{"id":2695,"date":"2026-10-24T09:22:44","date_gmt":"2026-10-24T09:22:44","guid":{"rendered":"https:\/\/wayhope.kro.kr\/?p=2695"},"modified":"2026-10-24T09:22:44","modified_gmt":"2026-10-24T09:22:44","slug":"%eb%a9%94%ec%8b%9c%ec%a7%80-%ec%a0%84%eb%8b%ac-%eb%b3%b4%ec%9e%a5-at-most-once-at-least-once-exactly-once%ec%99%80-%ec%88%9c%ec%84%9c-%eb%b3%b4%ec%9e%a5","status":"publish","type":"post","link":"https:\/\/wayhope.kro.kr\/?p=2695","title":{"rendered":"\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5 #At-most-once, At-least-once, Exactly-once\uc640 \uc21c\uc11c \ubcf4\uc7a5"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5\uc774\ub780?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5(Message Delivery Guarantees)\uc740 \ubd84\uc0b0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uba54\uc2dc\uc9c0\uac00 \uc0dd\uc0b0\uc790(Producer)\ub85c\ubd80\ud130 \uc18c\ube44\uc790(Consumer)\uc5d0\uac8c \uc804\ub2ec\ub418\uace0 \ucc98\ub9ac\ub418\ub294 \uacfc\uc815\uc5d0\uc11c \ubc1c\uc0dd\ud560 \uc218 \uc788\ub294 \uc720\uc2e4, \uc911\ubcf5, \uc21c\uc11c \ubcc0\uacbd \ub4f1\uc758 \ubb38\uc81c\ub97c \uc5b4\ub5bb\uac8c \ub2e4\ub8f0 \uac83\uc778\uc9c0 \uc815\uc758\ud558\ub294 \uac1c\ub150\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\ub97c \uc0ac\uc6a9\ud558\ub294 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \uba54\uc2dc\uc9c0\ub97c \uc804\uc1a1\ud588\ub2e4\uace0 \ud574\uc11c \ubc18\ub4dc\uc2dc \ud55c \ubc88\ub9cc \ucc98\ub9ac\ub418\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4. \ub124\ud2b8\uc6cc\ud06c \ub2e8\uc808, \uc11c\ubc84 \uc7a5\uc560, \ud0c0\uc784\uc544\uc6c3, \uc18c\ube44\uc790 \uc7ac\uc2dc\uc791, ACK(Acknowledgment) \uc720\uc2e4 \ub4f1\uc758 \uc0c1\ud669\uc73c\ub85c \uc778\ud574 \uba54\uc2dc\uc9c0 \ucc98\ub9ac \uc5ec\ubd80\ub97c \ud310\ub2e8\ud558\uae30 \uc5b4\ub824\uc6b8 \uc218 \uc788\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\uc5d0\uac8c \ud3ec\uc778\ud2b8\ub97c \uc9c0\uae09\ud558\ub294 \uba54\uc2dc\uc9c0\ub97c \ucc98\ub9ac\ud55c\ub2e4\uace0 \uac00\uc815\ud558\uc790.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc18c\ube44\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \uc218\uc2e0\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \ud3ec\uc778\ud2b8\ub97c \uc9c0\uae09\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucc98\ub9ac \uc644\ub8cc ACK\ub97c \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uc5d0 \uc804\ub2ec\ud55c\ub2e4.<\/li>\n\n\n\n<li>ACK\uac00 \uc720\uc2e4\ub41c\ub2e4.<\/li>\n\n\n\n<li>\ube0c\ub85c\ucee4\ub294 \uba54\uc2dc\uc9c0\uac00 \ucc98\ub9ac\ub418\uc9c0 \uc54a\uc558\ub2e4\uace0 \ud310\ub2e8\ud558\uace0 \ub2e4\uc2dc \uc804\ub2ec\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18c\ube44\uc790\uac00 \uc911\ubcf5 \ucc98\ub9ac\ub97c \ubc29\uc9c0\ud558\uc9c0 \uc54a\uc73c\uba74 \ud50c\ub808\uc774\uc5b4\uc5d0\uac8c \ub3d9\uc77c\ud55c \ubcf4\uc0c1\uc774 \uc5ec\ub7ec \ubc88 \uc9c0\uae09\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5\uc740 \ub2e8\uc21c\ud788 \uba54\uc2dc\uc9c0\ub97c \uc804\uc1a1\ud558\ub294 \uae30\uc220\uc774 \uc544\ub2c8\ub2e4. \uc7a5\uc560\uac00 \ubc1c\uc0dd\ud558\ub354\ub77c\ub3c4 \ub370\uc774\ud130\uc758 \uc815\ud569\uc131\uacfc \ube44\uc988\ub2c8\uc2a4 \uaddc\uce59\uc744 \uc720\uc9c0\ud558\uae30 \uc704\ud55c \uc124\uacc4 \ubb38\uc81c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ud45c\uc801\uc778 \uc804\ub2ec \ubcf4\uc7a5 \ubc29\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>At-most-once:<\/strong> \ucd5c\ub300 \ud55c \ubc88 \uc804\ub2ec\ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>At-least-once:<\/strong> \ucd5c\uc18c \ud55c \ubc88 \uc804\ub2ec\uc744 \uc2dc\ub3c4\ud558\uba70, \uc911\ubcf5\ub420 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li><strong>Exactly-once:<\/strong> \uc815\uc758\ub41c \ucc98\ub9ac \ubc94\uc704\uc5d0\uc11c \ud6a8\uacfc\uac00 \uc815\ud655\ud788 \ud55c \ubc88 \ubc1c\uc0dd\ud558\ub3c4\ub85d \ubcf4\uc7a5\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">At-most-once<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At-most-once\ub294 \uba54\uc2dc\uc9c0\ub97c \ucd5c\ub300 \ud55c \ubc88\ub9cc \uc804\ub2ec\ud558\uac70\ub098 \ucc98\ub9ac\ud558\ub3c4\ub85d \ud558\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0\uac00 \uc720\uc2e4\ub418\ub354\ub77c\ub3c4 \uc7ac\uc804\uc1a1\ud558\uc9c0 \uc54a\ub294\ub2e4. \uc911\ubcf5 \uac00\ub2a5\uc131\uc744 \uc904\uc774\ub294 \ub300\uc2e0 \uc804\ub2ec \uc2e4\ud328 \uac00\ub2a5\uc131\uc744 \ud5c8\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ub3d9\uc791 \ubc29\uc2dd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0\ub97c \uc7ac\uc804\uc1a1\ud558\uc9c0 \uc54a\uac70\ub098, \ucc98\ub9ac \uc131\uacf5 \uc5ec\ubd80\ub97c \ud655\uc778\ud558\uae30 \uc804\uc5d0 \uba54\uc2dc\uc9c0\ub97c \ub354 \uc774\uc0c1 \ubcf5\uad6c\ud560 \uc218 \uc5c6\ub3c4\ub85d \uc18c\ube44 \ucc98\ub9ac\ud558\ub294 \ubc29\uc2dd\uc73c\ub85c \uad6c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18c\ube44\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \ubc1b\uae30 \uc804\uc5d0 \uba54\uc2dc\uc9c0\uac00 \uc720\uc2e4\ub418\uac70\ub098, \uc18c\ube44\uc790\uac00 \ucc98\ub9ac \ub3c4\uc911 \uc885\ub8cc\ub418\ub354\ub77c\ub3c4 \uba54\uc2dc\uc9c0\ub97c \ub2e4\uc2dc \uc804\ub2ec\ud558\uc9c0 \uc54a\ub294 \uad6c\uc870\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7a5\uc810<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc911\ubcf5 \ucc98\ub9ac\uc5d0 \ub530\ub978 \ube44\uc6a9\uc774 \uc801\ub2e4.<\/li>\n\n\n\n<li>\uc7ac\uc804\uc1a1\uacfc \ubcf5\uad6c \ub85c\uc9c1\uc774 \ub2e8\uc21c\ud558\ub2e4.<\/li>\n\n\n\n<li>\uc9c0\uc5f0 \uc2dc\uac04\uc744 \ub0ae\ucd94\ub294 \ub370 \uc720\ub9ac\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc77c\ubd80 \uc774\ubca4\ud2b8\uc758 \uc720\uc2e4\uc744 \ud5c8\uc6a9\ud560 \uc218 \uc788\ub294 \uc2dc\uc2a4\ud15c\uc5d0 \uc801\ud569\ud558\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ub2e8\uc810<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uba54\uc2dc\uc9c0 \uc720\uc2e4\uc744 \ubcf5\uad6c\ud558\uae30 \uc5b4\ub835\ub2e4.<\/li>\n\n\n\n<li>\uc7a5\uc560 \ubc1c\uc0dd \uc2dc \uc77c\ubd80 \uc791\uc5c5\uc774 \uc601\uad6c\uc801\uc73c\ub85c \ub204\ub77d\ub420 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc911\uc694\ud55c \ube44\uc988\ub2c8\uc2a4 \ub370\uc774\ud130\uc758 \uc815\ud569\uc131\uc744 \uc720\uc9c0\ud558\uae30 \uc5b4\ub835\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud65c\uc6a9 \uc0ac\ub840<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uac8c\uc784 \ub0b4 \uc704\uce58 \ubc0f \ud68c\uc804 \uc0c1\ud0dc\uc758 \ube48\ubc88\ud55c \uac31\uc2e0<\/li>\n\n\n\n<li>\uc2e4\uc2dc\uac04 \uc13c\uc11c \ub370\uc774\ud130<\/li>\n\n\n\n<li>\uc77c\ubd80 \ud154\ub808\uba54\ud2b8\ub9ac \ubc0f \ub514\ubc84\uae45 \ub85c\uadf8<\/li>\n\n\n\n<li>\uc774\uc804 \uac12\uc774 \ucd5c\uc2e0 \uac12\uc73c\ub85c \ub300\uccb4\ub418\ub294 \uc0c1\ud0dc \uc5c5\ub370\uc774\ud2b8<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud50c\ub808\uc774\uc5b4\uc758 \uc704\uce58\uac00 \uc9c0\uc18d\uc801\uc73c\ub85c \uc804\uc1a1\ub418\ub294 \uc0c1\ud669\uc5d0\uc11c\ub294 \uacfc\uac70 \uc704\uce58 \uba54\uc2dc\uc9c0\uac00 \uc720\uc2e4\ub418\ub354\ub77c\ub3c4 \ub2e4\uc74c \uc704\uce58 \uba54\uc2dc\uc9c0\ub85c \uc0c1\ud0dc\ub97c \uac31\uc2e0\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\uba74 \uc544\uc774\ud15c \uad6c\ub9e4\ub098 \ud3ec\uc778\ud2b8 \uc9c0\uae09\ucc98\ub7fc \ubc18\ub4dc\uc2dc \ucc98\ub9ac\ub418\uc5b4\uc57c \ud558\ub294 \uc791\uc5c5\uc5d0\ub294 \uc801\ud569\ud558\uc9c0 \uc54a\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At-most-once\ub294 \uc2dc\uc2a4\ud15c \uc804\uccb4\uc5d0\uc11c \uba54\uc2dc\uc9c0 \uc720\uc2e4\uc774 \uc5c6\ub2e4\ub294 \uc758\ubbf8\uac00 \uc544\ub2c8\ub2e4. \uc911\ubcf5 \uc804\ub2ec\uc744 \ud53c\ud558\ub294 \ub300\uc2e0 \uc720\uc2e4\uc744 \ud5c8\uc6a9\ud558\ub294 \uc804\ub2ec \uc815\ucc45\uc774\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">At-least-once<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At-least-once\ub294 \uba54\uc2dc\uc9c0\uac00 \ucd5c\uc18c \ud55c \ubc88 \ucc98\ub9ac\ub418\ub3c4\ub85d \uc7ac\uc804\uc1a1\uacfc \ubcf5\uad6c\ub97c \ud65c\uc6a9\ud558\ub294 \ubc29\uc2dd\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18c\ube44\uc790\uc758 \ucc98\ub9ac \uc644\ub8cc\uac00 \ud655\uc778\ub418\uc9c0 \uc54a\uc73c\uba74 \uba54\uc2dc\uc9c0\ub97c \ub2e4\uc2dc \uc804\ub2ec\ud55c\ub2e4. \uba54\uc2dc\uc9c0 \uc720\uc2e4 \uac00\ub2a5\uc131\uc744 \uc904\uc77c \uc218 \uc788\uc9c0\ub9cc, \uc774\ubbf8 \ucc98\ub9ac\ud55c \uba54\uc2dc\uc9c0\uac00 \ub2e4\uc2dc \uc804\ub2ec\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ub3d9\uc791 \ubc29\uc2dd<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\ubc18\uc801\uc778 \ucc98\ub9ac \ud750\ub984\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc0dd\uc0b0\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \ube0c\ub85c\ucee4\uc5d0 \ubc1c\ud589\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ube0c\ub85c\ucee4\uac00 \uba54\uc2dc\uc9c0\ub97c \uc800\uc7a5\ud558\uac70\ub098 \uc804\ub2ec\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc18c\ube44\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \uc218\uc2e0\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc18c\ube44\uc790\uac00 \uc791\uc5c5\uc744 \ucc98\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucc98\ub9ac\uac00 \uc131\uacf5\ud558\uba74 ACK\ub97c \uc804\uc1a1\ud55c\ub2e4.<\/li>\n\n\n\n<li>ACK\uac00 \ud655\uc778\ub418\uc9c0 \uc54a\uc73c\uba74 \ube0c\ub85c\ucee4\uac00 \uba54\uc2dc\uc9c0\ub97c \uc7ac\uc804\ub2ec\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud575\uc2ec\uc740 \uba54\uc2dc\uc9c0 \ucc98\ub9ac \uc644\ub8cc\ub97c \ud655\uc778\ud560 \uc218 \uc5c6\uc744 \ub54c \uc7ac\uc2dc\ub3c4\ud55c\ub2e4\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ACK\uac00 \uc720\uc2e4\ub418\uba74 \uc2e4\uc81c \uc791\uc5c5\uc774 \uc131\uacf5\ud588\ub354\ub77c\ub3c4 \ube0c\ub85c\ucee4\ub294 \uc774\ub97c \uc54c \uc218 \uc5c6\ub2e4. \ub530\ub77c\uc11c \ub3d9\uc77c\ud55c \uba54\uc2dc\uc9c0\uac00 \ub2e4\uc2dc \uc804\ub2ec\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc7a5\uc810<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc77c\uc2dc\uc801\uc778 \uc7a5\uc560\uc5d0\uc11c \uba54\uc2dc\uc9c0\ub97c \ubcf5\uad6c\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc911\uc694\ud55c \uc791\uc5c5\uc758 \ub204\ub77d \uac00\ub2a5\uc131\uc744 \uc904\uc77c \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc18c\ube44\uc790\uac00 \uc7ac\uc2dc\uc791\ub418\ub354\ub77c\ub3c4 \ubbf8\uc644\ub8cc \uc791\uc5c5\uc744 \ub2e4\uc2dc \ucc98\ub9ac\ud560 \uc218 \uc788\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ub2e8\uc810<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub3d9\uc77c\ud55c \uba54\uc2dc\uc9c0\uac00 \uc5ec\ub7ec \ubc88 \uc804\ub2ec\ub420 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc911\ubcf5 \ucc98\ub9ac \ubc29\uc9c0 \ub85c\uc9c1\uc774 \ud544\uc694\ud558\ub2e4.<\/li>\n\n\n\n<li>\uc7ac\uc2dc\ub3c4 \ud3ed\uc8fc\ub098 \uc7a5\uc560 \ubcf5\uad6c \uacfc\uc815\uc5d0\uc11c \ubd80\ud558\uac00 \uc99d\uac00\ud560 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li>\uc678\ubd80 \uc2dc\uc2a4\ud15c\uae4c\uc9c0 \ud3ec\ud568\ud558\uba74 \uc804\uccb4 \uc791\uc5c5\uc758 \uc131\uacf5 \uc5ec\ubd80\ub97c \ud310\ub2e8\ud558\uae30 \uc5b4\ub824\uc6b8 \uc218 \uc788\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud65c\uc6a9 \uc0ac\ub840<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uac8c\uc784 \ubcf4\uc0c1 \uc9c0\uae09<\/li>\n\n\n\n<li>\uacb0\uc81c \ubc0f \uc8fc\ubb38 \ucc98\ub9ac<\/li>\n\n\n\n<li>\uc774\uba54\uc77c\uacfc \uc54c\ub9bc \ubc1c\uc1a1<\/li>\n\n\n\n<li>\ube44\ub3d9\uae30 \ub370\uc774\ud130 \ucc98\ub9ac<\/li>\n\n\n\n<li>\ub370\uc774\ud130\ubca0\uc774\uc2a4 \ub3d9\uae30\ud654 \uc791\uc5c5<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7ec\ud55c \uc791\uc5c5\uc5d0\uc11c\ub294 \uba54\uc2dc\uc9c0\uc758 \uc7ac\uc804\ub2ec\uc744 \ud5c8\uc6a9\ud558\ub418, \ub3d9\uc77c\ud55c \ube44\uc988\ub2c8\uc2a4 \uc791\uc5c5\uc774 \uc5ec\ub7ec \ubc88 \uc2e4\ud589\ub418\uc9c0 \uc54a\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \uac83\uc774 \uc911\uc694\ud558\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Exactly-once \ucc98\ub9ac\uc758 \ud55c\uacc4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Exactly-once\ub294 \uba54\uc2dc\uc9c0 \ub610\ub294 \uc791\uc5c5\uc774 \uc815\ud655\ud788 \ud55c \ubc88 \ucc98\ub9ac\ub418\ub3c4\ub85d \ubcf4\uc7a5\ud558\ub294 \uac1c\ub150\uc774\ub2e4. \uadf8\ub7ec\ub098 \uc774\ub97c \uc2dc\uc2a4\ud15c \uc804\uccb4\uc5d0 \uc801\uc6a9\ud558\ub294 \uac83\uc740 \uc5b4\ub835\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uac00\uc7a5 \uba3c\uc800 \uad6c\ubd84\ud574\uc57c \ud560 \uac83\uc740 <strong>\uba54\uc2dc\uc9c0\uac00 \uc815\ud655\ud788 \ud55c \ubc88 \uc804\ub2ec\ub418\ub294 \uac83\uacfc \ube44\uc988\ub2c8\uc2a4 \ud6a8\uacfc\uac00 \uc815\ud655\ud788 \ud55c \ubc88 \ubc1c\uc0dd\ud558\ub294 \uac83\uc740 \uc11c\ub85c \ub2e4\ub978 \ubb38\uc81c<\/strong>\ub77c\ub294 \uc810\uc774\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uba54\uc2dc\uc9c0 \uc804\ub2ec\uacfc \uc2e4\uc81c \uc791\uc5c5\uc758 \ucc28\uc774<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uac00 \ub3d9\uc77c\ud55c \uba54\uc2dc\uc9c0\ub97c \ud55c \ubc88\ub9cc \uc804\ub2ec\ud558\ub3c4\ub85d \uad6c\uc131\ud588\ub2e4\uace0 \uac00\uc815\ud558\uc790.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc18c\ube44\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \ucc98\ub9ac\ud558\ub294 \ub3c4\uc911 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \ud3ec\uc778\ud2b8\ub97c \uc9c0\uae09\ud588\uc9c0\ub9cc, \ucc98\ub9ac \uacb0\uacfc\ub97c \uae30\ub85d\ud558\uae30 \uc804\uc5d0 \uc11c\ubc84\uac00 \uc885\ub8cc\ub418\uc5c8\ub2e4\uba74 \uc5b4\ub5bb\uac8c \ub420\uae4c?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc7ac\uc2dc\uc791 \ud6c4 \ube0c\ub85c\ucee4\uac00 \uba54\uc2dc\uc9c0\ub97c \uc7ac\uc804\ub2ec\ud558\uba74 \ud3ec\uc778\ud2b8\uac00 \uc911\ubcf5 \uc9c0\uae09\ub420 \uc218 \uc788\ub2e4. \ubc18\ub300\ub85c \uc7ac\uc804\ub2ec\uc744 \ub9c9\uc73c\uba74 \ud3ec\uc778\ud2b8 \uc9c0\uae09\uc774 \uc644\ub8cc\ub418\uc9c0 \uc54a\uc558\uc744 \uac00\ub2a5\uc131\uc774 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \ubb38\uc81c\ub294 \uba54\uc2dc\uc9c0 \uc804\ub2ec \ud69f\uc218\ub9cc \uc81c\uc5b4\ud574\uc11c \ud574\uacb0\ud560 \uc218 \uc5c6\ub2e4. \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4, \uc18c\ube44\uc790, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc0ac\uc774\uc5d0\uc11c \uc791\uc5c5\uc758 \ucc98\ub9ac \uc5ec\ubd80\uc640 \uc2e4\uc81c \ud6a8\uacfc\ub97c \uc77c\uad00\ub418\uac8c \uad00\ub9ac\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Exactly-once\uc758 \uc801\uc6a9 \ubc94\uc704<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Exactly-once\ub294 \ud2b9\uc815 \uc2dc\uc2a4\ud15c\uacfc \ucc98\ub9ac \ubc94\uc704 \uc548\uc5d0\uc11c \uad6c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\ubd80 \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\ub294 \uc790\uccb4 \ud2b8\ub79c\uc7ad\uc158\uacfc \uba54\uc2dc\uc9c0 \ucc98\ub9ac \uae30\ub2a5\uc744 \uacb0\ud569\ud558\uc5ec \uc911\ubcf5 \ucc98\ub9ac\ub098 \uc7ac\ucc98\ub9ac \ubb38\uc81c\ub97c \uc81c\ud55c\ud55c\ub2e4. \uadf8\ub7ec\ub098 \uadf8 \ubcf4\uc7a5\uc774 \uc678\ubd80 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ubcc0\uacbd\uc774\ub098 \uacb0\uc81c API \ud638\ucd9c\uae4c\uc9c0 \uc790\ub3d9\uc73c\ub85c \ud655\uc7a5\ub418\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c Exactly-once\ub97c \uac80\ud1a0\ud560 \ub54c\ub294 \ub2e4\uc74c \uc0ac\ud56d\uc744 \uba85\ud655\ud558\uac8c \uc815\uc758\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc5b4\ub290 \uad6c\uac04\uc5d0\uc11c \uc911\ubcf5\uc744 \ubc29\uc9c0\ud558\ub294\uac00?<\/li>\n\n\n\n<li>\uba54\uc2dc\uc9c0 \uc18c\ube44\uc640 \uacb0\uacfc \uc800\uc7a5\uc774 \ud558\ub098\uc758 \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \ubb36\uc774\ub294\uac00?<\/li>\n\n\n\n<li>\uc11c\ubc84 \uc7a5\uc560 \uc774\ud6c4\uc5d0\ub3c4 \ucc98\ub9ac \uacb0\uacfc\ub97c \ubcf5\uad6c\ud560 \uc218 \uc788\ub294\uac00?<\/li>\n\n\n\n<li>\uc678\ubd80 API \ud638\ucd9c\uae4c\uc9c0 \uc911\ubcf5 \ubc29\uc9c0\uac00 \uac00\ub2a5\ud55c\uac00?<\/li>\n\n\n\n<li>\ubcf4\uc7a5\ub418\uc9c0 \uc54a\ub294 \uc7a5\uc560 \uc0c1\ud669\uc740 \ubb34\uc5c7\uc778\uac00?<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\uc2e4\ubb34\uc801\uc778 \uc811\uadfc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub300\ubd80\ubd84\uc758 \ube44\uc988\ub2c8\uc2a4 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 At-least-once \uc804\ub2ec\uc744 \uc0ac\uc6a9\ud558\uace0, \uc18c\ube44\uc790 \uce21\uc5d0\uc11c \uba71\ub4f1\uc131(Idempotency)\uc744 \ubcf4\uc7a5\ud558\ub294 \ubc29\uc2dd\uc774 \uc2e4\uc6a9\uc801\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3d9\uc77c\ud55c \ubcf4\uc0c1 \uba54\uc2dc\uc9c0\uac00 \uc5ec\ub7ec \ubc88 \uc804\ub2ec\ub418\ub354\ub77c\ub3c4 \ud558\ub098\uc758 \ubcf4\uc0c1 ID\uc5d0 \ub300\ud574 \uc9c0\uae09\uc774 \ud55c \ubc88\ub9cc \ubc1c\uc0dd\ud558\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub97c \uc704\ud574 \ub2e4\uc74c \uae30\uc220\uc744 \ud65c\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uba54\uc2dc\uc9c0 \uace0\uc720 ID<\/li>\n\n\n\n<li>\uba71\ub4f1\uc131 \ud0a4(Idempotency Key)<\/li>\n\n\n\n<li>\ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74<\/li>\n\n\n\n<li>\ud2b8\ub79c\uc7ad\uc158\uc744 \ud1b5\ud55c \ucc98\ub9ac \uae30\ub85d\uacfc \ube44\uc988\ub2c8\uc2a4 \ub370\uc774\ud130\uc758 \uc6d0\uc790\uc801 \ubcc0\uacbd<\/li>\n\n\n\n<li>Outbox \ubc0f Inbox \ud328\ud134<\/li>\n\n\n\n<li>\uc7ac\uc2dc\ub3c4 \ubc0f \uc2e4\ud328 \uba54\uc2dc\uc9c0 \uad00\ub9ac<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Exactly-once\ub294 \ubaa8\ub4e0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ub2ec\uc131\ud574\uc57c \ud558\ub294 \uc808\ub300\uc801\uc778 \ubaa9\ud45c\uac00 \uc544\ub2c8\ub2e4. \uc5b4\ub5a4 \ubc94\uc704\uc5d0\uc11c \uc5b4\ub5a4 \ud6a8\uacfc\ub97c \uc815\ud655\ud788 \ud55c \ubc88\ub9cc \ubc1c\uc0dd\uc2dc\ucf1c\uc57c \ud558\ub294\uc9c0 \uc815\uc758\ud55c \ub4a4 \uad6c\ud604\ud574\uc57c \ud558\ub294 \ubcf4\uc7a5 \uc218\uc900\uc774\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uba54\uc2dc\uc9c0 \uc21c\uc11c \ubcf4\uc7a5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5\uacfc \uba54\uc2dc\uc9c0 \uc21c\uc11c \ubcf4\uc7a5\uc740 \ubcc4\uac1c\uc758 \ubb38\uc81c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ub4e0 \uba54\uc2dc\uc9c0\uac00 \uc720\uc2e4 \uc5c6\uc774 \uc804\ub2ec\ub418\ub354\ub77c\ub3c4 \uc18c\ube44\uc790\uac00 \ucc98\ub9ac\ud558\ub294 \uc21c\uc11c\ub294 \uc0dd\uc0b0\uc790\uac00 \ubc1c\ud589\ud55c \uc21c\uc11c\uc640 \ub2e4\ub97c \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc21c\uc11c\uac00 \ubcc0\uacbd\ub418\ub294 \uc6d0\uc778<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c\uacfc \uac19\uc740 \uba54\uc2dc\uc9c0\uac00 \uc21c\uc11c\ub300\ub85c \ubc1c\ud589\ub418\uc5c8\ub2e4\uace0 \uac00\uc815\ud558\uc790.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uba54\uc2dc\uc9c0 A: \ud50c\ub808\uc774\uc5b4 \ub808\ubca8\uc744 \ubcc0\uacbd\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uba54\uc2dc\uc9c0 B: \ud50c\ub808\uc774\uc5b4 \ub808\ubca8\uc744 \ub2e4\uc2dc \ubcc0\uacbd\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uba54\uc2dc\uc9c0 C: \ud50c\ub808\uc774\uc5b4 \ub808\ubca8\uc744 \ucd5c\uc885 \ubcc0\uacbd\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\ub7ec \uc18c\ube44\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \ubcd1\ub82c\ub85c \ucc98\ub9ac\ud558\uac70\ub098 \uc7ac\uc2dc\ub3c4 \uacfc\uc815\uc5d0\uc11c \uba54\uc2dc\uc9c0\uac00 \ub2e4\uc2dc \uc804\ub2ec\ub418\uba74 C\uac00 \uba3c\uc800 \uc644\ub8cc\ub418\uace0 A\uac00 \ub098\uc911\uc5d0 \uc644\ub8cc\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8 \uacb0\uacfc \ucd5c\uc2e0 \uc0c1\ud0dc\uac00 \uacfc\uac70 \uc0c1\ud0dc\ub85c \ub36e\uc5b4\uc368\uc9c8 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc21c\uc11c \ubcf4\uc7a5 \ubc29\ubc95<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ub2e8\uc77c \uc18c\ube44\uc790 \uc0ac\uc6a9<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud558\ub098\uc758 \uc18c\ube44\uc790\uac00 \uba54\uc2dc\uc9c0\ub97c \uc21c\ucc28\uc801\uc73c\ub85c \ucc98\ub9ac\ud558\uba74 \ub3d9\uc2dc \ucc98\ub9ac\ub85c \uc778\ud55c \uc21c\uc11c \ubcc0\uacbd\uc744 \uc904\uc77c \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub9cc \ucc98\ub9ac\ub7c9\uc774 \uc81c\ud55c\ub418\uace0, \uc7ac\uc2dc\ub3c4\ub098 \uc5ec\ub7ec \uc0dd\uc0b0\uc790\uac00 \uad00\uc5ec\ud558\ub294 \uc0c1\ud669\uc5d0\uc11c\ub294 \ubcc4\ub3c4\uc758 \uc21c\uc11c \uad00\ub9ac\uac00 \ud544\uc694\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud30c\ud2f0\uc158 \ud0a4 \uc0ac\uc6a9<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kafka\uc640 \uac19\uc740 \ud30c\ud2f0\uc158 \uae30\ubc18 \ube0c\ub85c\ucee4\uc5d0\uc11c\ub294 \ub3d9\uc77c\ud55c \ud0a4\ub97c \uac00\uc9c4 \uba54\uc2dc\uc9c0\ub97c \uac19\uc740 \ud30c\ud2f0\uc158\uc73c\ub85c \ubcf4\ub0b4\uace0, \ud30c\ud2f0\uc158 \ub0b4\ubd80\uc758 \uc21c\uc11c\ub97c \ud65c\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 <code>playerId<\/code>\ub97c \ud0a4\ub85c \uc0ac\uc6a9\ud558\uba74 \ub3d9\uc77c \ud50c\ub808\uc774\uc5b4\uc758 \uc774\ubca4\ud2b8\ub97c \uac19\uc740 \ud30c\ud2f0\uc158\uc5d0 \ubc30\uce58\ud558\uc5ec \uc21c\uc11c\ub97c \uad00\ub9ac\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e8, \uc5ec\ub7ec \ud30c\ud2f0\uc158\uc5d0 \uac78\uce5c \uc804\uccb4 \uc21c\uc11c\uac00 \uc790\ub3d9\uc73c\ub85c \ubcf4\uc7a5\ub418\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2dc\ud000\uc2a4 \ubc88\ud638 \uc0ac\uc6a9<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uac01 \uba54\uc2dc\uc9c0\uc5d0 \uc99d\uac00\ud558\ub294 \uc2dc\ud000\uc2a4 \ubc88\ud638\ub97c \ubd80\uc5ec\ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n  \"playerId\": \"player-abc\",\n  \"sequence\": \"seq-current\",\n  \"type\": \"PLAYER_LEVEL_CHANGED\",\n  \"level\": \"level-current\"\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \uad6c\ud604\uc5d0\uc11c\ub294 \uc2dc\ud000\uc2a4 \ubc88\ud638\uc640 \ub808\ubca8\uc744 \uc815\uc218\ub85c \uad00\ub9ac\ud55c\ub2e4. \uc18c\ube44\uc790\ub294 \ud604\uc7ac \ucc98\ub9ac\ud55c \uc2dc\ud000\uc2a4 \ubc88\ud638\uc640 \ube44\uad50\ud558\uc5ec \uc624\ub798\ub41c \uba54\uc2dc\uc9c0\ub97c \ubb34\uc2dc\ud558\uac70\ub098 \ub204\ub77d\ub41c \uba54\uc2dc\uc9c0\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ubc84\uc804 \uae30\ubc18 \uc0c1\ud0dc \uac31\uc2e0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \uc0c1\ud0dc \ubc84\uc804\uc744 \uae30\ub85d\ud558\uace0 \ub354 \ucd5c\uc2e0 \ubc84\uc804\uc758 \uba54\uc2dc\uc9c0\ub9cc \ubc18\uc601\ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>UPDATE player_state\nSET level = :new_level,\n    version = :new_version\nWHERE player_id = :player_id\n  AND version &lt; :new_version;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \ubc29\uc2dd\uc740 \uc624\ub798\ub41c \uc0c1\ud0dc\uac00 \ucd5c\uc2e0 \uc0c1\ud0dc\ub97c \ub36e\uc5b4\uc4f0\ub294 \ubb38\uc81c\ub97c \ubc29\uc9c0\ud558\ub294 \ub370 \uc720\uc6a9\ud558\ub2e4. \uc2e4\uc81c \uad6c\ud604\uc740 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc885\ub958\uc640 \ub3d9\uc2dc\uc131 \uc81c\uc5b4 \ubc29\uc2dd\uc5d0 \ub9de\uac8c \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc21c\uc11c \ubcf4\uc7a5\uc758 \ube44\uc6a9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc21c\uc11c\ub97c \uc5c4\uaca9\ud558\uac8c \ubcf4\uc7a5\ud560\uc218\ub85d \ubcd1\ub82c \ucc98\ub9ac\uc758 \uc790\uc720\ub3c4\uac00 \uac10\uc18c\ud55c\ub2e4. \ud2b9\uc815 \uba54\uc2dc\uc9c0\uac00 \uc2e4\ud328\ud558\uac70\ub098 \uc9c0\uc5f0\ub418\uba74 \ud6c4\uc18d \uba54\uc2dc\uc9c0\ub3c4 \uae30\ub2e4\ub824\uc57c \ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \ubaa8\ub4e0 \uba54\uc2dc\uc9c0\uc5d0 \uc804\uc5ed \uc21c\uc11c\ub97c \uac15\uc81c\ud558\uae30\ubcf4\ub2e4\ub294 \uc21c\uc11c\uac00 \uc911\uc694\ud55c \ubc94\uc704\ub97c \uc2dd\ubcc4\ud558\uace0 \ud574\ub2f9 \ubc94\uc704 \uc548\uc5d0\uc11c\ub9cc \uc21c\uc11c\ub97c \ubcf4\uc7a5\ud558\ub294 \ubc29\uc2dd\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \ud6a8\uc728\uc801\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud50c\ub808\uc774\uc5b4\ubcc4 \uc778\ubca4\ud1a0\ub9ac \ubcc0\uacbd\uc740 \ud50c\ub808\uc774\uc5b4 \ub2e8\uc704\uc758 \uc21c\uc11c\uac00 \uc911\uc694\ud558\uc9c0\ub9cc, \uc11c\ub85c \ub2e4\ub978 \ud50c\ub808\uc774\uc5b4\uc758 \ucc44\ud305 \uba54\uc2dc\uc9c0\uae4c\uc9c0 \uc804\uc5ed \uc21c\uc11c\ub85c \ucc98\ub9ac\ud560 \ud544\uc694\ub294 \uc5c6\uc744 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc911\ubcf5 \uba54\uc2dc\uc9c0 \ucc98\ub9ac<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc911\ubcf5 \uba54\uc2dc\uc9c0\ub294 At-least-once \uc804\ub2ec\uc744 \uc0ac\uc6a9\ud558\ub294 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ubc18\ub4dc\uc2dc \uace0\ub824\ud574\uc57c \ud558\ub294 \ubb38\uc81c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc911\ubcf5 \uba54\uc2dc\uc9c0 \uc790\uccb4\ub97c \uc644\uc804\ud788 \uc81c\uac70\ud558\ub824 \ud558\uae30\ubcf4\ub2e4\ub294 \uc911\ubcf5 \uba54\uc2dc\uc9c0\uac00 \ub3c4\ucc29\ud574\ub3c4 \ube44\uc988\ub2c8\uc2a4 \uacb0\uacfc\uac00 \ub2ec\ub77c\uc9c0\uc9c0 \uc54a\ub3c4\ub85d \uc124\uacc4\ud558\ub294 \uac83\uc774 \uc911\uc694\ud558\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uba54\uc2dc\uc9c0 \uace0\uc720 ID<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0dd\uc0b0\uc790\ub294 \uac01 \ub17c\ub9ac\uc801 \uc791\uc5c5\uc5d0 \uace0\uc720\ud55c ID\ub97c \ubd80\uc5ec\ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n  \"messageId\": \"reward-event-abc\",\n  \"playerId\": \"player-abc\",\n  \"rewardType\": \"DAILY_LOGIN\",\n  \"amount\": \"reward-amount\"\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \uad6c\ud604\uc5d0\uc11c\ub294 <code>amount<\/code>\ub97c \uc815\uc218\ud615 \uac12\uc73c\ub85c \uc800\uc7a5\ud55c\ub2e4. \uc18c\ube44\uc790\ub294 <code>messageId<\/code>\ub97c \uae30\uc900\uc73c\ub85c \uc774\ubbf8 \ucc98\ub9ac\ud55c \uba54\uc2dc\uc9c0\uc778\uc9c0 \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 ID\ub97c \uc7ac\uc2dc\ub3c4\ud560 \ub54c\ub9c8\ub2e4 \uc0c8\ub85c \uc0dd\uc131\ud558\uba74 \ub3d9\uc77c\ud55c \uc791\uc5c5\uc744 \uad6c\ubd84\ud560 \uc218 \uc5c6\ub2e4. \ub530\ub77c\uc11c \uac19\uc740 \ub17c\ub9ac\uc801 \uc791\uc5c5\uc758 \uc7ac\uc2dc\ub3c4\uc5d0\ub294 \uac19\uc740 \uc2dd\ubcc4\uc790\ub97c \uc0ac\uc6a9\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ucc98\ub9ac \uae30\ub85d\uacfc \ube44\uc988\ub2c8\uc2a4 \ubcc0\uacbd\uc758 \uc6d0\uc790\uc131<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c\uacfc \uac19\uc740 \uad6c\ud604\uc740 \uc548\uc804\ud558\uc9c0 \uc54a\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uba54\uc2dc\uc9c0\uac00 \ucc98\ub9ac\ub418\uc5c8\ub294\uc9c0 \ud655\uc778\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ud3ec\uc778\ud2b8\ub97c \uc9c0\uae09\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ucc98\ub9ac \uc644\ub8cc \uae30\ub85d\uc744 \uc800\uc7a5\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud3ec\uc778\ud2b8\ub97c \uc9c0\uae09\ud55c \ub4a4 \ucc98\ub9ac \uc644\ub8cc \uae30\ub85d\uc744 \uc800\uc7a5\ud558\uae30 \uc804\uc5d0 \uc11c\ubc84\uac00 \uc885\ub8cc\ub418\uba74 \uc7ac\uc804\ub2ec\ub41c \uba54\uc2dc\uc9c0\uac00 \ud3ec\uc778\ud2b8\ub97c \ub2e4\uc2dc \uc9c0\uae09\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\ub300\ub85c \ucc98\ub9ac \uc644\ub8cc \uae30\ub85d\uc744 \uba3c\uc800 \uc800\uc7a5\ud558\uace0 \ud3ec\uc778\ud2b8 \uc9c0\uae09 \uc804\uc5d0 \uc11c\ubc84\uac00 \uc885\ub8cc\ub418\uba74 \uc2e4\uc81c \ubcf4\uc0c1\uc740 \uc9c0\uae09\ub418\uc9c0 \uc54a\uc558\ub294\ub370 \uc7ac\ucc98\ub9ac\uac00 \ucc28\ub2e8\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c\ub294 \ucc98\ub9ac \uae30\ub85d\uacfc \ube44\uc988\ub2c8\uc2a4 \ubcc0\uacbd\uc744 \ub3d9\uc77c\ud55c \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \ubb36\uc744 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>BEGIN;\n\nINSERT INTO processed_messages (message_id)\nVALUES (:message_id);\n\nUPDATE player_wallet\nSET points = points + :reward_amount\nWHERE player_id = :player_id;\n\nCOMMIT;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>processed_messages.message_id<\/code>\uc5d0\ub294 \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74\uc774 \ud544\uc694\ud558\ub2e4. \uc774\ubbf8 \ucc98\ub9ac\ud55c \uba54\uc2dc\uc9c0\uac00 \uc7ac\uc804\ub2ec\ub418\uba74 INSERT\uac00 \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74 \uc704\ubc18\uc73c\ub85c \uc2e4\ud328\ud558\ubbc0\ub85c \uc18c\ube44\uc790\ub294 \uc774\ub97c \uc911\ubcf5\uc73c\ub85c \ud310\ub2e8\ud558\uace0 \ud3ec\uc778\ud2b8 \uc9c0\uae09\uc744 \uac74\ub108\ub6f8 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc81c \uad6c\ud604\uc5d0\uc11c\ub294 \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74 \uc704\ubc18\uacfc \ub2e4\ub978 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc624\ub958\ub97c \uad6c\ubd84\ud574\uc57c \ud55c\ub2e4. \ub610\ud55c \ud2b8\ub79c\uc7ad\uc158\uc774 \uc2e4\ud328\ud558\uba74 \ucc98\ub9ac \uae30\ub85d\uacfc \ud3ec\uc778\ud2b8 \ubcc0\uacbd\uc774 \ud568\uaed8 \ub864\ubc31\ub418\uc5b4\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uba71\ub4f1\uc131(Idempotency)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba71\ub4f1\uc131\uc774\ub780 \ub3d9\uc77c\ud55c \uc791\uc5c5\uc744 \uc5ec\ub7ec \ubc88 \uc2e4\ud589\ud558\ub354\ub77c\ub3c4 \ucd5c\uc885 \uacb0\uacfc\uac00 \ud55c \ubc88 \uc2e4\ud589\ud55c \uac83\uacfc \uac19\ub3c4\ub85d \ub9cc\ub4dc\ub294 \uc131\uc9c8\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ub2e4\uc74c \uc791\uc5c5\uc740 \uba71\ub4f1\uc801\uc774\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>UPDATE player_state\nSET level = :target_level\nWHERE player_id = :player_id;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uac19\uc740 \uba85\ub839\uc744 \ubc18\ubcf5 \uc2e4\ud589\ud574\ub3c4 \uc9c0\uc815\ub41c \ub808\ubca8\uc774 \uc720\uc9c0\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\uba74 \ub2e4\uc74c \uc791\uc5c5\uc740 \uba71\ub4f1\uc801\uc774\uc9c0 \uc54a\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>UPDATE player_wallet\nSET points = points + :reward_amount\nWHERE player_id = :player_id;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\ubcf5 \uc2e4\ud589\ud560 \ub54c\ub9c8\ub2e4 \ud3ec\uc778\ud2b8\uac00 \uc99d\uac00\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \uc99d\uac00, \ucc28\uac10, \ubcf4\uc0c1 \uc9c0\uae09\ucc98\ub7fc \ubc18\ubcf5 \uc2e4\ud589\uc774 \uacb0\uacfc\ub97c \ubcc0\uacbd\ud558\ub294 \uc791\uc5c5\uc5d0\ub294 \uba71\ub4f1\uc131 \ud0a4\uc640 \ucc98\ub9ac \uae30\ub85d\uc744 \ud65c\uc6a9\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e8\uc21c\ud788 \ucc98\ub9ac \uae30\ub85d\uc744 \ud655\uc778\ud558\ub294 \uac83\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\ub2e4. \ub3d9\uc77c\ud55c \uba54\uc2dc\uc9c0\uac00 \ub3d9\uc2dc\uc5d0 \ub3c4\ucc29\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc81c\uc57d \uc870\uac74\uacfc \ud2b8\ub79c\uc7ad\uc158\uc744 \uc0ac\uc6a9\ud574 \uacbd\uc7c1 \uc870\uac74\uae4c\uc9c0 \ubc29\uc9c0\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc678\ubd80 \uc2dc\uc2a4\ud15c\uacfc\uc758 \uc911\ubcf5 \ucc98\ub9ac<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \uc18c\ube44\uc790\uac00 \uc678\ubd80 \uacb0\uc81c API\ub098 \uc54c\ub9bc \uc11c\ube44\uc2a4\ub97c \ud638\ucd9c\ud55c\ub2e4\uba74 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\ub9cc\uc73c\ub85c \uc804\uccb4 \uc791\uc5c5\uc758 \uc6d0\uc790\uc131\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc678\ubd80 API\uc5d0\uc11c \uacb0\uc81c\uac00 \uc131\uacf5\ud588\uc9c0\ub9cc \uc751\ub2f5\uc774 \uc720\uc2e4\ub418\uba74 \uc18c\ube44\uc790\ub294 \uacb0\uc81c \uc131\uacf5 \uc5ec\ubd80\ub97c \uc54c \uc218 \uc5c6\ub2e4. \ub3d9\uc77c\ud55c \uc694\uccad\uc744 \ub2e4\uc2dc \uc2e4\ud589\ud558\uba74 \uc911\ubcf5 \uacb0\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uac00\ub2a5\ud558\ub2e4\uba74 \uc678\ubd80 \uc2dc\uc2a4\ud15c\uc774 \uc9c0\uc6d0\ud558\ub294 \uba71\ub4f1\uc131 \ud0a4\ub97c \uc0ac\uc6a9\ud558\uace0, \uc694\uccad \uacb0\uacfc \uc870\ud68c \ubc0f \uc7ac\uc870\uc815 \uc808\ucc28\ub97c \ub9c8\ub828\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc678\ubd80 \uc2dc\uc2a4\ud15c\uc774 \uba71\ub4f1\uc131\uc774\ub098 \uacb0\uacfc \uc870\ud68c\ub97c \uc9c0\uc6d0\ud558\uc9c0 \uc54a\ub294\ub2e4\uba74 \uc911\ubcf5 \ud6a8\uacfc\ub97c \uc644\uc804\ud788 \ubc29\uc9c0\ud558\uae30 \uc5b4\ub824\uc6b8 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5 \ubc29\uc2dd \ube44\uad50<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uad6c\ubd84<\/th><th>At-most-once<\/th><th>At-least-once<\/th><th>Exactly-once<\/th><\/tr><tr><td>\uc804\ub2ec \uc815\ucc45<\/td><td>\ucd5c\ub300 \ud55c \ubc88<\/td><td>\ucd5c\uc18c \ud55c \ubc88 \uc804\ub2ec\uc744 \uc2dc\ub3c4<\/td><td>\uc815\uc758\ub41c \ubc94\uc704\uc5d0\uc11c \ud55c \ubc88<\/td><\/tr><tr><td>\uba54\uc2dc\uc9c0 \uc720\uc2e4<\/td><td>\ubc1c\uc0dd \uac00\ub2a5<\/td><td>\uc801\uc808\ud55c \uc800\uc7a5 \ubc0f \uc7ac\uc2dc\ub3c4 \uc870\uac74\uc5d0\uc11c \uc904\uc77c \uc218 \uc788\uc74c<\/td><td>\uc801\uc6a9 \ubc94\uc704\uc640 \uad6c\ud604\uc5d0 \ub530\ub77c \ub2e4\ub984<\/td><\/tr><tr><td>\uc911\ubcf5 \uc804\ub2ec<\/td><td>\uc77c\ubc18\uc801\uc73c\ub85c \ubc29\uc9c0<\/td><td>\ubc1c\uc0dd \uac00\ub2a5<\/td><td>\uc815\uc758\ub41c \ubc94\uc704\uc5d0\uc11c \ubc29\uc9c0<\/td><\/tr><tr><td>\uad6c\ud604 \ubcf5\uc7a1\ub3c4<\/td><td>\ub0ae\uc740 \ud3b8<\/td><td>\uc911\uac04<\/td><td>\ub192\uc740 \ud3b8<\/td><\/tr><tr><td>\ud575\uc2ec \uace0\ub824 \uc0ac\ud56d<\/td><td>\uc720\uc2e4 \ud5c8\uc6a9 \uc5ec\ubd80<\/td><td>\uba71\ub4f1\uc131 \ubc0f \uc7ac\uc2dc\ub3c4<\/td><td>\ud2b8\ub79c\uc7ad\uc158 \uacbd\uacc4\uc640 \ubcf4\uc7a5 \ubc94\uc704<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Exactly-once\ub294 \uc2dc\uc2a4\ud15c \uc804\uccb4\uc758 \ubaa8\ub4e0 \ubd80\uc791\uc6a9\uc774 \uc790\ub3d9\uc73c\ub85c \ud55c \ubc88\ub9cc \ubc1c\uc0dd\ud55c\ub2e4\ub294 \ub73b\uc774 \uc544\ub2c8\ub2e4. \ube0c\ub85c\ucee4\uac00 \uc81c\uacf5\ud558\ub294 \ubcf4\uc7a5\uacfc \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubc0f \uc678\ubd80 API\uc758 \ubcf4\uc7a5\uc740 \ubcc4\ub3c4\ub85c \ud655\uc778\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2e4\uc2dc\uac04 \uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c\uc758 \uc801\uc6a9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c\ub294 \ub370\uc774\ud130\uc758 \uc131\uaca9\uc5d0 \ub530\ub77c \uc11c\ub85c \ub2e4\ub978 \uc804\ub2ec \uc815\ucc45\uc744 \uc801\uc6a9\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\ub370\uc774\ud130 \uc720\ud615<\/th><th>\uad8c\uc7a5 \uc811\uadfc \ubc29\uc2dd<\/th><th>\uc774\uc720<\/th><\/tr><tr><td>\ud50c\ub808\uc774\uc5b4 \uc704\uce58 \uac31\uc2e0<\/td><td>\uc720\uc2e4 \ud5c8\uc6a9 \ub610\ub294 \ucd5c\uc2e0 \uac12 \uc6b0\uc120<\/td><td>\uc624\ub798\ub41c \uc704\uce58\ubcf4\ub2e4 \ucd5c\uc2e0 \uc704\uce58\uac00 \uc911\uc694<\/td><\/tr><tr><td>\ucc44\ud305 \uba54\uc2dc\uc9c0<\/td><td>\uc7ac\uc804\ub2ec \ubc0f \uc911\ubcf5 \ud45c\uc2dc \ubc29\uc9c0<\/td><td>\uba54\uc2dc\uc9c0 \ub204\ub77d\uacfc \uc911\ubcf5 \ud45c\uc2dc\ub97c \uc904\uc5ec\uc57c \ud568<\/td><\/tr><tr><td>\ub9e4\uce6d \uc0c1\ud0dc \ubcc0\uacbd<\/td><td>\uba71\ub4f1\uc131 \ubc0f \uc0c1\ud0dc \uc804\uc774 \uac80\uc99d<\/td><td>\uc911\ubcf5 \ucc38\uac00\uc640 \uc798\ubabb\ub41c \uc0c1\ud0dc \ubcc0\uacbd \ubc29\uc9c0<\/td><\/tr><tr><td>\uc544\uc774\ud15c \uad6c\ub9e4<\/td><td>\ud2b8\ub79c\uc7ad\uc158 \ubc0f \uba71\ub4f1\uc131<\/td><td>\uc911\ubcf5 \uad6c\ub9e4\uc640 \uc7ac\ud654 \uc190\uc2e4 \ubc29\uc9c0<\/td><\/tr><tr><td>\uac8c\uc784 \ubcf4\uc0c1 \uc9c0\uae09<\/td><td>\uc7ac\uc804\ub2ec \ubc0f \uc911\ubcf5 \ubc29\uc9c0<\/td><td>\uc7ac\uc2dc\ub3c4\ub294 \ud5c8\uc6a9\ud558\ub418 \uc9c0\uae09 \ud6a8\uacfc\ub294 \ud55c \ubc88\ub9cc \ubc1c\uc0dd<\/td><\/tr><tr><td>\ub7ad\ud0b9 \uac31\uc2e0<\/td><td>\uc774\ubca4\ud2b8 \uc21c\uc11c \ubc0f \ubc84\uc804 \uad00\ub9ac<\/td><td>\uc624\ub798\ub41c \uc810\uc218\uac00 \ucd5c\uc2e0 \uc810\uc218\ub97c \ub36e\uc5b4\uc4f0\ub294 \ubb38\uc81c \ubc29\uc9c0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ud2b9\ud788 \uac8c\uc784 \uacbd\uc81c \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \uba54\uc2dc\uc9c0 \uc804\ub2ec \uc790\uccb4\ubcf4\ub2e4 \uc2e4\uc81c \ubcf4\uc0c1 \uc9c0\uae09\uc758 \uc815\ud569\uc131\uc774 \uc911\uc694\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\uac00 \uc7ac\uc804\ub2ec\uc744 \uc9c0\uc6d0\ud558\ub354\ub77c\ub3c4 \ud3ec\uc778\ud2b8 \ucc28\uac10, \uc544\uc774\ud15c \uc9c0\uae09, \uac70\ub798 \uae30\ub85d \uc800\uc7a5\uc774 \uc11c\ub85c \ub2e4\ub978 \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \ubd84\ub9ac\ub418\uc5b4 \uc788\ub2e4\uba74 \uc77c\ubd80\ub9cc \ubc18\uc601\ub418\ub294 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7ec\ud55c \uacbd\uc6b0\uc5d0\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158, \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74, \uc791\uc5c5 \uc0c1\ud0dc \uad00\ub9ac \ubc0f \ubcf5\uad6c \uc808\ucc28\ub97c \ud568\uaed8 \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2e4\ubb34 \uc124\uacc4 \uc6d0\uce59<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5\uc744 \uc124\uacc4\ud560 \ub54c\ub294 \ub2e4\uc74c \uc6d0\uce59\uc744 \uc801\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uba54\uc2dc\uc9c0 \uc720\uc2e4 \ud5c8\uc6a9 \uc5ec\ubd80\ub97c \uba3c\uc800 \ud310\ub2e8\ud55c\ub2e4.<\/strong> \ubaa8\ub4e0 \uc774\ubca4\ud2b8\uc5d0 \ub3d9\uc77c\ud55c \uc804\ub2ec \uc815\ucc45\uc744 \uc801\uc6a9\ud560 \ud544\uc694\ub294 \uc5c6\ub2e4.<\/li>\n\n\n\n<li><strong>\uc7ac\uc2dc\ub3c4 \uac00\ub2a5\ud55c \uc791\uc5c5\uc740 \uba71\ub4f1\uc801\uc73c\ub85c \uc124\uacc4\ud55c\ub2e4.<\/strong> \uc911\ubcf5 \ud6a8\uacfc\ub97c \ubc29\uc9c0\ud558\uc9c0 \uc54a\uc73c\uba74 \uc7ac\uc2dc\ub3c4\ub294 \ub370\uc774\ud130 \uc624\ub958\uc758 \uc6d0\uc778\uc774 \ub41c\ub2e4.<\/li>\n\n\n\n<li><strong>\ucc98\ub9ac \uae30\ub85d\uacfc \ube44\uc988\ub2c8\uc2a4 \ubcc0\uacbd\uc744 \uc6d0\uc790\uc801\uc73c\ub85c \uad00\ub9ac\ud55c\ub2e4.<\/strong> \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uacfc \uc720\ub2c8\ud06c \uc81c\uc57d \uc870\uac74\uc744 \ud65c\uc6a9\ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>\uc21c\uc11c \ubcf4\uc7a5\uc774 \ud544\uc694\ud55c \ubc94\uc704\ub97c \uc81c\ud55c\ud55c\ub2e4.<\/strong> \uc0ac\uc6a9\uc790, \uac8c\uc784 \uc138\uc158, \uc8fc\ubb38 \ub4f1 \ub3c4\uba54\uc778\ubcc4 \ud0a4\ub97c \uae30\uc900\uc73c\ub85c \uc21c\uc11c\ub97c \uad00\ub9ac\ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>\uc2e4\ud328 \uba54\uc2dc\uc9c0\uc758 \ubcf5\uad6c \uacbd\ub85c\ub97c \ub9c8\ub828\ud55c\ub2e4.<\/strong> \uc7ac\uc2dc\ub3c4 \ud69f\uc218 \uc81c\ud55c, \uc9c0\uc218 \ubc31\uc624\ud504, Dead Letter Queue(DLQ), \uc6b4\uc601\uc790 \uc7ac\ucc98\ub9ac \uae30\ub2a5 \ub4f1\uc744 \uace0\ub824\ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>\ubcf4\uc7a5 \ubc94\uc704\ub97c \ubb38\uc11c\ud654\ud55c\ub2e4.<\/strong> \ube0c\ub85c\ucee4\uc758 \uc804\ub2ec \ubcf4\uc7a5, \uc18c\ube44\uc790 \ucc98\ub9ac \ubcf4\uc7a5, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubcc0\uacbd \ubc0f \uc678\ubd80 API \ud6a8\uacfc\ub97c \uad6c\ubd84\ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>\uc7a5\uc560 \uc0c1\ud669\uc744 \ud14c\uc2a4\ud2b8\ud55c\ub2e4.<\/strong> \uba54\uc2dc\uc9c0 \uc218\uc2e0 \uc9c1\ud6c4, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ucee4\ubc0b \uc9c1\ud6c4, ACK \uc804\uc1a1 \uc9c1\uc804 \ub4f1 \uc5ec\ub7ec \uc2dc\uc810\uc5d0\uc11c \ud504\ub85c\uc138\uc2a4\uac00 \uc885\ub8cc\ub418\ub294 \uc0c1\ud669\uc744 \uac80\uc99d\ud55c\ub2e4.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5\uc774\ub780? \uba54\uc2dc\uc9c0 \uc804\ub2ec \ubcf4\uc7a5(Message Delivery Guarantees)\uc740 \ubd84\uc0b0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uba54\uc2dc\uc9c0\uac00 \uc0dd\uc0b0\uc790(Producer)\ub85c\ubd80\ud130 \uc18c\ube44\uc790(Consumer)\uc5d0\uac8c \uc804\ub2ec\ub418\uace0 \ucc98\ub9ac\ub418\ub294 \uacfc\uc815\uc5d0\uc11c \ubc1c\uc0dd\ud560 \uc218 \uc788\ub294 \uc720\uc2e4, \uc911\ubcf5, \uc21c\uc11c \ubcc0\uacbd \ub4f1\uc758 \ubb38\uc81c\ub97c \uc5b4\ub5bb\uac8c \ub2e4\ub8f0 \uac83\uc778\uc9c0 \uc815\uc758\ud558\ub294 \uac1c\ub150\uc774\ub2e4. \uba54\uc2dc\uc9c0 \ube0c\ub85c\ucee4\ub97c \uc0ac\uc6a9\ud558\ub294 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \uba54\uc2dc\uc9c0\ub97c \uc804\uc1a1\ud588\ub2e4\uace0 \ud574\uc11c \ubc18\ub4dc\uc2dc \ud55c \ubc88\ub9cc \ucc98\ub9ac\ub418\ub294 \uac83\uc740 \uc544\ub2c8\ub2e4. \ub124\ud2b8\uc6cc\ud06c \ub2e8\uc808, \uc11c\ubc84 \uc7a5\uc560, \ud0c0\uc784\uc544\uc6c3, \uc18c\ube44\uc790 \uc7ac\uc2dc\uc791, ACK(Acknowledgment) \uc720\uc2e4 \ub4f1\uc758 \uc0c1\ud669\uc73c\ub85c \uc778\ud574 [&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-2695","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\/2695","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=2695"}],"version-history":[{"count":1,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2695\/revisions"}],"predecessor-version":[{"id":2696,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=\/wp\/v2\/posts\/2695\/revisions\/2696"}],"wp:attachment":[{"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wayhope.kro.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}