{"id":2755,"date":"2026-10-26T02:51:42","date_gmt":"2026-10-26T02:51:42","guid":{"rendered":"https:\/\/wayhope.kro.kr\/?p=2755"},"modified":"2026-10-26T02:51:42","modified_gmt":"2026-10-26T02:51:42","slug":"redis-%ed%8a%b8%eb%9e%9c%ec%9e%ad%ec%85%98transaction-%ec%9d%b4%ed%95%b4%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/wayhope.kro.kr\/?p=2755","title":{"rendered":"Redis \ud2b8\ub79c\uc7ad\uc158(Transaction) \uc774\ud574\ud558\uae30"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Redis\ub294 \ub2e8\uc21c\ud55c Key-Value \uc800\uc7a5\uc18c\ub97c \ub118\uc5b4 \uc5ec\ub7ec \uba85\ub839\uc744 \ud558\ub098\uc758 \uc791\uc5c5 \ub2e8\uc704\ub85c \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ud2b8\ub79c\uc7ad\uc158 \uae30\ub2a5\uc744 \uc81c\uacf5\ud55c\ub2e4. \uc774\ub97c \ud65c\uc6a9\ud558\uba74 \uc5ec\ub7ec \ub370\uc774\ud130 \ubcc0\uacbd \uba85\ub839\uc744 \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ud558\uace0, \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uba85\ub839\uc774 \uc911\uac04\uc5d0 \ub07c\uc5b4\ub4e4\uc9c0 \uc54a\ub3c4\ub85d \uc81c\uc5b4\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud558\uc9c0\ub9cc Redis\uc758 \ud2b8\ub79c\uc7ad\uc158\uc740 MySQL\uacfc \uac19\uc740 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ud2b8\ub79c\uc7ad\uc158\uacfc \ub3d9\uc791 \ubc29\uc2dd\uc774 \ub2e4\ub974\ub2e4. \ud2b9\ud788 <strong>\uc6d0\uc790\uc131(Atomicity), \ub864\ubc31(Rollback), \ub3d9\uc2dc\uc131 \uc81c\uc5b4<\/strong>\uc5d0 \ub300\ud55c \ucc28\uc774\ub97c \uc815\ud655\ud788 \uc774\ud574\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Redis \ud2b8\ub79c\uc7ad\uc158\uc774\ub780?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud2b8\ub79c\uc7ad\uc158\uc740 \uc5ec\ub7ec Redis \uba85\ub839\uc744 \ud050\uc5d0 \ub4f1\ub85d\ud55c \ub4a4, <code>EXEC<\/code> \uba85\ub839\uc744 \ud1b5\ud574 \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ud558\ub294 \uae30\ub2a5\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\ubc18\uc801\uc778 Redis \uba85\ub839\uc740 \uac1c\ubcc4\uc801\uc73c\ub85c \uc2e4\ud589\ub41c\ub2e4. \uc5ec\ub7ec \uba85\ub839\uc744 \uc5f0\uc18d\ud574\uc11c \ud638\ucd9c\ud558\uba74 \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uba85\ub839\uc774 \uadf8 \uc0ac\uc774\uc5d0 \uc2e4\ud589\ub420 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\uba74 Redis \ud2b8\ub79c\uc7ad\uc158\uc740 <code>MULTI<\/code>\uc640 <code>EXEC<\/code>\ub97c \uc0ac\uc6a9\ud574 \uba85\ub839\uc744 \ud558\ub098\uc758 \uc2e4\ud589 \ub2e8\uc704\ub85c \ubb36\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \uba85\ub839\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>MULTI<\/code>: \ud2b8\ub79c\uc7ad\uc158 \uc2dc\uc791<\/li>\n\n\n\n<li><code>EXEC<\/code>: \ud050\uc5d0 \ub4f1\ub85d\ub41c \uba85\ub839 \uc2e4\ud589<\/li>\n\n\n\n<li><code>DISCARD<\/code>: \uc2e4\ud589 \uc804 \ud2b8\ub79c\uc7ad\uc158 \ucde8\uc18c<\/li>\n\n\n\n<li><code>WATCH<\/code>: \ud2b9\uc815 \ud0a4\uc758 \ubcc0\uacbd \uc5ec\ubd80 \uac10\uc2dc<\/li>\n\n\n\n<li><code>UNWATCH<\/code>: \uac10\uc2dc \uc911\uc778 \ud0a4 \ud574\uc81c<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">MULTI\uc640 EXEC\uc758 \ub3d9\uc791 \ubc29\uc2dd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud2b8\ub79c\uc7ad\uc158\uc740 <code>MULTI<\/code>\ub97c \ud638\ucd9c\ud558\uba74 \uc2dc\uc791\ub41c\ub2e4. \uc774\ud6c4 \uc785\ub825\ud558\ub294 \uba85\ub839\uc740 \uc989\uc2dc \uc2e4\ud589\ub418\uc9c0 \uc54a\uace0 \ud050\uc5d0 \ub4f1\ub85d\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>EXEC<\/code>\uac00 \ud638\ucd9c\ub418\uba74 \ud050\uc5d0 \ub4f1\ub85d\ub41c \uba85\ub839\ub4e4\uc774 \ub4f1\ub85d\ub41c \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \uacc4\uc815\uc758 \ud3ec\uc778\ud2b8\ub97c \ucc28\uac10\ud558\uace0 \uac70\ub798 \ub0b4\uc5ed\uc744 \uae30\ub85d\ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uc790.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MULTI\nDECRBY user:100:points 100\nLPUSH user:100:history \"\ud3ec\uc778\ud2b8 100 \ucc28\uac10\"\nEXEC<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uac01 \uba85\ub839\uc758 \uc758\ubbf8\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>MULTI<\/code>: \ud2b8\ub79c\uc7ad\uc158\uc744 \uc2dc\uc791\ud55c\ub2e4.<\/li>\n\n\n\n<li><code>DECRBY<\/code>: \ud3ec\uc778\ud2b8\ub97c \ucc28\uac10\ud558\ub294 \uba85\ub839\uc744 \ud050\uc5d0 \ub4f1\ub85d\ud55c\ub2e4.<\/li>\n\n\n\n<li><code>LPUSH<\/code>: \uac70\ub798 \ub0b4\uc5ed\uc744 \ucd94\uac00\ud558\ub294 \uba85\ub839\uc744 \ud050\uc5d0 \ub4f1\ub85d\ud55c\ub2e4.<\/li>\n\n\n\n<li><code>EXEC<\/code>: \ub4f1\ub85d\ub41c \uba85\ub839\uc744 \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><code>EXEC<\/code>\uac00 \uc2e4\ud589\ub418\ub294 \ub3d9\uc548\uc5d0\ub294 \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uba85\ub839\uc774 \ud574\ub2f9 \ud2b8\ub79c\uc7ad\uc158\uc758 \uba85\ub839 \uc0ac\uc774\uc5d0 \ub07c\uc5b4\ub4e4\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub9cc \uc774 \uc608\uc81c\ub294 \ud2b8\ub79c\uc7ad\uc158\uc758 \uc2e4\ud589 \uc21c\uc11c\ub9cc \ubcf4\uc7a5\ud560 \ubfd0, \ud3ec\uc778\ud2b8\uac00 \ucda9\ubd84\ud55c\uc9c0 \uac80\uc99d\ud558\uac70\ub098 \ucc28\uac10 \uc2e4\ud328 \uc2dc \uac70\ub798 \ub0b4\uc5ed\uc744 \uc790\ub3d9\uc73c\ub85c \ucde8\uc18c\ud558\uc9c0\ub294 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Redis \ud2b8\ub79c\uc7ad\uc158\uc758 \uc6d0\uc790\uc131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c \uc6d0\uc790\uc131\uc740 \uc791\uc5c5 \uc804\uccb4\uac00 \uc131\uacf5\ud558\uac70\ub098 \uc804\uccb4\uac00 \uc2e4\ud328\ud558\ub294 \uc131\uc9c8\uc744 \uc758\ubbf8\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud2b8\ub79c\uc7ad\uc158\ub3c4 \uc5ec\ub7ec \uba85\ub839\uc758 \uc2e4\ud589 \ub3c4\uc911 \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uba85\ub839\uc774 \ub07c\uc5b4\ub4e4\uc9c0 \uc54a\ub3c4\ub85d \ucc98\ub9ac\ud55c\ub2e4. \uadf8\ub7ec\ub098 \uc774\ub97c \ubaa8\ub4e0 \uba85\ub839\uc774 \uc131\uacf5\ud558\uac70\ub098 \ubaa8\ub450 \ucde8\uc18c\ub418\ub294 \uc644\uc804\ud55c \uc6d0\uc790\uc131\uc73c\ub85c \uc774\ud574\ud558\uba74 \uc548 \ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud2b8\ub79c\uc7ad\uc158\uc5d0\uc11c\ub294 \ud06c\uac8c \ub450 \uac00\uc9c0 \uc624\ub958\ub97c \uad6c\ubd84\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc2e4\ud589 \uc804 \uba85\ub839 \uc624\ub958<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba85\ub839\uc758 \ubb38\ubc95\uc774 \uc798\ubabb\ub418\uc5c8\uac70\ub098 \uc778\uc790 \uac1c\uc218\uac00 \ub9de\uc9c0 \uc54a\ub294 \ub4f1 \ud050\uc5d0 \ub4f1\ub85d\ud558\ub294 \ub2e8\uacc4\uc5d0\uc11c \uc624\ub958\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uacbd\uc6b0 Redis\ub294 \ud574\ub2f9 \uba85\ub839\uc744 \ud050\uc5d0 \ub123\uc9c0 \ubabb\ud55c\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc774\ub7ec\ud55c \uc624\ub958\uac00 \ubc1c\uc0dd\ud55c \ud2b8\ub79c\uc7ad\uc158\uc5d0\uc11c <code>EXEC<\/code>\ub97c \uc2e4\ud589\ud558\uba74 \ud2b8\ub79c\uc7ad\uc158 \uc804\uccb4\uac00 \uac70\ubd80\ub41c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MULTI\nSET user:100:name \"Kim\"\nSET user:100:age\nEXEC<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\ub450 \ubc88\uc9f8 <code>SET<\/code> \uba85\ub839\uc740 \ud544\uc218 \uc778\uc790\uac00 \ubd80\uc871\ud558\ub2e4. Redis\ub294 \uc774 \uc624\ub958\ub97c \uac10\uc9c0\ud558\uace0 \ud2b8\ub79c\uc7ad\uc158 \uc2e4\ud589\uc744 \uac70\ubd80\ud560 \uc218 \uc788\uc73c\uba70, \uccab \ubc88\uc9f8 <code>SET<\/code>\ub3c4 \uc2e4\ud589\ub418\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc2e4\ud589 \uc911 \uba85\ub839 \uc624\ub958<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uba85\ub839 \uc790\uccb4\ub294 \uc720\ud6a8\ud558\uc9c0\ub9cc \uc2e4\uc81c \uc2e4\ud589 \uc2dc \ub370\uc774\ud130 \ud0c0\uc785 \ub4f1\uc758 \ubb38\uc81c\ub85c \uc2e4\ud328\ud560 \uc218\ub3c4 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SET user:100:points \"hello\"\n\nMULTI\nINCR user:100:points\nSET user:100:status \"active\"\nEXEC<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>INCR<\/code>\uc740 \uc22b\uc790\uac00 \uc544\ub2cc \ubb38\uc790\uc5f4\uc5d0 \uc801\uc6a9\ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c \uc624\ub958\uac00 \ubc1c\uc0dd\ud55c\ub2e4. \uadf8\ub7ec\ub098 \ub4a4\uc5d0 \uc788\ub294 <code>SET<\/code> \uba85\ub839\uc740 \uacc4\uc18d \uc2e4\ud589\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc989, <code>EXEC<\/code>\ub294 \uba85\ub839 \uc2e4\ud589 \ub3c4\uc911 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\ub2e4\uace0 \ud574\uc11c \uc774\ubbf8 \uc2e4\ud589\ub41c \uba85\ub839\uc744 \uc790\ub3d9\uc73c\ub85c \ub418\ub3cc\ub9ac\uac70\ub098 \ub098\uba38\uc9c0 \uba85\ub839\uc744 \ubaa8\ub450 \ucde8\uc18c\ud558\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Redis \ud2b8\ub79c\uc7ad\uc158\uc5d0\ub294 \uc77c\ubc18\uc801\uc778 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud2b8\ub79c\uc7ad\uc158\uacfc \uac19\uc740 \uc790\ub3d9 \ub864\ubc31 \uae30\ub2a5\uc774 \uc5c6\ub2e4.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DISCARD\ub97c \uc774\uc6a9\ud55c \ud2b8\ub79c\uc7ad\uc158 \ucde8\uc18c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>DISCARD<\/code>\ub294 <code>EXEC<\/code>\uac00 \uc2e4\ud589\ub418\uae30 \uc804\uc5d0 \ud050\uc5d0 \ub4f1\ub85d\ub41c \uba85\ub839\uc744 \ucde8\uc18c\ud560 \ub54c \uc0ac\uc6a9\ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MULTI\nSET user:100:name \"Kim\"\nSET user:100:status \"active\"\nDISCARD<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uacbd\uc6b0 \ub4f1\ub85d\ub41c \uba85\ub839\uc740 \uc2e4\ud589\ub418\uc9c0 \uc54a\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc758\ud560 \uc810\uc740 <code>DISCARD<\/code>\uac00 \uc774\ubbf8 \uc2e4\ud589\ub41c \uba85\ub839\uc744 \ub418\ub3cc\ub9ac\ub294 \ub864\ubc31 \uba85\ub839\uc740 \uc544\ub2c8\ub77c\ub294 \uac83\uc774\ub2e4. \ud2b8\ub79c\uc7ad\uc158\uc774 <code>EXEC<\/code>\ub85c \uc2e4\ud589\ub41c \uc774\ud6c4\uc5d0\ub294 <code>DISCARD<\/code>\ub85c \uacb0\uacfc\ub97c \ucde8\uc18c\ud560 \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">WATCH\ub97c \uc774\uc6a9\ud55c \ub099\uad00\uc801 \ub3d9\uc2dc\uc131 \uc81c\uc5b4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Redis\uc758 <code>WATCH<\/code>\ub294 \ud2b9\uc815 \ud0a4\uac00 \ubcc0\uacbd\ub418\uc5c8\ub294\uc9c0 \uac10\uc2dc\ud558\ub294 \uae30\ub2a5\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud2b8\ub79c\uc7ad\uc158\uc774 \uc2e4\ud589\ub418\uae30 \uc804\uc5d0 \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uac10\uc2dc \ub300\uc0c1 \ud0a4\ub97c \ubcc0\uacbd\ud588\ub2e4\uba74 <code>EXEC<\/code>\ub294 \ud2b8\ub79c\uc7ad\uc158\uc744 \uc2e4\ud589\ud558\uc9c0 \uc54a\uace0 \uc911\ub2e8\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub97c \ud1b5\ud574 \uc5ec\ub7ec \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \ub3d9\uc77c\ud55c \ub370\uc774\ud130\ub97c \ub3d9\uc2dc\uc5d0 \uc218\uc815\ud560 \ub54c \ubc1c\uc0dd\ud560 \uc218 \uc788\ub294 \uacbd\uc7c1 \uc870\uac74\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ud3ec\uc778\ud2b8\uac00 \ucda9\ubd84\ud560 \ub54c\ub9cc \ucc28\uac10\ud558\ub294 \ub85c\uc9c1\uc744 \uad6c\ud604\ud55c\ub2e4\uace0 \uac00\uc815\ud558\uc790.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>WATCH user:100:points\n\nGET user:100:points<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uc870\ud68c \uacb0\uacfc\ub97c \ud655\uc778\ud55c \ub4a4 \ud3ec\uc778\ud2b8\uac00 \ucda9\ubd84\ud558\uba74 \ub2e4\uc74c \uba85\ub839\uc744 \uc2e4\ud589\ud55c\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MULTI\nDECRBY user:100:points 100\nEXEC<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>WATCH<\/code>\ub97c \uc124\uc815\ud55c \uc2dc\uc810\ubd80\ud130 <code>EXEC<\/code>\uac00 \ud638\ucd9c\ub420 \ub54c\uae4c\uc9c0 \uac10\uc2dc \ub300\uc0c1 \ud0a4\uac00 \ubcc0\uacbd\ub418\uba74 \ud2b8\ub79c\uc7ad\uc158\uc774 \uc911\ub2e8\ub41c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uc774 \uacbd\uc6b0 \ucd5c\uc2e0 \ud3ec\uc778\ud2b8\ub97c \ub2e4\uc2dc \uc870\ud68c\ud558\uace0 \uc870\uac74\uc744 \uc7ac\uac80\uc99d\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub9cc \uc704 \uc608\uc81c\uc5d0\ub294 \uc911\uc694\ud55c \ud55c\uacc4\uac00 \uc788\ub2e4. \ud3ec\uc778\ud2b8\ub97c \uc870\ud68c\ud558\uace0 \ucda9\ubd84\ud55c\uc9c0 \ud310\ub2e8\ud558\ub294 \uc791\uc5c5\uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc774\ub8e8\uc5b4\uc9c0\ubbc0\ub85c, \uc2e4\uc81c \uad6c\ud604\uc5d0\uc11c\ub294 \uc870\ud68c\uc640 \uc870\uac74 \uac80\uc99d, \uc7ac\uc2dc\ub3c4 \uc815\ucc45\uae4c\uc9c0 \ud568\uaed8 \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">WATCH\ub97c \ud65c\uc6a9\ud55c \uc2e4\uc81c \uad6c\ud604 \uc608\uc2dc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud074\ub77c\uc774\uc5b8\ud2b8 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 \ub2e4\uc74c\uacfc \uac19\uc740 \uad6c\uc870\ub85c \uad6c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>async function spendPoints(redis, userId, amount) {\n  const key = `user:${userId}:points`;\n\n  for (let attempt = 0; attempt &lt; 5; attempt++) {\n    await redis.watch(key);\n\n    try {\n      const points = Number(await redis.get(key));\n\n      if (!Number.isFinite(points) || points &lt; amount) {\n        await redis.unwatch();\n        return false;\n      }\n\n      const result = await redis\n        .multi()\n        .decrby(key, amount)\n        .exec();\n\n      \/\/ WATCH \ub300\uc0c1 \ud0a4\uac00 \ubcc0\uacbd\ub418\uba74 \uc2e4\ud589\uc774 \uc911\ub2e8\ub420 \uc218 \uc788\ub2e4.\n      if (result !== null) {\n        return true;\n      }\n    } catch (error) {\n      throw error;\n    }\n  }\n\n  throw new Error(\"\ud3ec\uc778\ud2b8 \ucc28\uac10 \uc7ac\uc2dc\ub3c4 \ud69f\uc218 \ucd08\uacfc\");\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc704 \ucf54\ub4dc\ub294 \uac1c\ub150\uc744 \uc124\uba85\ud558\uae30 \uc704\ud55c \uc608\uc2dc\ub2e4. \uc2e4\uc81c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc5d0 \ub530\ub77c <code>EXEC<\/code> \uc911\ub2e8 \uacb0\uacfc\uc640 \uc624\ub958 \ucc98\ub9ac \ubc29\uc2dd\uc774 \ub2e4\ub97c \uc218 \uc788\ub2e4. \ub610\ud55c \uc6b4\uc601 \ucf54\ub4dc\uc5d0\uc11c\ub294 <code>WATCH<\/code> \uc0c1\ud0dc\uac00 \ub0a8\uc9c0 \uc54a\ub3c4\ub85d \uc5f0\uacb0 \uad00\ub9ac\uc640 \uc608\uc678 \ucc98\ub9ac\ub3c4 \uc2e0\uc911\ud558\uac8c \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Redis \ud2b8\ub79c\uc7ad\uc158\uacfc Lua \uc2a4\ud06c\ub9bd\ud2b8\uc758 \ucc28\uc774<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Redis\uc5d0\uc11c \uc5ec\ub7ec \uba85\ub839\uc744 \uc870\uac74\uc5d0 \ub530\ub77c \uc548\uc804\ud558\uac8c \uc2e4\ud589\ud574\uc57c \ud55c\ub2e4\uba74 \ud2b8\ub79c\uc7ad\uc158 \uc678\uc5d0\ub3c4 Lua \uc2a4\ud06c\ub9bd\ud2b8\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud2b8\ub79c\uc7ad\uc158\uacfc Lua \uc2a4\ud06c\ub9bd\ud2b8\uc758 \ud575\uc2ec\uc801\uc778 \ucc28\uc774\ub294 <strong>\uc870\uac74 \uac80\uc99d\uacfc \ub370\uc774\ud130 \ubcc0\uacbd\uc744 \uc5b4\ub514\uc5d0\uc11c \uc218\ud589\ud558\ub294\uac00<\/strong>\uc5d0 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud2b8\ub79c\uc7ad\uc158\uc740 \uc5ec\ub7ec \uba85\ub839\uc744 \ud050\uc5d0 \ub4f1\ub85d\ud558\uace0 \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ud55c\ub2e4. \uc870\uac74 \uac80\uc99d\uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc774\ub8e8\uc5b4\uc9c4\ub2e4\uba74 <code>WATCH<\/code>\uc640 \uc7ac\uc2dc\ub3c4 \ub85c\uc9c1\uc774 \ud544\uc694\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubc18\uba74 Lua \uc2a4\ud06c\ub9bd\ud2b8\ub294 \uc870\uac74 \uac80\uc99d\uacfc \ub370\uc774\ud130 \ubcc0\uacbd \ub85c\uc9c1\uc744 Redis \uc11c\ubc84 \ub0b4\ubd80\uc5d0\uc11c \uc2e4\ud589\ud55c\ub2e4. \uc2a4\ud06c\ub9bd\ud2b8\uac00 \uc2e4\ud589\ub418\ub294 \ub3d9\uc548 \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uba85\ub839\uc774 \uc911\uac04\uc5d0 \ub07c\uc5b4\ub4e4\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 \uac80\uc0ac\uc640 \ubcc0\uacbd \uc0ac\uc774\uc758 \uacbd\uc7c1 \uc870\uac74\uc744 \ubc29\uc9c0\ud558\uae30\uc5d0 \uc720\ub9ac\ud558\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ud3ec\uc778\ud2b8\uac00 \ucda9\ubd84\ud55c \uacbd\uc6b0\uc5d0\ub9cc \ucc28\uac10\ud558\ub824\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>local points = tonumber(redis.call('GET', KEYS&#91;1]) or '0')\nlocal amount = tonumber(ARGV&#91;1])\n\nif not amount or amount &lt;= 0 then\n    return redis.error_reply('Invalid amount')\nend\n\nif points &lt; amount then\n    return 0\nend\n\nredis.call('DECRBY', KEYS&#91;1], amount)\nreturn 1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uc774 \uc2a4\ud06c\ub9bd\ud2b8\uc5d0 \ud3ec\uc778\ud2b8 \ud0a4\uc640 \ucc28\uac10\ud560 \uc591\uc744 \uc804\ub2ec\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubc18\ud658\uac12 <code>1<\/code>: \ucc28\uac10 \uc131\uacf5<\/li>\n\n\n\n<li>\ubc18\ud658\uac12 <code>0<\/code>: \ud3ec\uc778\ud2b8 \ubd80\uc871<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2a4\ud06c\ub9bd\ud2b8\ub294 \ud3ec\uc778\ud2b8\ub97c \uc870\ud68c\ud558\uace0 \uc870\uac74\uc744 \uac80\uc0ac\ud55c \ub4a4 \ucc28\uac10\ud558\ub294 \uacfc\uc815\uc744 \ud558\ub098\uc758 \uc2e4\ud589 \ub2e8\uc704\ub85c \ucc98\ub9ac\ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\ub9cc Lua \uc2a4\ud06c\ub9bd\ud2b8 \uc5ed\uc2dc \uc2e4\ud589 \ub3c4\uc911 \uc624\ub958\uac00 \ubc1c\uc0dd\ud588\uc744 \ub54c \uc774\ubbf8 \uc218\ud589\ub41c \uc4f0\uae30 \uc791\uc5c5\uc744 \uc790\ub3d9\uc73c\ub85c \ub864\ubc31\ud558\uc9c0 \uc54a\ub294\ub2e4. \ub530\ub77c\uc11c \uc2a4\ud06c\ub9bd\ud2b8 \ub0b4\ubd80\uc5d0\uc11c\ub3c4 \uc624\ub958\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\ub294 \uc791\uc5c5\uc758 \uc21c\uc11c\uc640 \uac80\uc99d\uc744 \uc2e0\uc911\ud558\uac8c \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Redis \ud2b8\ub79c\uc7ad\uc158\uc758 \ud55c\uacc4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Redis \ud2b8\ub79c\uc7ad\uc158\uc744 \uc124\uacc4\ud560 \ub54c\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud55c\uacc4\ub97c \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc790\ub3d9 \ub864\ubc31 \ubd80\uc7ac:<\/strong> \uc2e4\ud589 \uc911 \uba85\ub839\uc774 \uc2e4\ud328\ud574\ub3c4 \uc55e\uc11c \uc131\uacf5\ud55c \uba85\ub839\uc740 \ub418\ub3cc\ub824\uc9c0\uc9c0 \uc54a\ub294\ub2e4.<\/li>\n\n\n\n<li><strong>\uc870\uac74\ubd80 \uc2e4\ud589\uc758 \ud55c\uacc4:<\/strong> \uc870\uac74\uc5d0 \ub530\ub77c \uba85\ub839\uc744 \uc2e4\ud589\ud558\ub824\uba74 <code>WATCH<\/code> \ub610\ub294 Lua \uc2a4\ud06c\ub9bd\ud2b8 \ub4f1\uc744 \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/li>\n\n\n\n<li><strong>\uc678\ubd80 \uc2dc\uc2a4\ud15c\uacfc\uc758 \uc6d0\uc790\uc131 \ubd80\uc7ac:<\/strong> Redis\uc640 MySQL\uc744 \ud568\uaed8 \ubcc0\uacbd\ud558\ub354\ub77c\ub3c4 \ub450 \uc2dc\uc2a4\ud15c\uc758 \ubcc0\uacbd\uc744 \ud558\ub098\uc758 \ud2b8\ub79c\uc7ad\uc158\uc73c\ub85c \ubb36\uc744 \uc218 \uc5c6\ub2e4.<\/li>\n\n\n\n<li><strong>\uc7ac\uc2dc\ub3c4\uc5d0 \ub530\ub978 \uc911\ubcf5 \ucc98\ub9ac:<\/strong> \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uc2e4\ud589 \uacb0\uacfc\ub97c \ubc1b\uc9c0 \ubabb\ud574 \uc7ac\uc2dc\ub3c4\ud558\uba74 \uc791\uc5c5\uc774 \uc911\ubcf5\ub420 \uc218 \uc788\ub2e4.<\/li>\n\n\n\n<li><strong>\uba85\ub839 \uc2e4\ud589 \uc21c\uc11c\uc758 \ubcf4\uc7a5\uacfc \uc601\uc18d\uc131\uc740 \ubcc4\uac1c:<\/strong> \ud2b8\ub79c\uc7ad\uc158\uc774 \uc815\uc0c1 \uc2e4\ud589\ub418\uc5c8\ub2e4\uace0 \ud574\uc11c \uc7a5\uc560 \uc0c1\ud669\uc5d0\uc11c\ub3c4 \ub370\uc774\ud130\uac00 \ubc18\ub4dc\uc2dc \uc601\uad6c \ubcf4\uc874\ub41c\ub2e4\ub294 \ub73b\uc740 \uc544\ub2c8\ub2e4. \uc601\uc18d\uc131\uc740 AOF\uc640 RDB \uc124\uc815, \ubcf5\uc81c \ubc0f \uc7a5\uc560 \uc870\uce58 \uc815\ucc45 \ub4f1\uc744 \ubcc4\ub3c4\ub85c \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud2b9\ud788 \ud3ec\uc778\ud2b8, \uc7ac\ud654, \uacb0\uc81c, \uac8c\uc784 \uacb0\uacfc \uc815\uc0b0\ucc98\ub7fc \ub370\uc774\ud130 \uc815\ud569\uc131\uc774 \uc911\uc694\ud55c \uc601\uc5ed\uc5d0\uc11c\ub294 \ub2e8\uc21c\ud788 <code>MULTI<\/code>\uc640 <code>EXEC<\/code>\ub97c \uc0ac\uc6a9\ud588\ub2e4\ub294 \uc0ac\uc2e4\ub9cc\uc73c\ub85c \uc548\uc804\uc131\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc2e4\uc2dc\uac04 \uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c\uc758 \ud65c\uc6a9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e4\uc2dc\uac04 \uba40\ud2f0\ud50c\ub808\uc774 \uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c\ub294 Redis\ub97c \uc774\uc6a9\ud574 \ub9e4\uce6d \ub300\uae30\uc5f4, \uc784\uc2dc \uac8c\uc784 \uc0c1\ud0dc, \uc628\ub77c\uc778 \uc0c1\ud0dc, \ub7ad\ud0b9, \ud3ec\uc778\ud2b8 \ub4f1\uc758 \ub370\uc774\ud130\ub97c \uad00\ub9ac\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub7ec\ud55c \ub370\uc774\ud130\ub294 \uc5ec\ub7ec \uc11c\ubc84 \uc778\uc2a4\ud134\uc2a4\uc5d0\uc11c \ub3d9\uc2dc\uc5d0 \uc811\uadfc\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c, \uc791\uc5c5\uc758 \ud2b9\uc131\uc5d0 \ub530\ub77c \uc801\uc808\ud55c \ub3d9\uc2dc\uc131 \uc81c\uc5b4 \ubc29\ubc95\uc744 \uc120\ud0dd\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uc791\uc5c5<\/th><th>\uace0\ub824\ud560 \ubc29\uc2dd<\/th><\/tr><tr><td>\uc5ec\ub7ec \ub3c5\ub9bd\uc801\uc778 \ud0a4 \ubcc0\uacbd<\/td><td><code>MULTI<\/code> \/ <code>EXEC<\/code><\/td><\/tr><tr><td>\uc870\ud68c\ud55c \uac12\uc5d0 \ub300\ud55c \uc870\uac74\ubd80 \ubcc0\uacbd<\/td><td><code>WATCH<\/code>\uc640 \uc7ac\uc2dc\ub3c4<\/td><\/tr><tr><td>\uc870\uac74 \uac80\uc99d\uacfc \ubcc0\uacbd\uc744 \ud55c \ubc88\uc5d0 \uc218\ud589<\/td><td>Lua \uc2a4\ud06c\ub9bd\ud2b8<\/td><\/tr><tr><td>Redis\uc640 MySQL\uc758 \ub370\uc774\ud130 \ub3d9\uae30\ud654<\/td><td>Outbox, Saga \ub4f1 \ubcc4\ub3c4 \uc124\uacc4<\/td><\/tr><tr><td>\uc911\ubcf5 \uc694\uccad\uc5d0 \ub300\ud55c \uc548\uc804\uc131<\/td><td>\uba71\ub4f1\uc131 \ud0a4\uc640 \uc911\ubcf5 \ucc98\ub9ac \ubc29\uc9c0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \ud3ec\ucee4 \uac8c\uc784 \uc11c\ubc84\uc5d0\uc11c \ud50c\ub808\uc774\uc5b4\uc758 \ud3ec\uc778\ud2b8\ub97c \ucc28\uac10\ud558\ub294 \uacbd\uc6b0, Redis \ub0b4\ubd80\uc758 \ud3ec\uc778\ud2b8 \ubcc0\uacbd\ubfd0 \uc544\ub2c8\ub77c \uc2e4\uc81c \uac8c\uc784 \uacb0\uacfc\uc640 MySQL\uc5d0 \uc800\uc7a5\ub41c \uc815\uc0b0 \ub0b4\uc5ed \uc0ac\uc774\uc758 \uc815\ud569\uc131\ub3c4 \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Redis\uc5d0\uc11c \ud3ec\uc778\ud2b8\ub97c \ucc28\uac10\ud55c \uc9c1\ud6c4 \uc11c\ubc84\uac00 \uc885\ub8cc\ub418\uac70\ub098 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc800\uc7a5\uc5d0 \uc2e4\ud328\ud55c\ub2e4\uba74 \ub450 \uc2dc\uc2a4\ud15c\uc758 \uc0c1\ud0dc\uac00 \ub2ec\ub77c\uc9c8 \uc218 \uc788\ub2e4. \uc774\ub7f0 \ubb38\uc81c\ub294 Redis \ud2b8\ub79c\uc7ad\uc158\ub9cc\uc73c\ub85c \ud574\uacb0\ud560 \uc218 \uc5c6\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub530\ub77c\uc11c \uc911\uc694\ud55c \uc7ac\ud654\uc640 \uc815\uc0b0 \ub370\uc774\ud130\ub294 MySQL\uc744 \uae30\uc900 \ub370\uc774\ud130 \uc800\uc7a5\uc18c\ub85c \uc0ac\uc6a9\ud560\uc9c0, Redis\ub97c \uae30\uc900\uc73c\ub85c \uc0ac\uc6a9\ud560\uc9c0 \uba3c\uc800 \uacb0\uc815\ud558\uace0, \ub450 \uc2dc\uc2a4\ud15c \uc0ac\uc774\uc758 \ub370\uc774\ud130 \uc77c\uad00\uc131\uc744 \uc720\uc9c0\ud558\uae30 \uc704\ud55c \ubcf5\uad6c \ubc0f \uc7ac\ucc98\ub9ac \uc804\ub7b5\uc744 \uc124\uacc4\ud574\uc57c \ud55c\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis\ub294 \ub2e8\uc21c\ud55c Key-Value \uc800\uc7a5\uc18c\ub97c \ub118\uc5b4 \uc5ec\ub7ec \uba85\ub839\uc744 \ud558\ub098\uc758 \uc791\uc5c5 \ub2e8\uc704\ub85c \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ud2b8\ub79c\uc7ad\uc158 \uae30\ub2a5\uc744 \uc81c\uacf5\ud55c\ub2e4. \uc774\ub97c \ud65c\uc6a9\ud558\uba74 \uc5ec\ub7ec \ub370\uc774\ud130 \ubcc0\uacbd \uba85\ub839\uc744 \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ud558\uace0, \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uba85\ub839\uc774 \uc911\uac04\uc5d0 \ub07c\uc5b4\ub4e4\uc9c0 \uc54a\ub3c4\ub85d \uc81c\uc5b4\ud560 \uc218 \uc788\ub2e4. \ud558\uc9c0\ub9cc Redis\uc758 \ud2b8\ub79c\uc7ad\uc158\uc740 MySQL\uacfc \uac19\uc740 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ud2b8\ub79c\uc7ad\uc158\uacfc \ub3d9\uc791 \ubc29\uc2dd\uc774 \ub2e4\ub974\ub2e4. \ud2b9\ud788 \uc6d0\uc790\uc131(Atomicity), \ub864\ubc31(Rollback), \ub3d9\uc2dc\uc131 \uc81c\uc5b4\uc5d0 \ub300\ud55c \ucc28\uc774\ub97c \uc815\ud655\ud788 \uc774\ud574\ud574\uc57c \ud55c\ub2e4. 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