\u3001jQuery\u306a\u3069\u3001\u591a\u304f\u306e\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u6280\u8853\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u6280\u8853\u306f\u3059\u3079\u3066\u3001\u300c\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u306e\u30ea\u30af\u30a8\u30b9\u30c8-\u30ec\u30b9\u30dd\u30f3\u30b9\u300d\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u540c\u6642\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u79c1\u305f\u3061\u306f\u65e2\u306b\u300c\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u306e\u30ea\u30af\u30a8\u30b9\u30c8-\u30ec\u30b9\u30dd\u30f3\u30b9\u300d\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u3063\u3066\u3044\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u307b\u3068\u3093\u3069\u306e\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002\u3057\u304b\u3057\u3001Node JS\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u306a\u305c\u7570\u306a\u308b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u9078\u629e\u3057\u305f\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3068\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u4e3b\u306a\u9055\u3044\u306f\u4f55\u3067\u3057\u3087\u3046\u304b\u3002\u3069\u306e\u30a6\u30a7\u30d6\u958b\u767a\u8005\u3082Node JS\u3092\u5b66\u3073\u3001\u7c21\u5358\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001Node JS\u306e\u5185\u90e8\u69cb\u9020\u3092\u7406\u89e3\u3057\u306a\u3044\u3068\u3001Node JS\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u8a08\u3068\u958b\u767a\u304c\u3046\u307e\u304f\u884c\u3048\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001Node JS\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u3092\u958b\u59cb\u3059\u308b\u524d\u306b\u3001\u307e\u305aNode JS\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u5185\u90e8\u69cb\u9020\u3092\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n
Node.js\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u3001\u8907\u6570\u306e\u540c\u6642\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u300c\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u300d\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u3001\u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u4f7f\u7528\u305b\u305a\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u4e26\u884c\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u306f\u5b9f\u969b\u306b\u306f\u3069\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30e2\u30c7\u30eb\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\u3053\u308c\u3089\u306e\u6982\u5ff5\u306b\u3064\u3044\u3066\u9806\u756a\u306b\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u307e\u305a\u3001\u300c\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u300d\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3064\u3044\u3066\u8aac\u660e\u3059\u308b\u524d\u306b\u3001\u6709\u540d\u306a\u300c\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u306e\u30ea\u30af\u30a8\u30b9\u30c8-\u30ec\u30b9\u30dd\u30f3\u30b9\u300d\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
\u4e00\u822c\u306b\u3001Node.js\u3092\u4f7f\u7528\u305b\u305a\u306b\u958b\u767a\u3055\u308c\u305f\u4efb\u610f\u306e\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u300c\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u578b\u306e\u30ea\u30af\u30a8\u30b9\u30c8-\u30ec\u30b9\u30dd\u30f3\u30b9\u300d\u30e2\u30c7\u30eb\u306b\u5f93\u3044\u307e\u3059\u3002\u5358\u7d14\u306b\u8a00\u3048\u3070\u3001\u3053\u306e\u30e2\u30c7\u30eb\u306f\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u30e2\u30c7\u30eb\u3068\u547c\u3076\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u57fa\u3065\u3044\u3066\u51e6\u7406\u3092\u884c\u3044\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u6e96\u5099\u3057\u3066\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306fHTTP\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002HTTP\u306f\u72b6\u614b\u3092\u6301\u305f\u306a\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308b\u305f\u3081\u3001\u3053\u306e\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u30e2\u30c7\u30eb\u3082\u72b6\u614b\u3092\u6301\u305f\u306a\u3044\u30e2\u30c7\u30eb\u3068\u547c\u3076\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3092\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u72b6\u614b\u306a\u3057\u30e2\u30c7\u30eb\u3068\u547c\u3076\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306f\u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u540c\u6642\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u306e\u5185\u90e8\u306b\u3064\u3044\u3066\u8aac\u660e\u3059\u308b\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u56f3\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u30e2\u30c7\u30eb\u306e\u51e6\u7406\u624b\u9806\uff1a<\/p>\n
\u30b5\u30fc\u30d0\u30fc\u306f\u7121\u9650\u30eb\u30fc\u30d7\u3067\u5f85\u6a5f\u3057\u3001\u4e0a\u8a18\u3067\u8ff0\u3079\u305f\u3059\u3079\u3066\u306e\u30b5\u30d6\u30b9\u30c6\u30c3\u30d7\u3092n\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3059\u3079\u3066\u306b\u5bfe\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3054\u3068\u306b1\u3064\u306e\u30b9\u30ec\u30c3\u30c9\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002\u8907\u6570\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0IO\u64cd\u4f5c\u3092\u5fc5\u8981\u3068\u3059\u308b\u5834\u5408\u3001\u307b\u3068\u3093\u3069\u306e\u30b9\u30ec\u30c3\u30c9\u304c\u81ea\u5206\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u6e96\u5099\u306b\u5fd9\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u6b8b\u308a\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3088\u308a\u9577\u3044\u6642\u9593\u3092\u5f85\u305f\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u56f3\u306e\u8aac\u660e\uff1a<\/p>\n
Thread T-1 reads Client-1 Request-1 and process it
\nClient-1 Request-1 does not require any Blocking IO Operations
\nThread T-1 does necessary steps and prepares Response-1 and send it back to the Server
\nWeb Server in-turn send this Response-1 to the Client-1<\/p>\n
Web Server pickup another Client-2 Request-2, Pickup one Thread T-2 from Thread pool and assign this request to Thread T-2<\/p>\n
Thread T-2 reads Client-1 Request-2 and process it
\nClient-1 Request-2 does not require any Blocking IO Operations
\nThread T-2 does necessary steps and prepares Response-2 and send it back to the Server
\nWeb Server in-turn send this Response-2 to the Client-2<\/p>\n
Web Server pickup another Client-n Request-n, Pickup one Thread T-n from Thread pool and assign this request to Thread T-n<\/p>\n
Thread T-n reads Client-n Request-n and process it
\nClient-n Request-n require heavy Blocking IO and computation Operations
\nThread T-n takes more time to interact with external systems, does necessary steps and prepares Response-n and send it back to the Server
\nWeb Server in-turn send this Response-n to the Client-nIf \u201cn\u201d is greater than \u201cm\u201d (Most of the times, its true), then server assigns Threads to Client Requests up to available Threads. After all m Threads are utilized, then remaining Client\u2019s Request should wait in the Queue until some of the busy Threads finish their Request-Processing Job and free to pick up next Request. If those threads are busy with Blocking IO Tasks (For example, interacting with Database, file system, JMS Queue, external services etc.) for longer time, then remaining clients should wait longer time.<\/li>\n
\u8981\u6c42\/\u5fdc\u7b54\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u30e2\u30c7\u30eb\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\uff1a<\/p>\n
Node.js\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u3001\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3067\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u306a\u30e2\u30c7\u30eb\u306b\u5f93\u3044\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u3067\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30e2\u30c7\u30eb\u306b\u5f93\u3044\u307e\u3059\u3002Node.js\u306e\u51e6\u7406\u30e2\u30c7\u30eb\u306f\u3001\u4e3b\u306bJavaScript\u306e\u30a4\u30d9\u30f3\u30c8\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u3068JavaScript\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u57fa\u306b\u3057\u3066\u3044\u307e\u3059\u3002JavaScript\u306e\u30a4\u30d9\u30f3\u30c8\u3068\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u306e\u5341\u5206\u306a\u77e5\u8b58\u3092\u6301\u3063\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u77e5\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u307e\u305a\u3053\u308c\u3089\u306e\u6295\u7a3f\u3084\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u8aad\u3093\u3067\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u9032\u3080\u524d\u306b\u30a2\u30a4\u30c7\u30a2\u3092\u5f97\u3066\u304f\u3060\u3055\u3044\u3002Node.js\u306f\u3053\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u5f93\u3046\u305f\u3081\u3001\u975e\u5e38\u306b\u7c21\u5358\u306b\u3088\u308a\u591a\u304f\u306e\u540c\u6642\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u306e\u5185\u90e8\u306b\u3064\u3044\u3066\u8aac\u660e\u3059\u308b\u524d\u306b\u3001\u307e\u305a\u4e0b\u306e\u56f3\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u56f3\u3067\u306f\u3001Node.js\u306e\u5185\u90e8\u306e\u5404\u30dd\u30a4\u30f3\u30c8\u3092\u8aac\u660e\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3057\u307e\u3057\u305f\u3002Node.js\u306e\u51e6\u7406\u30e2\u30c7\u30eb\u306e\u4e2d\u5fc3\u306f\u300c\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u300d\u3067\u3059\u3002\u3053\u308c\u3092\u7406\u89e3\u3059\u308c\u3070\u3001Node.js\u306e\u5185\u90e8\u3092\u7406\u89e3\u3059\u308b\u306e\u306f\u975e\u5e38\u306b\u7c21\u5358\u3067\u3059\u3002\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30e2\u30c7\u30eb\u306e\u51e6\u7406\u624b\u9806\uff1a<\/p>\n
Checks Threads availability from Internal Thread Pool
\nPicks up one Thread and assign this Client Request to that thread.
\nThat Thread is responsible for taking that request, process it, perform Blocking IO operations, prepare response and send it back to the Event Loop
\nEvent Loop in turn, sends that Response to the respective Client.<\/li>\n<\/ul>\n
\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u306e\u8aac\u660e\uff1a<\/p>\n
Checks whether Client-1 Request-1 does require any Blocking IO Operations or takes more time for complex computation tasks.
\nAs this request is simple computation and Non-Blocking IO task, it does not require separate Thread to process it.
\nEvent Loop process all steps provided in that Client-1 Request-1 Operation (Here Operations means Java Script\u2019s functions) and prepares Response-1
\nEvent Loop sends Response-1 to Client-1<\/p>\n
Even Loop pickups Client-2 Request-2<\/p>\n
Checks whether Client-2 Request-2does require any Blocking IO Operations or takes more time for complex computation tasks.
\nAs this request is simple computation and Non-Blocking IO task, it does not require separate Thread to process it.
\nEvent Loop process all steps provided in that Client-2 Request-2 Operation and prepares Response-2
\nEvent Loop sends Response-2 to Client-2<\/p>\n
Even Loop pickups Client-n Request-n<\/p>\n
Checks whether Client-n Request-n does require any Blocking IO Operations or takes more time for complex computation tasks.
\nAs this request is very complex computation or Blocking IO task, Even Loop does not process this request.
\nEvent Loop picks up Thread T-1 from Internal Thread pool and assigns this Client-n Request-n to Thread T-1
\nThread T-1 reads and process Request-n, perform necessary Blocking IO or Computation task, and finally prepares Response-n
\nThread T-1 sends this Response-n to Event Loop
\nEvent Loop in turn, sends this Response-n to Client-n<\/li>\n<\/ul>\n
\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u30011\u3064\u307e\u305f\u306f\u8907\u6570\u306eJavaScript\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u3067\u3059\u3002JavaScript\u95a2\u6570\u306f\u4ed6\u306e\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3082\u3042\u308a\u3001\u307e\u305f\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306e\u7279\u6027\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u5404\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f62\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\uff1a<\/p>\n
function1(function2,callback1);\r\nfunction2(function3,callback2);\r\nfunction3(input-params);\r\n<\/code><\/pre>\n\u65e5\u672c\u306e\u53cb\u9054\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3002<\/p>\n
\n- If you don\u2019t understand how these functions are executed, then I feel you are not familiar with Java Script Functions and Callback mechanism.<\/li>\n
- We should have some idea about Java Script functions and Callback mechanisms. Please go through some online tutorial before starting our Node JS Application development.<\/li>\n<\/ul>\n
Node.js \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3 – \u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306e\u5229\u70b9<\/h3>\n\n- \n
\u3088\u308a\u591a\u304f\u306e\u540c\u6642\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u8981\u6c42\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u306f\u975e\u5e38\u306b\u7c21\u5358\u3067\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u79c1\u305f\u3061\u306eNode JS\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u307e\u3059\u307e\u3059\u591a\u304f\u306e\u540c\u6642\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u8981\u6c42\u3092\u53d7\u3051\u53d6\u3063\u3066\u3082\u3001\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306e\u304a\u304b\u3052\u3067\u3055\u3089\u306b\u591a\u304f\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
Node JS\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u30b9\u30ec\u30c3\u30c9\u3092\u5c11\u306a\u304f\u4f7f\u7528\u3059\u308b\u305f\u3081\u3001\u30ea\u30bd\u30fc\u30b9\u3084\u30e1\u30e2\u30ea\u3082\u5c11\u306a\u304f\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/ol>\n\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306e\u7591\u4f3c\u30b3\u30fc\u30c9<\/h3>\n
\u300c\u79c1\u306fJava\u306e\u958b\u767a\u8005\u3067\u3059\u306e\u3067\u3001\u300c\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306e\u52d5\u4f5c\u65b9\u6cd5\u300d\u3092Java\u306e\u5c02\u9580\u7528\u8a9e\u3067\u8aac\u660e\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u7d14\u7c8b\u306aJava\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u7686\u3055\u3093\u306a\u3089\u7406\u89e3\u3067\u304d\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u3082\u3057\u7406\u89e3\u306b\u554f\u984c\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30b3\u30e1\u30f3\u30c8\u3092\u6b8b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u300d<\/p>\n
public class EventLoop {\r\nwhile(true){\r\n \tif(Event Queue receives a JavaScript Function Call){\r\n \t\tClientRequest request = EventQueue.getClientRequest();\r\n If(request requires BlokingIO or takes more computation time)\r\n Assign request to Thread T1\r\n Else\r\n Process and Prepare response\r\n }\r\n }\r\n} \r\n<\/code><\/pre>\n\u305d\u308c\u304cNode JS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068Node JS\u306e\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306e\u3059\u3079\u3066\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u65e5\u306f\u3001Node JS\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u306e\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u30e2\u30c7\u30eb\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u4ee5\u524d\u306e\u6295\u7a3f\u3067\u3001Node JS\u306e\u57fa\u672c\u3001Node JS\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3001Node JS\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u307e\u3057\u305f\u3002 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[71,26],"class_list":["post-643","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-node-js","tag-26"],"yoast_head":"\n
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