{"id":12410,"date":"2022-07-10T14:52:17","date_gmt":"2022-07-10T05:52:17","guid":{"rendered":"http:\/\/www.gisdeveloper.co.kr\/?p=12410"},"modified":"2022-07-10T14:57:20","modified_gmt":"2022-07-10T05:57:20","slug":"node-js%ec%97%90%ec%84%9c-%eb%8f%85%eb%a6%bd%ec%a0%81%ec%9d%b8-%ed%94%84%eb%a1%9c%ec%84%b8%ec%8a%a4%eb%a5%bc-%ed%86%b5%ed%95%9c-%ec%97%b0%ec%82%b0-%eb%b0%8f-%ea%b7%b8-%ea%b2%b0%ea%b3%bc-%ec%96%bb","status":"publish","type":"post","link":"http:\/\/www.gisdeveloper.co.kr\/?p=12410","title":{"rendered":"Node.js\uc5d0\uc11c \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\ub97c \ud1b5\ud55c \uc5f0\uc0b0 \ubc0f \uadf8 \uacb0\uacfc \uc5bb\uae30"},"content":{"rendered":"<p>\ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\ub97c \ud1b5\ud574 \uc5bb\ub294 \uc7a5\uc810\uc740 \uc5ec\ub7ec \uac1c\uc758 CPU\ub97c \ud65c\uc6a9\ud558\uc5ec \ubcf4\ub2e4 \ub354 \ube60\ub978 \uacb0\uacfc\ub97c \uc5bb\uc744 \uc218 \uc788\ub2e4\ub294 \uc810\uc778\ub370, \ub2e8\uc810\uc740 CPU \uac04\uc758 \ub370\uc774\ud130 \uacf5\uc720\uac00 \ucc38\uc870(Reference)\uac00 \uc544\ub2cc \ubcf5\uc0ac(Copy)\uc774\ubbc0\ub85c \uba54\ubaa8\ub9ac \uc0ac\uc6a9\ub7c9\uc774 2\ubc30\uac00 \ub41c\ub2e4\ub294 \uc810\uc774\ub2e4. \ud558\uc9c0\ub9cc \uc774\ub7ec\ud55c \ub2e8\uc810\uc740 \ud2b9\uc815\ud55c \uc0c1\ud669\uc5d0\uc11c\ub294 \uc544\ubb34\ub7f0 \ubb38\uc81c\uac00 \ub418\uc9c0 \uc54a\ub294 \uacbd\uc6b0\uac00 \uc788\uc73c\ubbc0\ub85c Node.js\uc5d0\uc11c \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\ub97c \uc774\uc6a9\ud55c \uc5f0\uc0b0\uc740 \ub9e4\uc6b0 \uc720\uc6a9\ud55c \uacbd\uc6b0\uac00 \ub9ce\ub2e4.<\/p>\n<p>\uba3c\uc800 \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\uc5d0\uc11c \uc218\ud589\ud560 \ucf54\ub4dc\ub294 worker.js \ud30c\uc77c\uc5d0 \ub2e4\uc74c\ucc98\ub7fc \uc791\uc131\ud55c\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\">\r\nconst process = require(\"process\");\r\n\r\nfunction getSum(arr) {\r\n    let sum = 0;\r\n    arr.forEach(i => {  sum += i; });\r\n    return sum;\r\n}\r\n\r\nprocess.on(\"message\", (message) => {\r\n    if(message.cmd === \"sum\") {\r\n        process.send({ result: getSum(message.data) });\r\n    }\r\n});\r\n<\/pre>\n<p>getSum\uc774\ub77c\ub294 \ud568\uc218\ub97c \ucc98\ub9ac\ud558\uba70 \ub2e4\ub978 \ud504\ub85c\uc138\uc2a4\ub85c\ubd80\ud130 \uc804\ub2ec \ubc1b\uc740 \ub370\uc774\ud130(\ubc30\uc5f4 \ud615\ud0dc) \uc548\uc758 \uc22b\uc790 \uac12\ub4e4\uc758 \ud569\uacc4\ub97c \uc804\ub2ec\ud574 \uc900\ub2e4.<\/p>\n<p>\uc774 worker.js\ub97c \uc0ac\uc6a9\ud558\ub294 \uc18c\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\">\r\nconst cp = require(\"child_process\");\r\nconst worker = cp.fork(\".\/worker.js\");\r\n\r\nfunction task(arr) {\r\n    return new Promise((resolve, reject) => {\r\n        function onMessage(message) {\r\n            resolve(message.result);\r\n            worker.removeListener(\"message\", onMessage);\r\n        }\r\n\r\n        worker.addListener(\"message\", onMessage);\r\n\r\n        worker.send({ \r\n            cmd: \"sum\",\r\n            data: arr\r\n        });\r\n    })\r\n}\r\n\r\ntask([1,2,3,4,5,6,7,8,9,10])\r\n    .then((result) => {\r\n        console.log(result);\r\n        worker.kill();\r\n    })\r\n    .catch(err => {\r\n        console.log(err);\r\n    });\r\n<\/pre>\n<p>4\ubc88 \ucf54\ub4dc\uc5d0\uc11c \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\uc5d0\uc11c \uc218\ud589\ub41c \uacb0\uacfc\ub97c \uc5bb\uae30 \uc704\ud574 Promise API\ub97c \uc0ac\uc6a9\ud588\ub2e4\ub294 \uc810. 20\ubc88 \ucf54\ub4dc\uc5d0\uc11c Prmoise\uc758 \uc77c\ubc18\uc801\uc778 \ucc98\ub9ac\ub97c \uc704\ud574 then, catch\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc815\uc0c1\uc801\uc778 \uacbd\uc6b0\uc640 \uc608\uc678\ucc98\ub9ac\ub97c \ud558\uace0 \uc788\ub2e4\ub294 \uc810\uc774 \ucf54\ub4dc\uc758 \uc644\uacb0\uc131\uc744 \ub290\ub07c\uac8c \ud574\uc900\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\ub97c \ud1b5\ud574 \uc5bb\ub294 \uc7a5\uc810\uc740 \uc5ec\ub7ec \uac1c\uc758 CPU\ub97c \ud65c\uc6a9\ud558\uc5ec \ubcf4\ub2e4 \ub354 \ube60\ub978 \uacb0\uacfc\ub97c \uc5bb\uc744 \uc218 \uc788\ub2e4\ub294 \uc810\uc778\ub370, \ub2e8\uc810\uc740 CPU \uac04\uc758 \ub370\uc774\ud130 \uacf5\uc720\uac00 \ucc38\uc870(Reference)\uac00 \uc544\ub2cc \ubcf5\uc0ac(Copy)\uc774\ubbc0\ub85c \uba54\ubaa8\ub9ac \uc0ac\uc6a9\ub7c9\uc774 2\ubc30\uac00 \ub41c\ub2e4\ub294 \uc810\uc774\ub2e4. \ud558\uc9c0\ub9cc \uc774\ub7ec\ud55c \ub2e8\uc810\uc740 \ud2b9\uc815\ud55c \uc0c1\ud669\uc5d0\uc11c\ub294 \uc544\ubb34\ub7f0 \ubb38\uc81c\uac00 \ub418\uc9c0 \uc54a\ub294 \uacbd\uc6b0\uac00 \uc788\uc73c\ubbc0\ub85c Node.js\uc5d0\uc11c \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\ub97c \uc774\uc6a9\ud55c \uc5f0\uc0b0\uc740 \ub9e4\uc6b0 \uc720\uc6a9\ud55c \uacbd\uc6b0\uac00 \ub9ce\ub2e4. \uba3c\uc800 \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\uc5d0\uc11c \uc218\ud589\ud560 \ucf54\ub4dc\ub294 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/www.gisdeveloper.co.kr\/?p=12410\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;Node.js\uc5d0\uc11c \ub3c5\ub9bd\uc801\uc778 \ud504\ub85c\uc138\uc2a4\ub97c \ud1b5\ud55c \uc5f0\uc0b0 \ubc0f \uadf8 \uacb0\uacfc \uc5bb\uae30&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[142],"tags":[],"class_list":["post-12410","post","type-post","status-publish","format-standard","hentry","category-node-js"],"_links":{"self":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/12410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12410"}],"version-history":[{"count":5,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/12410\/revisions"}],"predecessor-version":[{"id":12415,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/12410\/revisions\/12415"}],"wp:attachment":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12410"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}