{"id":2699,"date":"2026-10-24T09:23:59","date_gmt":"2026-10-24T09:23:59","guid":{"rendered":"https:\/\/wayhope.kro.kr\/?p=2699"},"modified":"2026-10-24T09:23:59","modified_gmt":"2026-10-24T09:23:59","slug":"%ec%84%9c%eb%b2%84-%ec%98%a4%eb%a5%98-%eb%b0%8f-%eb%b3%b5%ea%b5%ac-%ec%84%a4%ea%b3%84-%ec%9e%ac%ec%8b%9c%eb%8f%84-dlq-transactional-outbox-%eb%a9%b1%eb%93%b1-%ec%86%8c%eb%b9%84%ec%9e%90","status":"publish","type":"post","link":"https:\/\/wayhope.kro.kr\/?p=2699","title":{"rendered":"\uc11c\ubc84 \uc624\ub958 \ubc0f \ubcf5\uad6c \uc124\uacc4 #\uc7ac\uc2dc\ub3c4, DLQ, Transactional Outbox, \uba71\ub4f1 \uc18c\ube44\uc790"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\ubd84\uc0b0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc624\ub958\ub294 \uc608\uc678\uc801\uc778 \uc0c1\ud669\uc774 \uc544\ub2c8\ub2e4. \ub124\ud2b8\uc6cc\ud06c \ub2e8\uc808, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud0c0\uc784\uc544\uc6c3, \uc11c\ubc84 \uc7ac\uc2dc\uc791, \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4 \uc7a5\uc560 \ub4f1 \ub2e4\uc591\ud55c \uc6d0\uc778\uc73c\ub85c \uc791\uc5c5\uc774 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc911\uc694\ud55c \uac83\uc740 \uc624\ub958\ub97c \uc644\uc804\ud788 \uc5c6\uc560\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, <strong>\uc2e4\ud328\ud55c \uc791\uc5c5\uc744 \uc548\uc804\ud558\uac8c \ubcf5\uad6c\ud558\uace0 \uc911\ubcf5 \uc2e4\ud589\uacfc \ub370\uc774\ud130 \ubd88\uc77c\uce58\ub97c \ubc29\uc9c0\ud558\ub294 \uac83<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c \ud50c\ub808\uc774\uc5b4\uac00 \ubcf4\uc2a4\ub97c \ucc98\uce58\ud558\uba74 \uc804\ud22c \uacb0\uacfc \uc800\uc7a5, \ubcf4\uc0c1 \uc9c0\uae09, \uc5c5\uc801 \uac31\uc2e0, \ub7ad\ud0b9 \uc5c5\ub370\uc774\ud2b8, \uc54c\ub9bc \uc804\uc1a1 \ub4f1\uc758 \uc791\uc5c5\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uacfc\uc815\uc5d0\uc11c \ubcf4\uc0c1 \uc9c0\uae09\uc740 \uc131\uacf5\ud588\uc9c0\ub9cc \ub7ad\ud0b9 \uc5c5\ub370\uc774\ud2b8\uac00 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4. \uc804\uccb4 \uc791\uc5c5\uc744 \ubb34\uc791\uc815 \uc7ac\uc2dc\ub3c4\ud558\uba74 \ubcf4\uc0c1\uc774 \uc911\ubcf5 \uc9c0\uae09\ub420 \uc218 \uc788\uace0, \uc7ac\uc2dc\ub3c4\ud558\uc9c0 \uc54a\uc73c\uba74 \ub7ad\ud0b9 \ub370\uc774\ud130\uac00 \ub204\ub77d\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7ec\ud55c \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub824\uba74 \uc7ac\uc2dc\ub3c4\uc640 \uc9c0\uc218 \ubc31\uc624\ud504, Dead Letter Queue, Transactional Outbox, \uc2e4\ud328 \uc791\uc5c5 \uc7ac\ucc98\ub9ac, \uba71\ub4f1 \uc18c\ube44\uc790 \uc124\uacc4\uac00 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc7ac\uc2dc\ub3c4\uc640 \uc9c0\uc218 \ubc31\uc624\ud504<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7ac\uc2dc\ub3c4\uc758 \ubaa9\uc801<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\uc2dc\ub3c4(Retry)\ub294 \uc77c\uc2dc\uc801\uc778 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\uc744 \ub54c \ub3d9\uc77c\ud55c \uc791\uc5c5\uc744 \ub2e4\uc2dc \uc2e4\ud589\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ud45c\uc801\uc778 \uc7ac\uc2dc\ub3c4 \ub300\uc0c1\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc77c\uc2dc\uc801\uc778 \ub124\ud2b8\uc6cc\ud06c \uc5f0\uacb0 \uc2e4\ud328<\/li>\n\n\n\n<li>\ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5f0\uacb0 \ud0c0\uc784\uc544\uc6c3<\/li>\n\n\n\n<li>HTTP \uc11c\ubc84\uc758 \uc77c\uc2dc\uc801\uc778 \uc624\ub958<\/li>\n\n\n\n<li>\uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uc758 \uc77c\uc2dc\uc801\uc778 \uc7a5\uc560<\/li>\n\n\n\n<li>\uc678\ubd80 API\uc758 \uc694\uccad \uc81c\ud55c\uc774\ub098 \uacfc\ubd80\ud558<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\uba74 \uc798\ubabb\ub41c \uc785\ub825\uac12, \uad8c\ud55c \ubd80\uc871, \ub370\uc774\ud130 \ubb34\uacb0\uc131 \uc704\ubc18\ucc98\ub7fc \uc694\uccad \uc790\uccb4\uc5d0 \ubb38\uc81c\uac00 \uc788\ub2e4\uba74 \ubb34\uc870\uac74 \uc7ac\uc2dc\ub3c4\ud574\uc11c\ub294 \uc548 \ub41c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uc624\ub958 \uc720\ud615<\/th><th>\uc77c\ubc18\uc801\uc778 \ucc98\ub9ac<\/th><\/tr><tr><td>\ub124\ud2b8\uc6cc\ud06c \uc77c\uc2dc \uc7a5\uc560<\/td><td>\uc81c\ud55c\ub41c \uc7ac\uc2dc\ub3c4<\/td><\/tr><tr><td>HTTP 429<\/td><td>\uc11c\ubc84\uac00 \uc81c\uc2dc\ud55c \ub300\uae30 \uc2dc\uac04 \ub4f1\uc744 \uace0\ub824\ud574 \uc7ac\uc2dc\ub3c4<\/td><\/tr><tr><td>HTTP 502, 503, 504<\/td><td>\uc815\ucc45\uc5d0 \ub530\ub77c \uc7ac\uc2dc\ub3c4<\/td><\/tr><tr><td>HTTP 400<\/td><td>\uc785\ub825\uac12 \uc218\uc815 \uc5c6\uc774\ub294 \uc7ac\uc2dc\ub3c4\ud558\uc9c0 \uc54a\uc74c<\/td><\/tr><tr><td>HTTP 401, 403<\/td><td>\uc778\uc99d \ub610\ub294 \uad8c\ud55c \ubb38\uc81c \ud574\uacb0<\/td><\/tr><tr><td>\ub370\uc774\ud130 \ubb34\uacb0\uc131 \uc704\ubc18<\/td><td>\uc6d0\uc778 \ubd84\uc11d \ud6c4 \ucc98\ub9ac<\/td><\/tr><tr><td>\ud0c0\uc784\uc544\uc6c3<\/td><td>\uc791\uc5c5 \ubc18\uc601 \uc5ec\ubd80\ub97c \ud655\uc778\ud55c \ub4a4 \uc7ac\uc2dc\ub3c4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ud2b9\ud788 \ud0c0\uc784\uc544\uc6c3\uc740 \uc8fc\uc758\ud574\uc57c \ud55c\ub2e4. \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uc751\ub2f5\uc744 \ubc1b\uc9c0 \ubabb\ud588\ub354\ub77c\ub3c4 \uc11c\ubc84\uc5d0\uc11c\ub294 \uc791\uc5c5\uc774 \uc774\ubbf8 \uc644\ub8cc\ub410\uc744 \uc218 \uc788\uae30 \ub54c\ubb38\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc9c0\uc218 \ubc31\uc624\ud504<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\uc815\ud55c \uac04\uaca9\uc73c\ub85c \uc7ac\uc2dc\ub3c4\ud558\uba74 \uc5ec\ub7ec \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc774 \ub3d9\uc2dc\uc5d0 \ubab0\ub9b4 \uc218 \uc788\ub2e4. \uc11c\ubc84\uac00 \uacfc\ubd80\ud558 \uc0c1\ud0dc\ub77c\uba74 \uc7ac\uc2dc\ub3c4 \uc694\uccad\uc774 \ubd80\ud558\ub97c \ub354\uc6b1 \uc99d\uac00\uc2dc\ud0a4\ub294 \uc545\uc21c\ud658\uc774 \ubc1c\uc0dd\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc9c0\uc218 \ubc31\uc624\ud504(Exponential Backoff)\ub294 \uc7ac\uc2dc\ub3c4\ud560 \ub54c\ub9c8\ub2e4 \ub300\uae30 \uc2dc\uac04\uc744 \uc810\uc9c4\uc801\uc73c\ub85c \ub298\ub9ac\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>delay = min(baseDelay * 2^attempt, maxDelay)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd08\uae30 \ub300\uae30 \uc2dc\uac04\uc774 \uc9e7\ub354\ub77c\ub3c4 \uc7ac\uc2dc\ub3c4\uac00 \ubc18\ubcf5\ub418\uba74 \ub300\uae30 \uc2dc\uac04\uc774 \uc99d\uac00\ud55c\ub2e4. \ucd5c\ub300 \ub300\uae30 \uc2dc\uac04\uc744 \uc124\uc815\ud558\uba74 \ubb34\ud55c\uc815 \uae34 \ub300\uae30 \uc2dc\uac04\uc774 \ubc1c\uc0dd\ud558\ub294 \uac83\ub3c4 \ubc29\uc9c0\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc9c0\uc218 \ubc31\uc624\ud504\uc5d0 \ubb34\uc791\uc704 \uc9c0\uc5f0\uc744 \ucd94\uac00\ud558\ub294 Jitter \uae30\ubc95\ub3c4 \uc790\uc8fc \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function calculateBackoff(attempt) {\n  const baseDelay = 500;\n  const maxDelay = 8000;\n\n  const exponentialDelay = Math.min(\n    baseDelay * 2 ** attempt,\n    maxDelay\n  );\n\n  return Math.random() * exponentialDelay;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \ubc29\uc2dd\uc740 Full Jitter\uc5d0 \ud574\ub2f9\ud55c\ub2e4. \uacc4\uc0b0\ub41c \ucd5c\ub300 \ub300\uae30 \uc2dc\uac04 \ubc94\uc704\uc5d0\uc11c \uc2e4\uc81c \ub300\uae30 \uc2dc\uac04\uc744 \ubb34\uc791\uc704\ub85c \uc120\ud0dd\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub97c \ud1b5\ud574 \uc5ec\ub7ec \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uac19\uc740 \uc2dc\uc810\uc5d0 \uc7ac\uc2dc\ub3c4\ud558\ub294 \ud604\uc0c1\uc744 \uc644\ud654\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc2e4\ubb34 \uc801\uc6a9 \uc2dc \uc8fc\uc758\uc810<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\uc2dc\ub3c4 \ub85c\uc9c1\uc5d0\ub294 \ucd5c\ub300 \uc7ac\uc2dc\ub3c4 \ud69f\uc218, \uc804\uccb4 \uc2e4\ud589 \uc2dc\uac04 \uc81c\ud55c, \uc7ac\uc2dc\ub3c4 \uac00\ub2a5\ud55c \uc624\ub958 \ubd84\ub958, \uc694\uccad \ucde8\uc18c, \ud0c0\uc784\uc544\uc6c3, \uc7ac\uc2dc\ub3c4 \uc774\ub825 \uad00\ub9ac\uac00 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub610\ud55c \uc5ec\ub7ec \uacc4\uce35\uc5d0\uc11c \uac01\uac01 \uc7ac\uc2dc\ub3c4\ud558\uba74 \uc2e4\uc81c \uc694\uccad \ud69f\uc218\uac00 \uc608\uc0c1\ubcf4\ub2e4 \ud06c\uac8c \uc99d\uac00\ud560 \uc218 \uc788\ub2e4. HTTP \ud074\ub77c\uc774\uc5b8\ud2b8, \uc11c\ube44\uc2a4 \uacc4\uce35, \uba54\uc2dc\uc9c0 \uc18c\ube44\uc790\uac00 \uac01\uac01 \uc7ac\uc2dc\ub3c4\ud558\ub294 \uad6c\uc870\ub77c\uba74 \uc804\uccb4 \uc7ac\uc2dc\ub3c4 \uc608\uc0b0\uc744 \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud575\uc2ec\uc740 \uc77c\uc2dc\uc801\uc778 \uc624\ub958\uc5d0\ub294 \uc7ac\uc2dc\ub3c4\ud558\ub418, \uc7ac\uc2dc\ub3c4\uac00 \uc2dc\uc2a4\ud15c \uc7a5\uc560\ub97c \uc99d\ud3ed\uc2dc\ud0a4\uc9c0 \uc54a\ub3c4\ub85d \uc81c\ud55c\ud558\ub294 \uac83\uc774\ub2e4.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dead Letter Queue<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">DLQ\uc758 \uc5ed\ud560<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Dead Letter Queue(DLQ)\ub294 \uc815\uc0c1\uc801\uc778 \ucc98\ub9ac\uc5d0 \ubc18\ubcf5\uc801\uc73c\ub85c \uc2e4\ud328\ud55c \uba54\uc2dc\uc9c0\ub97c \ubcc4\ub3c4\uc758 \ud050\ub098 \uc800\uc7a5\uc18c\ub85c \uc774\ub3d9\uc2dc\ucf1c \uaca9\ub9ac\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ubcf4\uc0c1 \uc9c0\uae09 \uba54\uc2dc\uc9c0\ub97c \uc18c\ube44\ud558\ub294 \uc11c\ubc84\uac00 \uc798\ubabb\ub41c \ub370\uc774\ud130 \uad6c\uc870 \ub54c\ubb38\uc5d0 \uba54\uc2dc\uc9c0\ub97c \ucc98\ub9ac\ud558\uc9c0 \ubabb\ud55c\ub2e4\uace0 \uac00\uc815\ud558\uc790.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud574\ub2f9 \uba54\uc2dc\uc9c0\ub97c \ubb34\ud55c\ud788 \uc7ac\uc2dc\ub3c4\ud558\uba74 \uc815\uc0c1 \uba54\uc2dc\uc9c0\uc758 \ucc98\ub9ac\uae4c\uc9c0 \uc9c0\uc5f0\ub420 \uc218 \uc788\uace0, \ub9ac\uc18c\uc2a4 \ub0ad\ube44\uc640 \uc624\ub958 \ub85c\uadf8 \uc99d\uac00\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DLQ\ub294 \uc774\ub7ec\ud55c \uba54\uc2dc\uc9c0\ub97c \uc77c\ubc18 \ucc98\ub9ac \uacbd\ub85c\uc5d0\uc11c \ubd84\ub9ac\ud574 \uc815\uc0c1 \uc791\uc5c5\uc774 \uacc4\uc18d \uc9c4\ud589\ub418\ub3c4\ub85d \ub3d5\ub294\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DLQ \ucc98\ub9ac \ud750\ub984<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>Producer\n   |\n   v\nMain Queue\n   |\n   v\nConsumer\n   |\n   +---- \uc131\uacf5 ----&gt; ACK\n   |\n   +---- \uc2e4\ud328 ----&gt; \uc7ac\uc2dc\ub3c4\n                    |\n                    +---- \uc131\uacf5 ----&gt; ACK\n                    |\n                    +---- \ucd5c\ub300 \uc7ac\uc2dc\ub3c4 \ucd08\uacfc\n                               |\n                               v\n                              DLQ\n                               |\n                               v\n                       \uc6d0\uc778 \ubd84\uc11d \ubc0f \ubcf5\uad6c\n                               |\n                               v\n                         \uc7ac\ucc98\ub9ac \ub610\ub294 \ud3d0\uae30<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">ACK\ub294 \uba54\uc2dc\uc9c0 \ucc98\ub9ac\uac00 \uc644\ub8cc\ub418\uc5c8\uc74c\uc744 \ube0c\ub85c\ucee4\uc5d0 \uc54c\ub9ac\ub294 \ud655\uc778 \uc751\ub2f5\uc774\ub2e4. \uad6c\uccb4\uc801\uc778 \ub3d9\uc791\uc740 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uc758 \uc804\ub2ec \ubc0f \ud655\uc778 \ubc29\uc2dd\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c4\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DLQ\uc5d0 \uc800\uc7a5\ud574\uc57c \ud558\ub294 \uc815\ubcf4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\ud328 \uba54\uc2dc\uc9c0\ub97c \ub098\uc911\uc5d0 \ubcf5\uad6c\ud558\ub824\uba74 \uc6d0\ubcf8 \ub370\uc774\ud130\ubfd0 \uc544\ub2c8\ub77c \uc2e4\ud328 \uc774\ub825\ub3c4 \ud568\uaed8 \uad00\ub9ac\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\ud56d\ubaa9<\/th><th>\ubaa9\uc801<\/th><\/tr><tr><td>messageId<\/td><td>\uba54\uc2dc\uc9c0 \uc2dd\ubcc4<\/td><\/tr><tr><td>payload<\/td><td>\uc6d0\ubcf8 \uba54\uc2dc\uc9c0<\/td><\/tr><tr><td>errorCode<\/td><td>\uc2e4\ud328 \uc720\ud615 \ubd84\ub958<\/td><\/tr><tr><td>errorMessage<\/td><td>\uc2e4\ud328 \uc6d0\uc778 \ubd84\uc11d<\/td><\/tr><tr><td>retryCount<\/td><td>\uc7ac\uc2dc\ub3c4 \ud69f\uc218<\/td><\/tr><tr><td>firstFailedAt<\/td><td>\ucd5c\ucd08 \uc2e4\ud328 \uc2dc\uac01<\/td><\/tr><tr><td>lastFailedAt<\/td><td>\ucd5c\uadfc \uc2e4\ud328 \uc2dc\uac01<\/td><\/tr><tr><td>consumerName<\/td><td>\uc2e4\ud328\ud55c \uc18c\ube44\uc790 \uc2dd\ubcc4<\/td><\/tr><tr><td>correlationId<\/td><td>\uad00\ub828 \uc694\uccad \ubc0f \uc791\uc5c5 \ucd94\uc801<\/td><\/tr><tr><td>schemaVersion<\/td><td>\uba54\uc2dc\uc9c0 \ud615\uc2dd \ubc84\uc804 \ud655\uc778<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ubbfc\uac10\ud55c \uac1c\uc778\uc815\ubcf4\ub098 \uc778\uc99d \uc815\ubcf4\uac00 \ud3ec\ud568\ub420 \uc218 \uc788\uc73c\ubbc0\ub85c \uc800\uc7a5 \uc815\ucc45\uacfc \uc811\uadfc \uad8c\ud55c\ub3c4 \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DLQ \uc6b4\uc601\uacfc \uc7ac\ucc98\ub9ac<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DLQ\ub294 \uc2e4\ud328\ub97c \uc790\ub3d9\uc73c\ub85c \ud574\uacb0\ud558\ub294 \uc7a5\uce58\uac00 \uc544\ub2c8\ub2e4. \uc2e4\ud328 \uba54\uc2dc\uc9c0\ub97c \uaca9\ub9ac\ud558\uace0 \uc6d0\uc778\uc744 \ubd84\uc11d\ud574 \ubcf5\uad6c\ud560 \uc218 \uc788\ub3c4\ub85d \ub9cc\ub4dc\ub294 \uc7a5\uce58\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc6b4\uc601 \ud658\uacbd\uc5d0\uc11c\ub294 \ub2e4\uc74c \uae30\ub2a5\uc774 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DLQ \uba54\uc2dc\uc9c0 \uc218\uc640 \uc99d\uac00\uc728 \ubaa8\ub2c8\ud130\ub9c1<\/li>\n\n\n\n<li>\uc2e4\ud328 \uc720\ud615\ubcc4 \uc9d1\uacc4<\/li>\n\n\n\n<li>\ubc18\ubcf5 \uc2e4\ud328 \uc54c\ub9bc<\/li>\n\n\n\n<li>\uba54\uc2dc\uc9c0 \uc870\ud68c \ubc0f \uc0c1\uc138 \ubd84\uc11d<\/li>\n\n\n\n<li>\uc7ac\ucc98\ub9ac \uad8c\ud55c \uad00\ub9ac<\/li>\n\n\n\n<li>\uc7ac\ucc98\ub9ac \uc774\ub825 \uae30\ub85d<\/li>\n\n\n\n<li>\uba54\uc2dc\uc9c0 \ubcf4\uc874 \ubc0f \uc0ad\uc81c \uc815\ucc45<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">DLQ\uc5d0 \uba54\uc2dc\uc9c0\uac00 \uacc4\uc18d \uc313\uc778\ub2e4\uba74 \uc798\ubabb\ub41c \ub370\uc774\ud130, \uc18c\ube44\uc790 \ucf54\ub4dc\uc758 \ubc84\uadf8, \uc678\ubd80 \uc2dc\uc2a4\ud15c \uc7a5\uc560 \ub4f1\uc744 \uc758\uc2ec\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\ucc98\ub9ac\ud558\uae30 \uc804\uc5d0 \uc2e4\ud328 \uc6d0\uc778\uc744 \ud574\uacb0\ud574\uc57c \ud55c\ub2e4. \uba54\uc2dc\uc9c0 \ud615\uc2dd\uc774 \uc798\ubabb\ub418\uc5c8\ub294\ub370 \uadf8\ub300\ub85c \uc7ac\ubc1c\ud589\ud558\uba74 \uac19\uc740 \uc624\ub958\uac00 \ubc18\ubcf5\ub41c\ub2e4. \uc774\ubbf8 \ubc18\uc601\ub41c \ub370\uc774\ud130\uac00 \ub2e4\uc2dc \ubc18\uc601\ub418\uc9c0 \uc54a\ub3c4\ub85d \uba71\ub4f1\uc131 \uc124\uacc4\ub3c4 \ud568\uaed8 \uc801\uc6a9\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Transactional Outbox<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4 \uc0ac\uc774\uc758 \ubb38\uc81c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Transactional Outbox\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubcc0\uacbd\uacfc \uc774\ubca4\ud2b8 \ubc1c\ud589 \uc0ac\uc774\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \ub370\uc774\ud130 \ubd88\uc77c\uce58 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud55c \ud328\ud134\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ud50c\ub808\uc774\uc5b4\uac00 \uc544\uc774\ud15c\uc744 \uad6c\ub9e4\ud558\uba74 \ud3ec\uc778\ud2b8\ub97c \ucc28\uac10\ud558\uace0 \uc544\uc774\ud15c\uc744 \uc9c0\uae09\ud55c \ub4a4, \uad6c\ub9e4 \uc774\ubca4\ud2b8\ub97c \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uc5d0 \ubc1c\ud589\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>await database.transaction(async tx =&gt; {\n  await tx.points.decrement(playerId, price);\n  await tx.inventory.add(playerId, itemId);\n});\n\nawait messageBroker.publish({\n  type: \"ItemPurchased\",\n  playerId,\n  itemId\n});<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uc740 \uc131\uacf5\ud588\uc9c0\ub9cc \uc774\ubca4\ud2b8 \ubc1c\ud589\uc5d0 \uc2e4\ud328\ud558\uba74 \ub2e4\ub978 \uc11c\ube44\uc2a4\ub294 \uad6c\ub9e4 \uc0ac\uc2e4\uc744 \uc54c \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\ub300\ub85c \uc774\ubca4\ud2b8\ub97c \uba3c\uc800 \ubc1c\ud589\ud558\uace0 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uc774 \uc2e4\ud328\ud558\uba74 \uc2e4\uc81c\ub85c \uad6c\ub9e4\ub418\uc9c0 \uc54a\uc740 \uc544\uc774\ud15c\uc5d0 \ub300\ud55c \uc774\ubca4\ud2b8\uac00 \uc804\ub2ec\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uac00 \uc11c\ub85c \ub2e4\ub978 \uc2dc\uc2a4\ud15c\uc774\ub77c\uba74 \uc77c\ubc18\uc801\uc778 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\ub9cc\uc73c\ub85c \ub450 \uc2dc\uc2a4\ud15c\uc758 \ubcc0\uacbd\uc744 \uc6d0\uc790\uc801\uc73c\ub85c \ubb36\uc744 \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Outbox \ud328\ud134\uc758 \ud575\uc2ec<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ubca4\ud2b8\ub97c \uc989\uc2dc \ube0c\ub85c\ucee4\uc5d0 \ubc1c\ud589\ud558\ub294 \ub300\uc2e0, \ube44\uc988\ub2c8\uc2a4 \ub370\uc774\ud130\uc640 \uc774\ubca4\ud2b8 \uae30\ub85d\uc744 \ub3d9\uc77c\ud55c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \uc800\uc7a5\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Outbox \ud14c\uc774\ube14\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\uc131\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE outbox_events (\n    id VARCHAR(36) PRIMARY KEY,\n    aggregate_id VARCHAR(100) NOT NULL,\n    event_type VARCHAR(100) NOT NULL,\n    payload JSON NOT NULL,\n    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,\n    published_at TIMESTAMP NULL\n);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ubca4\ud2b8 \ubc1c\ud589 \uc5ec\ubd80, \uc7ac\uc2dc\ub3c4 \ud69f\uc218, \ub9c8\uc9c0\ub9c9 \uc624\ub958 \ub4f1\uc744 \ubcc4\ub3c4 \uceec\ub7fc\uc73c\ub85c \uad00\ub9ac\ud560 \uc218\ub3c4 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uad6c\ub9e4 \ucc98\ub9ac \uc608\uc2dc\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>await database.transaction(async tx =&gt; {\n  await tx.points.decrement(playerId, price);\n  await tx.inventory.add(playerId, itemId);\n\n  await tx.outbox.insert({\n    id: crypto.randomUUID(),\n    aggregateId: playerId,\n    eventType: \"ItemPurchased\",\n    payload: JSON.stringify({\n      playerId,\n      itemId,\n      price\n    })\n  });\n});<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ud3ec\uc778\ud2b8 \ucc28\uac10, \uc544\uc774\ud15c \uc9c0\uae09, \uc774\ubca4\ud2b8 \uae30\ub85d\uc740 \ub3d9\uc77c\ud55c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uc5d0 \ud3ec\ud568\ub41c\ub2e4. \ud2b8\ub79c\uc7ad\uc158\uc774 \ucee4\ubc0b\ub418\uba74 \ud568\uaed8 \ubc18\uc601\ub418\uace0, \ub864\ubc31\ub418\uba74 \ud568\uaed8 \ucde8\uc18c\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \uad6c\ud604\uc5d0\uc11c\ub294 \ud3ec\uc778\ud2b8 \uc794\uc561 \uac80\uc99d\uacfc \ub3d9\uc2dc \uad6c\ub9e4\uc5d0 \ub300\ud55c \ub3d9\uc2dc\uc131 \uc81c\uc5b4\ub3c4 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Outbox Relay<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Outbox \ud14c\uc774\ube14\uc5d0 \uc800\uc7a5\ub41c \uc774\ubca4\ud2b8\ub97c \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\ub85c \uc804\ub2ec\ud558\ub294 \ubcc4\ub3c4 \ud504\ub85c\uc138\uc2a4\ub97c Outbox Relay\ub77c\uace0 \ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"> <code>               Database Transaction\n                         |\n             +-----------+-----------+\n             |                       |\n             v                       v\n       Business Data            Outbox Table\n                                     |\n                                     v\n                                Outbox Relay\n                                     |\n                                     v\n                               Message Broker\n                                     |\n                                     v\n                                  Consumer<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Relay\ub294 \uc544\uc9c1 \ubc1c\ud589\ub418\uc9c0 \uc54a\uc740 \uc774\ubca4\ud2b8\ub97c \uc870\ud68c\ud558\uace0 \ube0c\ub85c\ucee4\uc5d0 \uc804\uc1a1\ud55c \ub2e4\uc74c, \ubc1c\ud589 \uc0c1\ud0dc\ub97c \uc5c5\ub370\uc774\ud2b8\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc11c \uc911\uc694\ud55c \uc2e4\ud328 \uc0c1\ud669\uc774 \uc788\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Relay\uac00 \uc774\ubca4\ud2b8\ub97c \ube0c\ub85c\ucee4\uc5d0 \ubc1c\ud589\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ube0c\ub85c\ucee4\ub294 \uba54\uc2dc\uc9c0\ub97c \uc815\uc0c1\uc801\uc73c\ub85c \uc800\uc7a5\ud55c\ub2e4.<\/li>\n\n\n\n<li>Relay\uac00 \ubc1c\ud589 \uc644\ub8cc \uc0c1\ud0dc\ub97c \uae30\ub85d\ud558\uae30 \uc804\uc5d0 \uc885\ub8cc\ub41c\ub2e4.<\/li>\n\n\n\n<li>Relay\uac00 \uc7ac\uc2dc\uc791\ud55c \ub4a4 \uac19\uc740 \uc774\ubca4\ud2b8\ub97c \ub2e4\uc2dc \ubc1c\ud589\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c Outbox\ub294 \uc774\ubca4\ud2b8 \uc720\uc2e4 \uc704\ud5d8\uc744 \uc904\uc774\uc9c0\ub9cc \uc911\ubcf5 \ubc1c\ud589\uc744 \uc790\ub3d9\uc73c\ub85c \uc81c\uac70\ud558\uc9c0\ub294 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Outbox\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubcc0\uacbd\uacfc \uc774\ubca4\ud2b8 \uae30\ub85d\uc744 \uc6d0\uc790\uc801\uc73c\ub85c \ubcf4\uc7a5\ud558\ub294 \ud328\ud134\uc774\uc9c0, \ube0c\ub85c\ucee4 \ubc1c\ud589\uae4c\uc9c0 \uc815\ud655\ud788 \ud55c \ubc88\ub9cc \uc218\ud589\ud558\ub3c4\ub85d \ubcf4\uc7a5\ud558\ub294 \ud328\ud134\uc740 \uc544\ub2c8\ub2e4.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Outbox \uad6c\ud604 \ubc29\uc2dd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Polling \ubc29\uc2dd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc8fc\uae30\uc801\uc73c\ub85c \ubbf8\ubc1c\ud589 \uc774\ubca4\ud2b8\ub97c \uc870\ud68c\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uad6c\ud604\uc774 \ube44\uad50\uc801 \ub2e8\uc21c\ud558\ub2e4.<\/li>\n\n\n\n<li>\ud3f4\ub9c1 \uc8fc\uae30\ub9cc\ud07c \ubc1c\ud589 \uc9c0\uc5f0\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc870\ud68c \uc778\ub371\uc2a4\uc640 \uc5ec\ub7ec Relay \uac04 \uc791\uc5c5 \ubd84\ubc30\ub97c \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CDC(Change Data Capture) \ubc29\uc2dd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ubcc0\uacbd \ub85c\uadf8\ub97c \uc77d\uc5b4 Outbox \uc774\ubca4\ud2b8\ub97c \uc804\ub2ec\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ub300\uaddc\ubaa8 \uc774\ubca4\ud2b8 \uc804\ub2ec\uc5d0 \uc801\ud569\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>CDC \ub3c4\uad6c\uc640 \ucee4\ub125\ud130, \ub85c\uadf8 \ubcf4\uc874 \ub4f1 \ucd94\uac00 \uc778\ud504\ub77c\uac00 \ud544\uc694\ud558\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc791\uc740 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 Polling\uc73c\ub85c \uc2dc\uc791\ud558\uace0, \ucc98\ub9ac\ub7c9\uc774\ub098 \uc9c0\uc5f0 \uc694\uad6c \uc0ac\ud56d\uc774 \ucee4\uc9c0\uba74 CDC\ub97c \uac80\ud1a0\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2e4\ud328 \uc791\uc5c5 \uc7ac\ucc98\ub9ac<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7ac\uc2dc\ub3c4\uc640 \uc7ac\ucc98\ub9ac\uc758 \ucc28\uc774<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\uc2dc\ub3c4(Retry)\ub294 \uc791\uc5c5 \uc2e4\ud589 \uc911 \uc77c\uc2dc\uc801\uc778 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\uc744 \ub54c \uc790\ub3d9\uc73c\ub85c \ub2e4\uc2dc \uc2dc\ub3c4\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\ucc98\ub9ac(Reprocessing)\ub294 \uc2e4\ud328 \uc774\ub825\uc774\ub098 \uc800\uc7a5\ub41c \uc774\ubca4\ud2b8\ub97c \uc774\uc6a9\ud574 \ub098\uc911\uc5d0 \uc791\uc5c5\uc744 \ub2e4\uc2dc \uc218\ud589\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5f0\uacb0\uc774 \uc77c\uc2dc\uc801\uc73c\ub85c \ub04a\uacbc\uc744 \ub54c\ub294 \uc7ac\uc2dc\ub3c4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. \ubc18\uba74 \uc18c\ube44\uc790 \ucf54\ub4dc\uc758 \ubc84\uadf8\ub97c \uc218\uc815\ud55c \ub4a4 DLQ\uc5d0 \uc313\uc778 \uba54\uc2dc\uc9c0\ub97c \ub2e4\uc2dc \ucc98\ub9ac\ud558\uac70\ub098, \ub204\ub77d\ub41c \ub370\uc774\ud130\ub97c \ubcf5\uad6c\ud558\ub294 \uacbd\uc6b0\uc5d0\ub294 \uc7ac\ucc98\ub9ac\uac00 \uc801\ud569\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7ac\ucc98\ub9ac \uc124\uacc4 \uc6d0\uce59<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2e4\ud328 \uc6d0\uc778 \ud655\uc778<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\ucc98\ub9ac\ud558\uae30 \uc804\uc5d0 \uc2e4\ud328 \uc6d0\uc778\uc774 \ud574\uacb0\ub418\uc5c8\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc7ac\ucc98\ub9ac \ub300\uc0c1 \uc120\ubcc4<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc804\uccb4 \uba54\uc2dc\uc9c0\ub97c \ubb34\uc870\uac74 \uc7ac\ucc98\ub9ac\ud558\uc9c0 \uc54a\uace0 \uc2e4\ud328 \uc720\ud615, \ubc1c\uc0dd \uc2dc\uac01, \uc0ac\uc6a9\uc790, \uc774\ubca4\ud2b8 ID \ub4f1\uc744 \uae30\uc900\uc73c\ub85c \ub300\uc0c1\uc744 \uc120\ud0dd\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ucc98\ub9ac \uc18d\ub3c4 \uc81c\ud55c<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ub7c9\uc758 \uba54\uc2dc\uc9c0\ub97c \ud55c \ubc88\uc5d0 \uc7ac\ucc98\ub9ac\ud558\uba74 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub098 \uc678\ubd80 \uc11c\ube44\uc2a4\uc5d0 \ubd80\ud558\uac00 \uc9d1\uc911\ub420 \uc218 \uc788\ub2e4. \ucc98\ub9ac\ub7c9 \uc81c\ud55c\uacfc \ubc30\uce58 \ud06c\uae30 \uc870\uc808\uc774 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc7ac\ucc98\ub9ac \uc774\ub825 \uad00\ub9ac<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub204\uac00 \uc5b8\uc81c \uc5b4\ub5a4 \uba54\uc2dc\uc9c0\ub97c \uc7ac\ucc98\ub9ac\ud588\ub294\uc9c0, \uacb0\uacfc\uac00 \uc131\uacf5\ud588\ub294\uc9c0 \uae30\ub85d\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc911\ubcf5 \uc2e4\ud589 \ubc29\uc9c0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ubbf8 \ubc18\uc601\ub41c \uc791\uc5c5\uc774 \ub2e4\uc2dc \uc2e4\ud589\ub418\ub354\ub77c\ub3c4 \ub370\uc774\ud130\uac00 \uc911\ubcf5 \ubcc0\uacbd\ub418\uc9c0 \uc54a\ub3c4\ub85d \uba71\ub4f1\uc131\uc744 \ud655\ubcf4\ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7ac\ucc98\ub9ac \uc0c1\ud0dc \ubaa8\ub378<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>PENDING\n   |\n   v\nPROCESSING\n   |\n   +---- \uc131\uacf5 ----&gt; COMPLETED\n   |\n   +---- \uc77c\uc2dc \uc624\ub958 ----&gt; RETRY_WAIT\n   |                       |\n   |                       v\n   |                   PROCESSING\n   |\n   +---- \uc7ac\uc2dc\ub3c4 \ucd08\uacfc ----&gt; DEAD<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\ub7ec \uc791\uc5c5\uc790\uac00 \ub3d9\uc2dc\uc5d0 \uac19\uc740 \uc791\uc5c5\uc744 \uac00\uc838\uac00\uc9c0 \uc54a\ub3c4\ub85d \uc6d0\uc790\uc801\uc778 \uc791\uc5c5 \uc120\uc810\uc774 \ud544\uc694\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c\ub294 \uc870\uac74\ubd80 UPDATE\ub098 \uc801\uc808\ud55c \ud589 \uc7a0\uae08\uc744 \ud65c\uc6a9\ud560 \uc218 \uc788\ub2e4. \uc5ec\ub7ec \uc11c\ubc84\uac00 \ud568\uaed8 \ucc98\ub9ac\ud55c\ub2e4\uba74 \uc791\uc5c5 \uc784\ub300(Lease), \uc7a0\uae08 \ub9cc\ub8cc, \uc791\uc5c5 \uc18c\uc720\uc790 \uc815\ubcf4\ub3c4 \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc791\uc5c5\uc790\uac00 <code>PROCESSING<\/code> \uc0c1\ud0dc\uc5d0\uc11c \ube44\uc815\uc0c1 \uc885\ub8cc\ub418\ub294 \uc0c1\ud669\ub3c4 \ucc98\ub9ac\ud574\uc57c \ud55c\ub2e4. \uc791\uc5c5 \uc784\ub300\uac00 \ub9cc\ub8cc\ub418\uba74 \ub2e4\ub978 \uc791\uc5c5\uc790\uac00 \ub2e4\uc2dc \uac00\uc838\uac08 \uc218 \uc788\ub3c4\ub85d \uc124\uacc4\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e8, \uc791\uc5c5\uc774 \uc2e4\uc81c\ub85c \uc644\ub8cc\ub410\ub294\uc9c0 \ubd88\ud655\uc2e4\ud55c \uc0c1\ud669\uc5d0\uc11c \ub2e4\uc2dc \uc2e4\ud589\ub420 \uc218 \uc788\uc73c\ubbc0\ub85c \uc791\uc5c5 \uc120\uc810\ub9cc\uc73c\ub85c \uc911\ubcf5 \uc2e4\ud589 \ubb38\uc81c\uac00 \ud574\uacb0\ub418\uc9c0\ub294 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc774\ubca4\ud2b8 \uc7ac\uc0dd\uacfc \uc0c1\ud0dc \ubcf5\uad6c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ubca4\ud2b8\ub97c \uc800\uc7a5\ud558\uace0 \uc788\ub2e4\uba74 \ud2b9\uc815 \uc2dc\uc810\ubd80\ud130 \uc774\ubca4\ud2b8\ub97c \ub2e4\uc2dc \uc18c\ube44\ud558\uc5ec \ud30c\uc0dd \ub370\uc774\ud130\ub97c \ubcf5\uad6c\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ub7ad\ud0b9 \ub370\uc774\ud130\uac00 \uc190\uc0c1\ub418\uc5c8\uc744 \ub54c \uc804\ud22c \uacb0\uacfc \uc774\ubca4\ud2b8\ub97c \uc7ac\uc0dd\ud558\uc5ec \ub7ad\ud0b9\uc744 \uc7ac\uad6c\uc131\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e8, \uc678\ubd80 API \ud638\ucd9c\uc774\ub098 \ubcf4\uc0c1 \uc9c0\uae09\ucc98\ub7fc \ubd80\uc218 \ud6a8\uacfc\uac00 \ubc1c\uc0dd\ud558\ub294 \uc774\ubca4\ud2b8\ub294 \uadf8\ub300\ub85c \uc7ac\uc0dd\ud558\uba74 \uc704\ud5d8\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \ub2e4\uc74c\uc744 \uad6c\ubd84\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud30c\uc0dd \ub370\uc774\ud130 \uc7ac\uad6c\uc131<\/li>\n\n\n\n<li>\uc2e4\uc81c \ube44\uc988\ub2c8\uc2a4 \uc791\uc5c5 \uc7ac\uc2e4\ud589<\/li>\n\n\n\n<li>\uc678\ubd80 \ubd80\uc218 \ud6a8\uacfc \ubc1c\uc0dd<\/li>\n\n\n\n<li>\uc774\ubbf8 \ucc98\ub9ac\ub41c \uc774\ubca4\ud2b8\uc758 \uc911\ubcf5 \uc5ec\ubd80<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ubca4\ud2b8 \uc7ac\uc0dd\uc740 \ub370\uc774\ud130 \ubcf5\uad6c\ubfd0 \uc544\ub2c8\ub77c \ub370\uc774\ud130 \uac80\uc99d\uacfc \uc7a5\uc560 \ub300\uc751\uc5d0\ub3c4 \ud65c\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uba71\ub4f1 \uc18c\ube44\uc790 \uc124\uacc4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uba71\ub4f1\uc131\uc758 \uc758\ubbf8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba71\ub4f1\uc131(Idempotency)\uc740 \ub3d9\uc77c\ud55c \uc791\uc5c5\uc744 \uc5ec\ub7ec \ubc88 \uc218\ud589\ud574\ub3c4 \ucd5c\uc885 \uacb0\uacfc\uac00 \ud55c \ubc88 \uc218\ud589\ud55c \uac83\uacfc \ub3d9\uc77c\ud558\ub3c4\ub85d \ub9cc\ub4dc\ub294 \uc131\uc9c8\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \uc7ac\uc2dc\ub3c4, \uc7ac\uc5f0\uacb0, ACK \uc190\uc2e4 \ub4f1\uc758 \uc774\uc720\ub85c \uac19\uc740 \uba54\uc2dc\uc9c0\uac00 \uc5ec\ub7ec \ubc88 \uc804\ub2ec\ub420 \uc218 \uc788\ub2e4. \ub530\ub77c\uc11c \uc18c\ube44\uc790\ub294 \uc911\ubcf5 \uba54\uc2dc\uc9c0 \uc804\ub2ec\uc744 \uc815\uc0c1\uc801\uc778 \uc0c1\ud669\uc73c\ub85c \uac00\uc815\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ub2e4\uc74c \ucf54\ub4dc\ub97c \uc0b4\ud3b4\ubcf4\uc790.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>async function grantReward(playerId, amount) {\n  await database.query(\n    `UPDATE players\n     SET points = points + ?\n     WHERE id = ?`,\n    &#91;amount, playerId]\n  );\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uac19\uc740 \ubcf4\uc0c1 \uba54\uc2dc\uc9c0\uac00 \uc911\ubcf5 \uc804\ub2ec\ub418\uba74 \ud3ec\uc778\ud2b8\uac00 \uc911\ubcf5\uc73c\ub85c \uc99d\uac00\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0\uac00 \ud55c \ubc88\ub9cc \uc804\ub2ec\ub420 \uac83\uc774\ub77c\uace0 \uae30\ub300\ud558\ub294 \ub300\uc2e0, \uc18c\ube44\uc790 \uce21\uc5d0\uc11c \uc911\ubcf5 \ucc98\ub9ac\ub97c \ubc29\uc9c0\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uba54\uc2dc\uc9c0 ID \uae30\ubc18 \uc911\ubcf5 \ubc29\uc9c0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\ubc18\uc801\uc778 \ubc29\ubc95\uc740 \uba54\uc2dc\uc9c0\ubcc4 \uace0\uc720 ID\ub97c \uc0ac\uc6a9\ud558\uace0, \ucc98\ub9ac\ud55c \uba54\uc2dc\uc9c0 ID\ub97c \uc800\uc7a5\ud558\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE processed_messages (\n    consumer_name VARCHAR(100) NOT NULL,\n    message_id VARCHAR(100) NOT NULL,\n    processed_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,\n    PRIMARY KEY (consumer_name, message_id)\n);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf5\ud569 \uae30\ubcf8\ud0a4\ub97c \uc774\uc6a9\ud558\uba74 \ub3d9\uc77c\ud55c \uc18c\ube44\uc790\uac00 \uac19\uc740 \uba54\uc2dc\uc9c0\ub97c \uc911\ubcf5 \ub4f1\ub85d\ud558\ub294 \uac83\uc744 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \ucc28\ub2e8\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e8\uc21c\ud788 \uba54\uc2dc\uc9c0 ID\ub97c \ud655\uc778\ud55c \ub4a4 \uc2e4\uc81c \uc791\uc5c5\uc744 \uc2e4\ud589\ud558\uace0 \ub098\uc911\uc5d0 \ucc98\ub9ac \uc644\ub8cc\ub97c \uae30\ub85d\ud558\uba74 \uacbd\uc7c1 \uc870\uac74\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \uc911\ubcf5 \ud655\uc778, \ube44\uc988\ub2c8\uc2a4 \ubcc0\uacbd, \ucc98\ub9ac \uc644\ub8cc \uae30\ub85d\uc744 \ub3d9\uc77c\ud55c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uc5d0 \ud3ec\ud568\ud558\ub294 \ubc29\uc2dd\uc774 \uc548\uc804\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud2b8\ub79c\uc7ad\uc158\uc744 \uc774\uc6a9\ud55c \uba71\ub4f1 \uc18c\ube44\uc790<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>async function consumeReward(message) {\n  await database.transaction(async tx =&gt; {\n    const inserted = await tx.processedMessages.insertIfAbsent({\n      consumerName: \"reward-consumer\",\n      messageId: message.id\n    });\n\n    if (!inserted) {\n      return;\n    }\n\n    await tx.players.incrementPoints(\n      message.playerId,\n      message.amount\n    );\n  });\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc11c <code>insertIfAbsent<\/code>\ub294 \uc0ac\uc6a9\ud558\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640 ORM\uc5d0 \ub9de\uac8c \uad6c\ud604\ud574\uc57c \ud55c\ub2e4. \ud575\uc2ec\uc740 \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74\uc744 \uc774\uc6a9\ud574 \ucd5c\ucd08 \ucc98\ub9ac \uc5ec\ubd80\ub97c \uc6d0\uc790\uc801\uc73c\ub85c \uacb0\uc815\ud558\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc98\ub9ac \uae30\ub85d \uc0bd\uc785\uacfc \ud3ec\uc778\ud2b8 \uc9c0\uae09\uc774 \uac19\uc740 \ud2b8\ub79c\uc7ad\uc158\uc5d0 \ud3ec\ud568\ub418\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \ub3d9\uc791\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ucd5c\ucd08 \uba54\uc2dc\uc9c0: \ucc98\ub9ac \uae30\ub85d\uacfc \ubcf4\uc0c1 \uc9c0\uae09\uc774 \ud568\uaed8 \ucee4\ubc0b\ub41c\ub2e4.<\/li>\n\n\n\n<li>\uc911\ubcf5 \uba54\uc2dc\uc9c0: \uc774\ubbf8 \ucc98\ub9ac\ud55c ID\uc774\ubbc0\ub85c \ubcf4\uc0c1 \uc9c0\uae09\uc744 \uc0dd\ub7b5\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucc98\ub9ac \ub3c4\uc911 \uc624\ub958: \ud2b8\ub79c\uc7ad\uc158\uc774 \ub864\ubc31\ub418\uba74 \ucc98\ub9ac \uae30\ub85d\uacfc \ubcf4\uc0c1 \uc9c0\uae09 \ubaa8\ub450 \ucde8\uc18c\ub41c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \uad6c\ud604\uc5d0\uc11c\ub294 \uc911\ubcf5 \ud0a4 \ucda9\ub3cc\uc744 \uc77c\ubc18 \uc624\ub958\uc640 \uad6c\ubd84\ud558\uace0 \ud2b8\ub79c\uc7ad\uc158\uc744 \uc548\uc804\ud558\uac8c \uc885\ub8cc\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub610\ud55c \uc18c\ube44\uc790\ub294 \ube44\uc988\ub2c8\uc2a4 \ucc98\ub9ac\uac00 \ucee4\ubc0b\ub41c \ud6c4 \uba54\uc2dc\uc9c0\ub97c ACK\ud558\ub294 \uac83\uc774 \uc77c\ubc18\uc801\uc774\ub2e4. \ucee4\ubc0b \uc804\uc5d0 ACK\ud558\uba74 \uc774\ud6c4 \uc7a5\uc560\uac00 \ubc1c\uc0dd\ud588\uc744 \ub54c \uba54\uc2dc\uc9c0\uac00 \uc720\uc2e4\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc678\ubd80 \uc2dc\uc2a4\ud15c \ud638\ucd9c\uacfc \uba71\ub4f1\uc131<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \uc678\ubd80 API \ud638\ucd9c\uae4c\uc9c0 \uc6d0\uc790\uc801\uc73c\ub85c \ubb36\uc744 \uc218\ub294 \uc5c6\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \uacb0\uc81c \uc694\uccad\uc774 \uc678\ubd80 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc131\uacf5\ud588\uc9c0\ub9cc \uc751\ub2f5\uc744 \ubc1b\uc9c0 \ubabb\ud560 \uc218 \uc788\ub2e4. \uc774\ub54c \ub2e8\uc21c \uc7ac\uc2dc\ub3c4\ud558\uba74 \uc911\ubcf5 \uacb0\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\uc751 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc678\ubd80 API\uac00 \uc9c0\uc6d0\ud55c\ub2e4\uba74 \ub3d9\uc77c\ud55c Idempotency-Key \uc0ac\uc6a9<\/li>\n\n\n\n<li>\uc694\uccad ID\uc640 \uacb0\uacfc \uae30\ub85d\uc744 \uc601\uc18d\uc801\uc73c\ub85c \uc800\uc7a5<\/li>\n\n\n\n<li>\uc678\ubd80 \uc2dc\uc2a4\ud15c\uc758 \ucc98\ub9ac \uc0c1\ud0dc \uc870\ud68c<\/li>\n\n\n\n<li>Transactional Outbox\ub85c \uc678\ubd80 \uc694\uccad \uc804\ub2ec<\/li>\n\n\n\n<li>\ubcf4\uc0c1 \ud2b8\ub79c\uc7ad\uc158\uc774\ub098 \uc218\ub3d9 \ubcf5\uad6c \uc808\ucc28 \uc900\ube44<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uba71\ub4f1\uc131\uc740 \uba54\uc2dc\uc9c0 ID\ub97c \uae30\ub85d\ud558\ub294 \uac83\ub9cc\uc73c\ub85c \uc644\uc131\ub418\uc9c0 \uc54a\ub294\ub2e4. \uc2e4\uc81c \ube44\uc988\ub2c8\uc2a4 \ud6a8\uacfc\uac00 \uc911\ubcf5 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\ub294\uc9c0\uae4c\uc9c0 \ud655\uc778\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uba71\ub4f1\uc131 \ud0a4\uc758 \ubcf4\uc874 \uae30\uac04<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc98\ub9ac\ud55c \uba54\uc2dc\uc9c0 ID\ub97c \uc601\uad6c \ubcf4\uad00\ud558\uba74 \uc800\uc7a5 \uacf5\uac04\uc774 \uacc4\uc18d \uc99d\uac00\ud55c\ub2e4. \ubc18\ub300\ub85c \ub108\ubb34 \ube68\ub9ac \uc0ad\uc81c\ud558\uba74 \uc624\ub798\ub41c \uba54\uc2dc\uc9c0\uac00 \uc7ac\uc804\ub2ec\ub418\uc5c8\uc744 \ub54c \uc911\ubcf5 \ucc98\ub9ac\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf4\uc874 \uae30\uac04\uc740 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uc758 \ubcf4\uc874 \uae30\uac04, \ucd5c\ub300 \uc7ac\uc2dc\ub3c4 \uae30\uac04, DLQ \ubcf4\uad00 \ubc0f \uc7ac\ucc98\ub9ac \uae30\uac04, \uc774\ubca4\ud2b8 \uc7ac\uc0dd \uac00\ub2a5 \uae30\uac04, \ube44\uc988\ub2c8\uc2a4 \ub370\uc774\ud130\uc758 \uc911\ubcf5 \ucc98\ub9ac \uc704\ud5d8\uc744 \uae30\uc900\uc73c\ub85c \uacb0\uc815\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud3ec\uc778\ud2b8 \uc9c0\uae09\uc774\ub098 \uacb0\uc81c\ucc98\ub7fc \uc911\ubcf5 \uc2e4\ud589\uc758 \uc601\ud5a5\uc774 \ud070 \uc791\uc5c5\uc740 \uc9e7\uc740 TTL\uc5d0\ub9cc \uc758\uc874\ud558\uae30\ubcf4\ub2e4 \ube44\uc988\ub2c8\uc2a4 \uace0\uc720 ID\uc640 \uc601\uad6c\uc801\uc778 \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74\uc744 \ud65c\uc6a9\ud558\ub294 \uac83\uc774 \uc801\uc808\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc804\uccb4 \ubcf5\uad6c \uc544\ud0a4\ud14d\ucc98<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc55e\uc5d0\uc11c \uc0b4\ud3b4\ubcf8 \uae30\ubc95\ub4e4\uc740 \uc11c\ub85c \ub300\uccb4 \uad00\uacc4\uac00 \uc544\ub2c8\ub2e4. \uac01\uc790 \ub2e4\ub978 \uc2e4\ud328 \uc9c0\uc810\uc744 \ud574\uacb0\ud558\uba70 \ud568\uaed8 \uc0ac\uc6a9\ud560 \ub54c \ubcf5\uad6c \uc548\uc815\uc131\uc774 \ub192\uc544\uc9c4\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;Business Request]\n        |\n        v\n&#91;Database Transaction]\n  - \ube44\uc988\ub2c8\uc2a4 \ub370\uc774\ud130 \ubcc0\uacbd\n  - Outbox \uc774\ubca4\ud2b8 \uae30\ub85d\n        |\n        v\n&#91;Outbox Relay]\n  - \uc7ac\uc2dc\ub3c4\n  - \ubc1c\ud589 \uc0c1\ud0dc \uad00\ub9ac\n        |\n        v\n&#91;Message Broker]\n        |\n        v\n&#91;Consumer]\n  - \uba54\uc2dc\uc9c0 \uac80\uc99d\n  - \uba71\ub4f1\uc131 \ud655\uc778\n  - \ube44\uc988\ub2c8\uc2a4 \ud2b8\ub79c\uc7ad\uc158\n        |\n        +---- \uc131\uacf5 ----&gt; ACK\n        |\n        +---- \uc77c\uc2dc \uc624\ub958 ----&gt; \uc9c0\uc218 \ubc31\uc624\ud504 \uc7ac\uc2dc\ub3c4\n        |\n        +---- \ubc18\ubcf5 \uc2e4\ud328 ----&gt; DLQ\n                                   |\n                                   v\n                           \uc6d0\uc778 \ubd84\uc11d \ubc0f \uc218\uc815\n                                   |\n                                   v\n                                 \uc7ac\ucc98\ub9ac<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uac01 \uae30\ubc95\uc758 \uc5ed\ud560\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uae30\ubc95<\/th><th>\ud574\uacb0\ud558\ub824\ub294 \ubb38\uc81c<\/th><\/tr><tr><td>\uc7ac\uc2dc\ub3c4<\/td><td>\uc77c\uc2dc\uc801\uc778 \uc624\ub958\ub85c \uc2e4\ud328\ud55c \uc791\uc5c5 \ubcf5\uad6c<\/td><\/tr><tr><td>\uc9c0\uc218 \ubc31\uc624\ud504\uc640 Jitter<\/td><td>\uc7ac\uc2dc\ub3c4\ub85c \uc778\ud55c \uacfc\ubd80\ud558 \uc644\ud654<\/td><\/tr><tr><td>DLQ<\/td><td>\ubc18\ubcf5 \uc2e4\ud328 \uba54\uc2dc\uc9c0 \uaca9\ub9ac<\/td><\/tr><tr><td>Transactional Outbox<\/td><td>DB \ubcc0\uacbd\uacfc \uc774\ubca4\ud2b8 \ubc1c\ud589 \uc758\ub3c4 \uc0ac\uc774\uc758 \ubd88\uc77c\uce58 \ubc29\uc9c0<\/td><\/tr><tr><td>\uc2e4\ud328 \uc791\uc5c5 \uc7ac\ucc98\ub9ac<\/td><td>\ubcf5\uad6c \uac00\ub2a5\ud55c \uc791\uc5c5\uc744 \ub2e4\uc2dc \uc2e4\ud589<\/td><\/tr><tr><td>\uba71\ub4f1 \uc18c\ube44\uc790<\/td><td>\uc911\ubcf5 \uc804\ub2ec\ub85c \uc778\ud55c \uc911\ubcf5 \ube44\uc988\ub2c8\uc2a4 \ud6a8\uacfc \ubc29\uc9c0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc5d0 \uad00\uce21 \uac00\ub2a5\uc131(Observability)\uc744 \ucd94\uac00\ud574\uc57c \ud55c\ub2e4. \uc7ac\uc2dc\ub3c4 \ud69f\uc218, \ud050 \uc801\uccb4\ub7c9, DLQ \uc720\uc785\ub960, Outbox \ub300\uae30 \uc2dc\uac04, \uc18c\ube44\uc790 \ucc98\ub9ac \uc9c0\uc5f0, \uc911\ubcf5 \uba54\uc2dc\uc9c0 \ube44\uc728\uc744 \uce21\uc815\ud574\uc57c \uc2e4\uc81c \uc7a5\uc560\ub97c \ube60\ub974\uac8c \ud30c\uc545\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2e4\ubb34 \uc801\uc6a9 \uccb4\ud06c\ub9ac\uc2a4\ud2b8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7ac\uc2dc\ub3c4<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc7ac\uc2dc\ub3c4 \uac00\ub2a5\ud55c \uc624\ub958\uc640 \ubd88\uac00\ub2a5\ud55c \uc624\ub958\ub97c \uad6c\ubd84\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucd5c\ub300 \uc7ac\uc2dc\ub3c4 \ud69f\uc218\uc640 \uc804\uccb4 \uc2e4\ud589 \uc2dc\uac04 \uc81c\ud55c\uc744 \uc124\uc815\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc9c0\uc218 \ubc31\uc624\ud504\uc640 Jitter\ub97c \uc801\uc6a9\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc911\ucca9\ub41c \uc7ac\uc2dc\ub3c4\ub85c \uc694\uccad \uc218\uac00 \ud3ed\uc99d\ud558\uc9c0 \uc54a\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">DLQ<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uba54\uc2dc\uc9c0 ID\uc640 \uc2e4\ud328 \uc6d0\uc778\uc744 \uc800\uc7a5\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucd5c\ub300 \uc7ac\uc2dc\ub3c4 \ud69f\uc218 \ucd08\uacfc \uc2dc \uba54\uc2dc\uc9c0\ub97c \uaca9\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>DLQ \uc801\uccb4\ub7c9\uacfc \uc99d\uac00\uc728\uc5d0 \ub300\ud55c \uc54c\ub9bc\uc744 \uc124\uc815\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc6d0\uc778 \ud574\uacb0 \ud6c4 \uc911\ubcf5 \ucc98\ub9ac \uc704\ud5d8\uc744 \ud655\uc778\ud558\uace0 \uc7ac\ucc98\ub9ac\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Transactional Outbox<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ube44\uc988\ub2c8\uc2a4 \ub370\uc774\ud130 \ubcc0\uacbd\uacfc Outbox \uae30\ub85d\uc744 \ub3d9\uc77c\ud55c \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \ucc98\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>Outbox Relay\uc758 \uc7ac\uc2dc\uc791\uacfc \uc911\ubcf5 \ubc1c\ud589\uc744 \uace0\ub824\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ubc1c\ud589 \uc0c1\ud0dc\uc640 \uc7ac\uc2dc\ub3c4 \uc774\ub825\uc744 \uad00\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>Outbox \ud14c\uc774\ube14\uc758 \uc778\ub371\uc2a4, \ubcf4\uc874 \uae30\uac04, \uc815\ub9ac \uc815\ucc45\uc744 \uc124\uacc4\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\uc2e4\ud328 \uc791\uc5c5 \uc7ac\ucc98\ub9ac<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc2e4\ud328 \uc6d0\uc778\uacfc \uc7ac\ucc98\ub9ac \ub300\uc0c1\uc744 \uc2dd\ubcc4\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc7ac\ucc98\ub9ac \uc774\ub825\uc744 \uae30\ub85d\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc791\uc5c5 \uc120\uc810\uacfc \uc791\uc5c5\uc790 \uc7a5\uc560 \ubcf5\uad6c\ub97c \uc124\uacc4\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ub300\ub7c9 \uc7ac\ucc98\ub9ac \uc2dc \ucc98\ub9ac\ub7c9\uc744 \uc81c\ud55c\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\uba71\ub4f1 \uc18c\ube44\uc790<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubaa8\ub4e0 \uba54\uc2dc\uc9c0\uc5d0 \uc548\uc815\uc801\uc778 \uace0\uc720 ID\uac00 \uc874\uc7ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74\uc73c\ub85c \uc911\ubcf5 \ucc98\ub9ac\ub97c \ubc29\uc9c0\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucc98\ub9ac \uae30\ub85d\uacfc \ube44\uc988\ub2c8\uc2a4 \ubcc0\uacbd\uc744 \ub3d9\uc77c\ud55c \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \ucc98\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>ACK \uc2dc\uc810\uacfc \ud2b8\ub79c\uc7ad\uc158 \ucee4\ubc0b \uc21c\uc11c\ub97c \uac80\uc99d\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc678\ubd80 \uc2dc\uc2a4\ud15c \ud638\ucd9c\uc758 \uc911\ubcf5 \uc2e4\ud589 \uac00\ub2a5\uc131\uc744 \ud655\uc778\ud55c\ub2e4.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ubd84\uc0b0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc624\ub958\ub294 \uc608\uc678\uc801\uc778 \uc0c1\ud669\uc774 \uc544\ub2c8\ub2e4. \ub124\ud2b8\uc6cc\ud06c \ub2e8\uc808, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud0c0\uc784\uc544\uc6c3, \uc11c\ubc84 \uc7ac\uc2dc\uc791, \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4 \uc7a5\uc560 \ub4f1 \ub2e4\uc591\ud55c \uc6d0\uc778\uc73c\ub85c \uc791\uc5c5\uc774 \uc2e4\ud328\ud560 \uc218 \uc788\ub2e4. \uc911\uc694\ud55c \uac83\uc740 \uc624\ub958\ub97c \uc644\uc804\ud788 \uc5c6\uc560\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, \uc2e4\ud328\ud55c \uc791\uc5c5\uc744 \uc548\uc804\ud558\uac8c \ubcf5\uad6c\ud558\uace0 \uc911\ubcf5 \uc2e4\ud589\uacfc \ub370\uc774\ud130 \ubd88\uc77c\uce58\ub97c \ubc29\uc9c0\ud558\ub294 \uac83\uc774\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c \ud50c\ub808\uc774\uc5b4\uac00 \ubcf4\uc2a4\ub97c \ucc98\uce58\ud558\uba74 \uc804\ud22c \uacb0\uacfc \uc800\uc7a5, \ubcf4\uc0c1 \uc9c0\uae09, \uc5c5\uc801 \uac31\uc2e0, \ub7ad\ud0b9 \uc5c5\ub370\uc774\ud2b8, [&hellip;]<\/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-2699","post","type-post","status-publish","format-standard","hentry","category-dev-logs"],"_links":{"self":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2699"}],"version-history":[{"count":1,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2699\/revisions"}],"predecessor-version":[{"id":2700,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2699\/revisions\/2700"}],"wp:attachment":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}