{"id":533,"date":"2021-05-20T04:50:44","date_gmt":"2021-05-20T04:50:44","guid":{"rendered":"http:\/\/scrutineer.co.kr\/wordpress\/?p=533"},"modified":"2021-05-20T04:50:45","modified_gmt":"2021-05-20T04:50:45","slug":"%eb%aa%a8%eb%8d%98-%ec%9e%90%eb%b0%94-%ec%9d%b8-%ec%95%a1%ec%85%98-15%ec%9e%a5","status":"publish","type":"post","link":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/2021\/05\/20\/%eb%aa%a8%eb%8d%98-%ec%9e%90%eb%b0%94-%ec%9d%b8-%ec%95%a1%ec%85%98-15%ec%9e%a5\/","title":{"rendered":"\ubaa8\ub358 \uc790\ubc14 \uc778 \uc561\uc158 15\uc7a5"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">CompletableFuture<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud604\uc7ac \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \ubc29\ubc95\uc5d0\uc11c \ub450\uac00\uc9c0 \uc720\ud589\uc774 \uc788\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uba40\ud2f0\ucf54\uc5b4 \ud504\ub85c\uc138\uc11c\uc758 \ub4f1\uc7a5 &#8211;> \ubcd1\ub82c\uc2e4\ud589<\/li><li>\ub3c5\ub9bd \ub3d9\uc791\uc774 \uc544\ub2cc \ucee8\ud150\uce20 \uc81c\uacf5 \ub9e4\uc2dc\uc5c5 \ud615\ud0dc\uc758 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158 \ub300\ub450 &#8211;> MSA<\/li><\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ub3d9\uc2dc\uc131 : 1 core multi thread<\/p><p>\ubcd1\ub82c\uc131 : multi core multi thread<\/p><cite>\ub3d9\uc2dc\uc131 &amp; \ubcd1\ub82c\uc131<\/cite><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3d9\uc2dc\uc131 &amp; \ubcd1\ub82c\uc131\uc744 \ub9cc\uc871\ud558\uba70 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc751\ub2f5\uc18d\ub3c4\ub97c \ucd5c\ub300\ud55c \ube60\ub974\uac8c \uad6c\ud604\ud560 \uc218 \uc788\ub294\uc9c0\uc5d0 \ub300\ud55c \uac83\uc740 \ub9e4\uc6b0 \uc911\uc694\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ub358 \uc790\ubc14\uc5d0\uc11c\ub294 \uc774 \ub3d9\uc2dc\uc131&amp;\ubcd1\ub82c\uc131\uc744 \uc27d\uac8c \uad6c\ud604\ud558\uae30 \uc704\ud574 CompletableFuture \ub77c\ub294 \uc778\ud130\ud398\uc774\uc2a4\ub97c \ucd94\uac00\ud558\uc600\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uae30\uc874\uc5d4 Runnable, Thread\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub3d9\uae30\ud654\ub97c \uc2dc\ucf1c \ub85c\uc9c1\uc744 \uc218\ud589\ud558\uc600\ub2e4.<\/li><li>\uba40\ud2f0\ucf54\uc5b4 CPU\uac00 \ub9ce\uc774 \uc0c1\uc6a9\ud654 \ub418\uba74\uc11c \uc790\ubc147\uc740 \ud3ec\ud06c\/\uc870\uc778 \ud504\ub808\uc784\uc6cc\ud06c\uac00 \uc0dd\uacbc\uace0, \uc790\ubc148\uc5d0\ub294 \ubcd1\ub82c \uc2a4\ud2b8\ub9bc\uc774 \ucd94\uac00\ub418\uc5c8\ub2e4.<\/li><li>\uc790\ubc149\uc5d0\uc11c\ub294 \ube44\ub85c\uc18c \ubd84\uc0b0 \ube44\ub3d9\uae30 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uba85\uc2dc\uc801\uc73c\ub85c \uc9c0\uc6d0\ud55c\ub2e4<ul><li>\ubc1c\ud589(publish)-\uad6c\ub3c5(subscribe) \ud504\ub85c\ud1a0\ucf5c(pub&amp;sub\uc774\ub77c\uace0\ub3c4 \ud568.) &#8211;> \ub9ac\uc561\ud2f0\ube0c \ud504\ub85c\uadf8\ub798\ubc0d\uc784<\/li><\/ul><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\uba40\ud2f0\uc2a4\ub808\ub4dc \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \ucd94\uc0c1\ud654<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">0 ~ 1,000,000\uc744 \ub354\ud558\ub294 \ucf54\ub4dc\ub97c \uc791\uc131\ud558\ub294 \ucf54\ub4dc\ub97c \uc544\ubb34\ub7f0 \ucd94\uc0c1\ud654\ud328\ud134 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc73c\uba74<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">for (int i = 0 ; i &lt; 250000; i++) {\n  sum0 += stats[i];\n} \/\/ thread 0\n\nfor (int i = 250000 ; i &lt; 500000; i++) {\n  sum1 += stats[i];\n} \/\/ thread 1\n\nfor (int i = 500000 ; i &lt; 750000; i++) {\n  sum2 += stats[i];\n} \/\/ thread 2\n\nfor (int i = 750000 ; i &lt; 1000000; i++) {\n  sum3 += stats[i];\n} \/\/ thread 3\n\nfor (int i = 0 ; i &lt; thread.size(); i++) {\n  thread[i].join();\n}\n\nresult = sum0+sum1+sum2+sum3;<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\uc640 \ube44\uc2b7\ud55c \ub9e4\uc6b0 \ucd94\uc811\ucd94\uc811\ud55c \ucf54\ub4dc\uac00 \uc791\uc131\ub420 \uac83\uc774\ub2e4. \uc5d0\ub7ec \ubc1c\uc0dd\ube44\uc728\uc774 \ub192\uc544\uc9c0\ub294\uac74 \ub364..<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud558\uc9c0\ub9cc, \ub192\uc740 \uc218\uc900\uc73c\ub85c \ucd94\uc0c1\ud654\ub41c \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc774\uc6a9\ud558\uba74<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sum = Arrays.stream(stats).parallel().sum();<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc694\ub7f0 \uc2dd\uc73c\ub85c \ucf54\ub4dc\ub97c \uc5b4\uc5b4\uc5b4\uc5b4\uc5b4\uc5b4\uc5c4\uccad \uac04\uacb0\ud558\uac8c \ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud558\uc9c0\ub9cc \uc774\uac83\ub3c4 \ucf54\ub4dc\uc0c1\uc73c\ub85c\ub294 \uac04\ub2e8\ud574 \ubcf4\uc774\uc9c0\ub9cc, \ubcd1\ub82c \uc2a4\ud2b8\ub9bc\uc5d0\uc11c\ub294(\uae30\uc5b5\uc774 \uc798 \ub098\uc9c0 \uc54a\uc9c0\ub9cc \u314b) \uc774\ub97c \uc81c\ub300\ub85c \ud65c\uc6a9\ud558\uae30 \uc704\ud574\uc11c \uc5c4\uccad\ub09c \uc81c\uc57d\uc870\uac74\uc774 \ub9ce\uc558\uace0, \uc624\ud788\ub824 sequential\ub85c \ucc98\ub9ac\ud560 \ub584\ubcf4\ub2e4 \ub354 \ub290\ub9b0 \ucf00\uc774\uc2a4\ub3c4 \uc5c4\uccad \ub9ce\uc558\ub2e4&#8230; \uacb0\uad6d &#8216;\uc798 \uc54c\uace0 \uc0ac\uc6a9\ud574\uc57c \ud558\ub294&#8217; \uac74 \ubcc0\ud568\uc774 \uc5c6\uc74c..<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\uc774\ub807\uac8c \ucd94\uc0c1\ud654\ub97c \ud574\ub3c4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2a4\ub808\ub4dc\ub97c \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158 \ucf54\ub4dc\uc5d0\uc11c &#8216;\uc9c1\uc811&#8217; \ub9cc\uc9c0\ub294 \uac83\uc740 \uc5ec\ub7ec\ubaa8\ub85c \uc704\ud5d8\ud558\ub2e4&#8230; \uc704\ud5d8\ud574&#8230;.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>OS\uac00 \uc9c0\uc6d0\ud558\ub294 \uc2a4\ub808\ub4dc \uac1c\uc218\ub97c \ub118\ub294 \uacbd\uc6b0\uc5d0 \uc608\uc0c1\uce58 \ubabb\ud55c \uc0c1\ud669 \ubc1c\uc0dd<ul><li>Race Condition \ubb50 \uadf8\ub7f0\uac70..<\/li><\/ul><\/li><li>\ub3d9\uc77c\ud55c \uc18c\uc2a4\uc778\ub370 \ud558\ub4dc\uc6e8\uc5b4 spec\uc5d0 \ub530\ub77c\uc11c\ub3c4 \uc131\ub2a5\uc774 \uacb0\uc815\ub428<\/li><li>\uc544\ubb34\ub798\ub3c4&#8230;. \uc2a4\ub808\ub4dc\ub97c &#8216;\uc9c1\uc811&#8217; \uad00\ub9ac\ud55c\ub2e4\ub294 \uac83 \uc790\uccb4\uac00 \ubc84\uadf8(\uc7a5\uc560)\uc758 \uac00\ub2a5\uc131\uc774 \ub192\uc744 \uc218 \ubc16\uc5d0 \uc5c6\uc74c.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc554\ud2bc \uc2a4\ub808\ub4dc\ub97c \uc9c1\uc811 \uc774\uc6a9\ud558\ub294\uac74 \ub2e4\uc591\ud55c \ub2e8\uc810\uc774 \uc874\uc7ac\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub798\uc11c \uc0dd\uae34 \uac1c\ub150\uc774 \uc2a4\ub808\ub4dc \ud480.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc6cc\ucee4 \uc2a4\ub808\ub4dc\ub97c \uc801\uc808\ud788(\uc9c1\uc811\uc774 \uc544\ub2c8\ub77c \ub77c\uc774\ube0c\ub7ec\ub9ac\/API\ub4f1\uc774 \uad00\ub9ac\ud558\ub294 \uac1c\ub150) \ub9cc\ub4e4\uace0, \ud544\uc694\ud560\ub54c\ub9c8\ub2e4 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \uc2a4\ub808\ub4dc\ud480\uc5d0\uc11c \ub180\uace0 \uc788\ub294 \uc2a4\ub808\ub4dc\ub97c \ud558\ub098 \uaebc\ub0b4\uc640\uc11c \uc0ac\uc6a9\ud558\ub294 \uac1c\ub150&#8230;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc774\ub807\uac8c \uc2a4\ub808\ub4dc \ud480\uc744 \uc368\ub3c4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ub4e0 \ubb38\uc81c\uac00 \ud574\uacb0\ub418\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uc2a4\ub808\ub4dc \ud480\uc744 \uc0ac\uc6a9\ud558\ub294 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ub85c\uc9c1\uc774 I\/O wait\uc774 \uac78\ub9ac\ub294, (CPU\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294) \ub85c\uc9c1\uc774\uace0, \uc218\ud589\ud574\uc57c \ud560 \ud0dc\uc2a4\ud06c \uc218\uac00 \uc2a4\ub808\ub4dc \ud480\uc758 \uc218\ubcf4\ub2e4 \ub9ce\uc740 \uacbd\uc6b0\uba74 \uc624\ud788\ub824 \uc131\ub2a5\uc800\ud558\uac00 \uc0dd\uae38 \uc218 \uc788\ub2e4.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"605\" height=\"597\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image.png\" alt=\"\" class=\"wp-image-535\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image.png 605w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-300x296.png 300w\" sizes=\"auto, (max-width: 605px) 100vw, 605px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc5b4\uca0c\ub4e0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2a4\ub808\ub4dc\ub97c \uc9c1\uc811 \uc774\uc6a9\ud558\uac70\ub098 \uc2a4\ub808\ub4dc\ud480\uc744 \uc774\uc6a9\ud558\uc9c0 \uc54a\uace0, \ub3d9\uc2dc\uc131\uacfc \ubcd1\ub82c\uc131\uc744 \uc9c0\uc6d0\ud558\ub294 API \uc5d0 \ub300\ud574 \uacf5\ubd80\ud574 \ubcf8\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ub3d9\uae30 API\uc640 \ube44\ub3d9\uae30 API<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">int\uac12\uc744 \ub9ac\ud134\ud558\ub294 \ud2b9\uc815 \uba54\uc18c\ub4dc f(x)\uc640 g(x)\uc758 \uac12\uc744 \ud569\uce58\ub294 \uc608\uc81c\ub97c \uc0b4\ud3b4\ubcf4\uc790.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">int y = f(x);\nint z = g(x);\n\nresult = y+z;<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">f\uc640 g\uac00 \uc624\ub798 \uac78\ub9ac\ub294 \uc791\uc5c5\uc774\ub77c\uace0 \uac00\uc815\ud558\uc790.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub7fc \uc800 \ub2e8\uc21c\ud55c \ub85c\uc9c1\uc744 single-thread\ub85c \uc218\ud589\ud558\uba74 result\uac12\uc740 f\uc218\ud589\uc2dc\uac04 + g\uc218\ud589\uc2dc\uac04 \uc774 \uac78\ub9b0\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub108\ubb34 \uc624\ub798 \uac78\ub9b0\ub2e4 &amp;&amp; f \uc640 g\uac00 \uc11c\ub85c \uc758\uc874\uc131\uc774 \uc5c6\ub294 \ub85c\uc9c1 \uc774\ub77c\uba74, \ub450\uac1c\ub97c \ubcc4\ub3c4\uc758 \uc2a4\ub808\ub4dc\ub85c \ubcd1\ub82c\ub85c \uc218\ud589\ud558\uba74 \ub41c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"575\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-1.png\" alt=\"\" class=\"wp-image-537\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-1.png 758w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-1-300x228.png 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><figcaption>\ubcf5\uc7a1\ubcf5\uc7a1<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ubb50&#8230;.\ubcf4\ub2e4\uc2dc\ud53c \uac04\ub2e8\ud55c \ub85c\uc9c1\uc740 \uc544\ub2c8\ub2e4.\u314b\u314b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub798\uc11c Runnable \ub300\uc2e0 \uc2a4\ub808\ub4dc \ud480\uc744 \uc774\uc6a9\ud558\uba74 \uc870\uae08 \ub354 \uac04\ub2e8\ud558\uac8c \uc791\uc131\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"775\" height=\"400\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-2.png\" alt=\"\" class=\"wp-image-538\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-2.png 775w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-2-300x155.png 300w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-2-768x396.png 768w\" sizes=\"auto, (max-width: 775px) 100vw, 775px\" \/><figcaption>\uc5ec\uc804\ud788 \ubcf5\uc7a1\ubcf5\uc7a1<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uc804\ud788 newFixedThreadPool\ub85c \uc2a4\ub808\ub4dc\ud480\uc744 \ub9cc\ub4e4\uace0, \ub610 \bstart&amp;join\ub9cc \uc5c6\ub2e4\ubfd0\uc774\uc9c0 ExecutorService.submit\uc744 \ud1b5\ud574 \uba85\uc2dc\uc801\uc73c\ub85c \uba54\uc18c\ub4dc \ud638\ucd9c\uc744 \ud574\uc57c \ud558\ub294 \ucf54\ub4dc\uc758 \ub354\ub7ec\uc6c0\uc740 \uacc4\uc18d \uc720\uc9c0\ub418\uace0 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \ub354\ub7ec\uc6c0\uc744 \ud574\uacb0\ud558\uae30 \uc704\ud55c \ub300\ud45c\uc801\uc778 \ub450\uac00\uc9c0 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Future\ud615\uc2dd API<\/li><li>\ub9ac\uc561\ud2f0\ube0c \ud615\uc2dd API<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Future\ud615\uc2dd API<\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Future&lt;Integer> f(int x);\nFuture&lt;Integer> g(int x);\n\nFuture&lt;Integer> y = f(x);\nFuture&lt;Integer> z = g(x);\nresult = y.get() + z.get();\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">4\ubc88\uc9f8 \uc904\uc744 \uc2e4\ud589\ud558\ub294 \uc989\uc2dc, f\uba54\uc18c\ub4dc \ubc14\ub514\ub97c \ud3c9\uac00\ud558\ub294 \ud0dc\uc2a4\ud06c\uac00 \ud3ec\ud568\ub41c Future\uac00 \ub9ac\ud134\ub41c\ub2e4. \uadf8\ub9ac\uace0 6\ubc88\uc9f8 \ub77c\uc778 \uc218\ud589\uc744 \ud1b5\ud574\uc11c\uc57c  \ub450 Future\uac00 \uc644\ub8cc\ub420\ub54c\uae4c\uc9c0 \uae30\ub2e4\ub9b0\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ub9ac\uc561\ud2f0\ube0c \ud615\uc2dd API<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">f, g \uba54\uc18c\ub4dc \uc790\uccb4\ub97c \ubc14\uafd4\uc11c, \ucf5c\ubc31\uc744 \uc774\uc6a9\ud558\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"717\" height=\"515\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-3.png\" alt=\"\" class=\"wp-image-539\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-3.png 717w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-3-300x215.png 300w\" sizes=\"auto, (max-width: 717px) 100vw, 717px\" \/><figcaption>\uc774\ub7f0 \uc2dd\uc73c\ub85c&#8230;<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uadfc\ub370 \uc704 \ucf54\ub4dc\ub300\ub85c \uadf8\ub0e5 \ucf5c\ubc31\ub9cc \ucd94\uac00\ud55c\ub2e4\uba74 \uc5ec\ub7ec \uc7a0\uc7ac\uc801\uc778 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ub418\uae30\ub294 \ud55c\ub2e4<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uc0c1\ud669\uc5d0 \ub530\ub77c \uba3c\uc800 \uacc4\uc0b0\ub41c \uacb0\uacfc\uac00 \ucd9c\ub825\ub428<\/li><li>\ub77d\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc73c\ubbc0\ub85c \ud55c\ubc88\uc774 \uc544\ub2cc \ub450\ubc88\uc758 \ucd9c\ub825\ubb38\uc774 \ub098\uc62c \uc218 \uc788\uc74c<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7f0 \uacbd\uc6b0\ub294<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>if &#8211; else \uad6c\ubb38\uc744 \uc774\uc6a9\ud574 \uc801\uc808\ud558\uac8c \ub77d\uc744 \uc0ac\uc6a9\ud55c\ub2e4 (\uadfc\ub370 \uc774\ub7f4\uac70\uba74 Runnable\uc774\ub791 \ub2e4\ub97c\uac8c \uc5c6&#8230;)<\/li><li>\ub9ac\uc561\ud2f0\ube0c\ub294 \uc0ac\uc2e4 \ubcd1\ub82c\uc131\uc5d0 \uc911\uc810\uc744 \ub454 API\uac00 \uc544\ub2c8\ub77c, event-driven\ubc29\uc2dd\uc5d0 \ucd5c\uc801\ud654\ub41c API\ub77c\uc11c&#8230; \uad73\uc774 \uc774 \uc545\ubb3c\uace0 \ub9ac\uc561\ud2f0\ube0c API\ub97c \uc774\uc6a9\ud558\uc9c0 \ub9d0\uace0 Future\ub97c \uc774\uc6a9\ud558\ub294\uac83\uc774 \ub354 \uc88b\uc74c.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Blocking\uc740 \uae08\ubb3c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18d\ub3c4\uc81c\ud55c\uc744 \ud558\uae30 \uc704\ud574, \ud639\uc740 \uc5b4\ub5a4 \uc0c1\ud638\uc791\uc6a9\uc744 \ud558\uae30 \uc704\ud574 sleep()\uc744 \ud558\ub294\uac83\uc740 \ubc18\ub4dc\uc2dc \uadf8\ub798\uc57c \ud558\ub294 \uacbd\uc6b0 \uc544\ub2c8\uba74 \uc4f0\uc9c0 \ub9d0\uc790. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc29\uac01\ud558\uae30 \uc26c\uc6b4\uac8c, sleep\uc740 yield\uac00 \uc544\ub2c8\ub77c block \uc0c1\ud0dc\uc5d0 \uc9c4\uc785\ud55c\ub2e4..<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub798\uc11c \uc5bc\ub9c8\uac04\uc758 \uc2dc\uac04\ub3d9\uc548 \ud2b9\uc815 \uc2a4\ub808\ub4dc\ub97c \uba48\ucd94\uac8c \ud558\uace0 \uc2f6\uc73c\uba74, \ub2e8\uc21c\ud788 sleep\uc744 \ud558\uc9c0 \ub9d0\uace0 \uc774\ub7f0 \uc2dd\uc73c\ub85c yield\uac00 \ub4e4\uc5b4\uac00\ub294 \ucf54\ub4dc\ub97c \uc791\uc131\ud574\uc57c \ud560 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uccab\uc9f8,<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"478\" height=\"102\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-5.png\" alt=\"\" class=\"wp-image-541\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-5.png 478w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-5-300x64.png 300w\" sizes=\"auto, (max-width: 478px) 100vw, 478px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ub458\uc9f8,<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"767\" height=\"574\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-4.png\" alt=\"\" class=\"wp-image-540\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-4.png 767w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/05\/image-4-300x225.png 300w\" sizes=\"auto, (max-width: 767px) 100vw, 767px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ub458 \ub2e4 \ub3d9\uc77c\ud55c \ub3d9\uc791\uc774 \uc218\ud589\ub418\uc9c0\ub9cc,sleep\ud558\ub294 \uc21c\uac04 \uc81c 3\uc758 \uc2a4\ub808\ub4dc \ub0b4\uc9c0\ub294 \uc81c 3\uc758 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc774 CPU\uc790\uc6d0\uc744 \uc810\uc720\ud558\uc5ec \uc0ac\uc6a9\ud560 \uc5ec\uc9c0\uac00 \uc788\ub294\uc9c0 \uc5c6\ub294\uc9c0\uc5d0 \ub300\ud55c \uc911\uc694\ud55c \ucc28\uc774\uac00 \uc788\ub2e4<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\uccab\ubc88\uc9f8\ucf54\ub4dc : work1 ~ work2\uac00 \ub2e4 \uc218\ud589\ub420\ub54c\uae4c\uc9c0 CPU 100%<\/li><li>\ub450\ubc88\uc9f8\ucf54\ub4dc : work1\uac00 \uc218\ud589\ub418\uace0 10\ucd08\ub3d9\uc548 CPU 0%. work2\uac00 \uc218\ud589\ub418\uba74\uc11c \uc885\ub8cc<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud56d\uc0c1 \ucf54\ub4dc\ub97c \uc791\uc131\ud560\ub584\ub9c8\ub2e4 \uc774 \uc810 \uc798 \uc778\uc9c0\ud558\uace0, \uc880 \ub354 \ubcf5\uc7a1\ud558\ub354\ub77c\uace0 \ub450\ubc88\uc9f8 \ucf54\ub4dc\ucc98\ub7fc \uac1c\ubc1c\uc744 \ud558\ub294 \uc2b5\uad00\uc744 \ub4e4\uc774\uc790.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CompletableFuture \ud604\uc7ac \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uac1c\ubc1c \ubc29\ubc95\uc5d0\uc11c \ub450\uac00\uc9c0 \uc720\ud589\uc774 \uc788\ub2e4. \uba40\ud2f0\ucf54\uc5b4 \ud504\ub85c\uc138\uc11c\uc758 \ub4f1\uc7a5 &#8211;> \ubcd1\ub82c\uc2e4\ud589 \ub3c5\ub9bd \ub3d9\uc791\uc774 \uc544\ub2cc \ucee8\ud150\uce20 \uc81c\uacf5 \ub9e4\uc2dc\uc5c5 \ud615\ud0dc\uc758 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158 \ub300\ub450 &#8211;> MSA \ub3d9\uc2dc\uc131 : 1 core multi thread \ubcd1\ub82c\uc131 : multi core multi thread \ub3d9\uc2dc\uc131 &amp; \ubcd1\ub82c\uc131 \ub3d9\uc2dc\uc131 &amp; \ubcd1\ub82c\uc131\uc744 \ub9cc\uc871\ud558\uba70 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc751\ub2f5\uc18d\ub3c4\ub97c \ucd5c\ub300\ud55c \ube60\ub974\uac8c \uad6c\ud604\ud560 \uc218 \uc788\ub294\uc9c0\uc5d0 \ub300\ud55c \uac83\uc740 \ub9e4\uc6b0 \uc911\uc694\ud558\ub2e4. \ubaa8\ub358 &#8230; <a title=\"\ubaa8\ub358 \uc790\ubc14 \uc778 \uc561\uc158 15\uc7a5\" class=\"read-more\" href=\"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/2021\/05\/20\/%eb%aa%a8%eb%8d%98-%ec%9e%90%eb%b0%94-%ec%9d%b8-%ec%95%a1%ec%85%98-15%ec%9e%a5\/\" aria-label=\"Read more about \ubaa8\ub358 \uc790\ubc14 \uc778 \uc561\uc158 15\uc7a5\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-533","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=533"}],"version-history":[{"count":3,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/533\/revisions"}],"predecessor-version":[{"id":542,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/533\/revisions\/542"}],"wp:attachment":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}