{"id":1752,"date":"2014-12-16T18:50:43","date_gmt":"2014-12-16T18:50:42","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/?p=1752"},"modified":"2022-11-12T18:08:51","modified_gmt":"2022-11-13T02:08:51","slug":"optimistic-or-pessimistic-locking-which-one-should-you-pick","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/ko\/optimistic-or-pessimistic-locking-which-one-should-you-pick\/","title":{"rendered":"\ub099\uad00\uc801 \uc7a0\uae08\uacfc \ube44\uad00\uc801 \uc7a0\uae08 - \uc5b4\ub290 \ucabd\uc744 \uc120\ud0dd\ud574\uc57c \ud560\uae4c\uc694?"},"content":{"rendered":"

Alice\uc640 Joe\uac00 \ubaa8\ub450 Couchbase Server\uc5d0\uc11c \ub3d9\uc77c\ud55c \ub370\uc774\ud130 \ud56d\ubaa9\uc744 \uc77d\uc5c8\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.\u00a0<\/span>\ub458 \ub2e4 \ub370\uc774\ud130\ub97c \ubcc0\uacbd\ud55c \ub2e4\uc74c \uc0c8 \ubc84\uc804\uc744 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \ub2e4\uc2dc \uc4f0\ub824\uace0 \uc2dc\ub3c4\ud588\uc2b5\ub2c8\ub2e4.\u00a0<\/span>\ub204\uad6c\uc758 \ubcc0\uacbd \uc0ac\ud56d\uc744 \uc800\uc7a5\ud574\uc57c \ud558\ub098\uc694? \uc568\ub9ac\uc2a4\uc758 \uac83? \uc870\uc758 \uac83? \ub458 \ub2e4? \ub458 \ub2e4? \ube44\uad00\uc801 \uc7a0\uae08\uacfc \ub099\uad00\uc801 \uc7a0\uae08\uc744 \ub458\ub7ec\uc2fc \ub17c\uc7c1\uc5d0\uc11c \uc2b9\uc790\ub97c \uacb0\uc815\ud558\ub294 \uac83\uc740 \ubc14\ub85c \uc774\ub7ec\ud55c \uc9c8\ubb38\uc785\ub2c8\ub2e4.<\/span><\/p>\n

\ud2b9\ud788 \uac1c\ubc1c\uc790\ub294 \uacf5\uc720 \ub370\uc774\ud130 \ud56d\ubaa9\uc5d0 \ub300\ud55c \uc561\uc138\uc2a4\ub97c \uc9c1\ub82c\ud654\ud558\uae30 \uc704\ud574 \uc7a0\uae08\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc5b4\ub5a4 \uc7a0\uae08 \uccb4\uacc4\uac00 <\/span>\ub97c \uc120\ud0dd\ud574\uc57c \ud558\ub098\uc694?<\/span><\/p>\n

\uc774 \ube14\ub85c\uadf8\uc5d0\uc11c\ub294 \ub099\uad00\uc801 \uc7a0\uae08\uacfc \ube44\uad00\uc801 \uc7a0\uae08\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uace0 \ub450 \uac00\uc9c0\uc758 \ucc28\uc774\uc810\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4. \ub610\ud55c<\/span>\u00a0Couchbase\uc5d0\uc11c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ub099\uad00\uc801 \ubc0f \ube44\uad00\uc801 \uc7a0\uae08 API\uc5d0 \ub300\ud574 \ub17c\uc758\ud569\ub2c8\ub2e4. <\/span>\uc11c\ubc84\ub97c \ud1b5\ud574 \ub370\uc774\ud130\uc5d0 \ub300\ud55c \ub3d9\uc2dc \uc561\uc138\uc2a4\ub97c \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n

\uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \ub099\uad00\uc801 \uc7a0\uae08\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/strong><\/h6>\n

Couchbase Server\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uacfc \uac19\uc740 \uc628\ub77c\uc778 \uc704\ud0a4\ubc31\uacfc\ub97c \uad6c\ucd95\ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4:\u00a0<\/span>\uc0ac\uc6a9\uc790\ub294 \ubb38\uc11c\ub97c \uc5c5\ub370\uc774\ud2b8\ud558\uace0 \ucd5c\uc2e0 \ubb38\uc11c\ub97c \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Alice\uac00 \uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc0ac\uc6a9\ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.\u00a0<\/span>\uc5d0 \ub300\ud55c \uae30\uc0ac\ub97c \ud3b8\uc9d1\ud558\ub824\uba74\u00a0<\/span>'\uc790\uc804\uac70'\u00a0<\/b>\ub97c \ud074\ub9ad\ud558\uc5ec \uc77c\ubd80 \uc815\ubcf4\ub97c \uc218\uc815\ud569\ub2c8\ub2e4. Alice\ub294 \uae30\uc0ac\ub97c \uc5f4\uace0\u00a0<\/span>\ud558\uc9c0\ub9cc \uc800\uc7a5\uc744 \ub204\ub974\uae30 \uc804\uc5d0 \uc8fc\uc758\uac00 \uc0b0\ub9cc\ud574\uc838 \ucc45\uc0c1\uc5d0\uc11c \uba40\uc5b4\uc9d1\ub2c8\ub2e4.\u00a0<\/span>\uadf8\ub3d9\uc548 Joe\uac00 \uc790\uc804\uac70 \uae30\uc0ac\uc5d0\uc11c \ub3d9\uc77c\ud55c \uc624\ub958\ub97c \ubc1c\uacac\ud558\uace0 \ub2e4\uc74c\uacfc \uac19\uc774 \ud558\ub824\uace0 \ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.\u00a0<\/span>\uc2e4\uc218\ub97c \uc218\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \ub099\uad00\uc801 \uc7a0\uae08\uc744 \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 Joe\ub294 \ubb38\uc11c\ub97c \ud3b8\uc9d1\ud558\uace0 \ubcc0\uacbd \ub0b4\uc6a9\uc744 \uc800\uc7a5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\u00a0<\/span>\uc568\ub9ac\uc2a4\uac00 \ub3cc\uc544\uc640\uc11c \ubcc0\uacbd \uc0ac\ud56d\uc744 \uc800\uc7a5\ud558\ub824\ub294 \uacbd\uc6b0 \uc568\ub9ac\uc2a4 \ub610\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \ub2e4\uc74c\uc744 \uc218\ud589\ud569\ub2c8\ub2e4.\u00a0<\/span>\uac00 \ucd5c\uc2e0 \uc5c5\ub370\uc774\ud2b8\ub97c \ucc98\ub9ac\ud55c \ud6c4 \uc568\ub9ac\uc2a4\uc758 \uc791\uc5c5\uc774 \ubb38\uc11c\ub97c \ubcc0\uacbd\ud558\ub3c4\ub85d \ud5c8\uc6a9\ud569\ub2c8\ub2e4. \ub099\uad00\uc801\u00a0<\/span>\uc7a0\uae08\uc740 \ub3d9\uc2dc \ud3b8\uc9d1\uc73c\ub85c \uc778\ud55c \ub370\uc774\ud130 \ucda9\ub3cc\uc774 \uac70\uc758 \ubc1c\uc0dd\ud558\uc9c0 \uc54a\ub294\ub2e4\ub294 \"\ub099\uad00\uc801\"\uc778 \uad00\uc810\uc744 \ucde8\ud569\ub2c8\ub2e4.\u00a0<\/span>\ub3d9\uc2dc \ud3b8\uc9d1\uc744 \ud5c8\uc6a9\ud558\ub294 \uac83\uc774 \ub354 \uc911\uc694\ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \ube44\uad00\uc801 \uc7a0\uae08\uc774\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/span><\/p>\n

\uc774\uc81c \ube44\uc988\ub2c8\uc2a4 \ud504\ub85c\uc138\uc2a4\uc5d0 \ub2e4\uc74c \uc911 \ud558\ub098 \uc774\uc0c1\uc5d0 \ub300\ud55c \ub3c5\uc810 \uc561\uc138\uc2a4\uac00 \ud544\uc694\ud558\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. <\/span>\ubb38\uc11c \ub610\ub294 \ubb38\uc11c \uadf8\ub798\ud504\uc785\ub2c8\ub2e4. \uc774\uc804 \uc608\uc2dc\ub97c \ucc38\uc870\ud558\uc5ec \uc568\ub9ac\uc2a4\uac00 \ub2e4\uc74c\uc744 \ud3b8\uc9d1\ud558\ub294 \uacbd\uc6b0\u00a0<\/span>\ub2e4\ub978 \uc0ac\uc6a9\uc790\uac00 \uac19\uc740 \ubb38\uc11c\ub97c \ud3b8\uc9d1\ud558\uc9c0 \ubabb\ud558\ub3c4\ub85d \uc124\uc815\ud569\ub2c8\ub2e4. Joe\uac00 \ubb38\uc11c\ub97c \uc5f4\ub824\uace0 \ud558\uba74\u00a0<\/span>\ud398\uc774\uc9c0\ub85c \uc774\ub3d9\ud558\uba74 \uc568\ub9ac\uc2a4\uac00 \uc7a0\uae08\uc744 \ud574\uc81c\ud560 \ub54c\uae4c\uc9c0 \uae30\ub2e4\ub824\uc57c \ud569\ub2c8\ub2e4.<\/span><\/p>\n

\ube44\uad00\uc801 \uc7a0\uae08\uc744 \uc0ac\uc6a9\ud558\uba74 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \ubb38\uc11c\uc5d0 \uba85\uc2dc\uc801\uc73c\ub85c \uc7a0\uae08\uc744 \uc124\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.\u00a0<\/span>\ub294 \uc0ac\uc6a9\uc790\uc758 \ub3c5\uc810\uc801\uc778 \uc561\uc138\uc2a4\ub97c \ubcf4\uc7a5\ud569\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uac00 \ubb38\uc11c \uc561\uc138\uc2a4\ub97c \uc644\ub8cc\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc7a0\uae08\uc744 \uc124\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\u00a0<\/span>\ub97c \uc218\ub3d9\uc73c\ub85c \uc81c\uac70\ud558\uac70\ub098 \uc2dc\uac04 \ucd08\uacfc\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc81c\uac70\ud569\ub2c8\ub2e4.<\/span><\/p>\n


\n\uadf8\ub807\ub2e4\uba74 \uc5b4\ub5a4 \uac83\uc744 \uc120\ud0dd\ud574\uc57c \ud560\uae4c\uc694?<\/span><\/p>\n

\uc815\ub2f5\uc740 \uc5c6\uc2b5\ub2c8\ub2e4.\u00a0<\/b>\ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4.<\/span>. \uc7a0\uae08\uc744 \uc120\ud0dd\ud574\uc57c \ud569\ub2c8\ub2e4.\u00a0<\/b>\uccb4\uacc4\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/span><\/b><\/p>\n

\ubb38\uc11c\uc5d0 \ub300\ud55c \uacbd\ud569\uc774 \uc2ec\ud560 \uac83\uc73c\ub85c \uc608\uc0c1\ud558\uc9c0 \uc54a\ub294 \ud55c, \ub099\uad00\uc801\uc73c\ub85c \uc7a0\uadf8\ub294 \uac83\uc774 \ud6e8\uc52c \ub354 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4.\u00a0<\/span>\ube44\uad00\uc801 \uc7a0\uae08\ubcf4\ub2e4 \uc624\ubc84 \ud5e4\ub4dc\uac00 \uc801\uc2b5\ub2c8\ub2e4. \ud544\uc694\ud55c \ud56d\ubaa9\uc744 \uac00\uc838 \uc640\uc11c \ube60\ub974\uac8c \uc5c5\ub370\uc774\ud2b8\ud558\uace0 \uc2dc\ub3c4\ud558\uc2ed\uc2dc\uc624.<\/span>o \uc801\uc6a9\ud569\ub2c8\ub2e4. \uc2dc\uc2a4\ud15c \ub0b4 \ub2e4\ub978 \ud589\uc704\uc790\uac00 \uba3c\uc800 \uc801\uc6a9\ud588\ub2e4\uba74 \uc131\uacf5\ud560 \ub54c\uae4c\uc9c0 \ub2e4\uc2dc \uc2dc\ub3c4\ud558\uba74 \ub429\ub2c8\ub2e4.<\/span><\/p>\n

\ube44\uad00\uc801 \uc7a0\uae08\uc744 \uc0ac\uc6a9\ud558\uba74 \ud2b9\uc815 \ud56d\ubaa9\uc5d0 \ub3c5\uc810\uc801\uc73c\ub85c \uc561\uc138\uc2a4\ud560 \uc218 \uc788\uc73c\uba70 \ub2e4\ub978 \uc2a4\ub808\ub4dc\ub294 \uc561\uc138\uc2a4\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.\u00a0<\/span>\ud56d\ubaa9\uc774 \uc7a0\uaca8 \uc788\ub294 \ub3d9\uc548\uc5d0\ub294 \ud56d\ubaa9\uc5d0 \uc561\uc138\uc2a4\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc2e4\ud328\ud560 \ub54c\ub294 \ubc18\ub4dc\uc2dc \uc7a0\uae08\uc744 \ud574\uc81c\ud574\uc57c \ud569\ub2c8\ub2e4. \uc2dc\ub9ac\uc5bc \uac1c\uccb4\ub97c \uac00\uc9c0\uace0 \uc788\ub294\ub370 \uc6b0\uc720 \uac1c\uccb4\ub97c \uc5bb\uc744 \ub54c\uae4c\uc9c0 \ud3ec\uae30\ud558\uc9c0 \uc54a\ub294\ub2e4\uace0 \uc0c1\uc0c1\ud574 \ubcf4\uc138\uc694. \ud558\uc9c0\ub9cc \uc5ec\ub7ec\ubd84\uc740 \uc6b0\uc720 \ubb3c\uccb4\ub97c \uac00\uc9c0\uace0 \uc788\uace0 \uc2dc\ub9ac\uc5bc \ubb3c\uccb4\ub97c \uc5bb\uc744 \ub54c\uae4c\uc9c0 \ud3ec\uae30\ud558\uc9c0 \uc54a\uc744 \uac83\uc785\ub2c8\ub2e4. \ud0c0\uc784\uc544\uc6c3\uc740 \uad50\ucc29 \uc0c1\ud0dc\ub97c \uae68\uac70\ub098 \uc7a0\uae08\uc744 \ud574\uc81c\ud558\uc9c0 \uc54a\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\ub97c \ucc98\ub9ac\ud558\ub294 \ub370 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.\u00a0<\/span><\/p>\n

\uac04\uc18c\ud654\ub97c \uc704\ud574 \uc0ac\uc6a9\uc790\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc804\uccb4\uc5d0\uc11c \ub3d9\uc77c\ud55c \uc7a0\uae08 \uc804\ub7b5\uc744 \uc120\ud0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\u00a0<\/span>\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc804\ubc18\uc758 \ubaa8\ub4e0 \ub2e4\ub978 \uac1c\uccb4\uc5d0 \ub300\ud55c \uc561\uc138\uc2a4 \uc694\uad6c \uc0ac\ud56d\uc774 \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0 \uc798 \uc791\ub3d9\ud569\ub2c8\ub2e4.\u00a0<\/span>\ub3d9\uc77c\ud558\ub2e4\uace0 \uc0dd\uac01\ud558\uc9c0\ub9cc \uc2e4\uc81c\ub85c\ub294 \uadf8\ub807\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uac1d\uccb4\ub9c8\ub2e4 \uc561\uc138\uc2a4 \uad8c\ud55c\uc774 \ub2e4\ub985\ub2c8\ub2e4.\u00a0<\/span>\uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud574\uc57c \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc18c\uc15c \uac8c\uc784\uc758 \uacbd\uc6b0 \ub2e4\uc74c\uacfc \uac19\uc740 \uc694\uad6c \uc0ac\ud56d\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n

1. \uac8c\uc784 \ud50c\ub808\uc774 \uc911\uc5d0 \uce90\ub9ad\ud130 \ubc0f \ud50c\ub808\uc774\uc5b4 \uc778\ubca4\ud1a0\ub9ac \uc815\ubcf4\uc5d0 \ub9ce\uc774 \uc561\uc138\uc2a4\ud569\ub2c8\ub2e4,<\/span><\/p>\n

\ube60\ub978 \uc77d\uae30-\uc4f0\uae30 \uc561\uc138\uc2a4\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uccab \ubc88\uc9f8 \uc120\ud0dd - \ub099\uad00\uc801 \uc7a0\uae08\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ub2e4\uc74c \uc120\ud0dd -<\/span><\/p>\n

\ube44\uad00\uc801 \uc7a0\uae08<\/span><\/p>\n

2. \ud50c\ub808\uc774\uc5b4 \uacc4\uc815 \ubc0f \uae30\ubcf8 \uc124\uc815\uc740 \ud50c\ub808\uc774\uc5b4 \ub85c\uadf8\uc778 \uc911 \ub610\ub294 \uac8c\uc784 \uc2dc\uc791 \uc2dc \uc77d\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n

\ud558\uc9c0\ub9cc \uc790\uc8fc \uc5c5\ub370\uc774\ud2b8\ub418\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4. \ub099\uad00\uc801 \uc7a0\uae08\uc740 \uc5ec\uae30\uc5d0\uc11c\ub3c4 \uc798 \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/span><\/p>\n

\uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \ube44\uad00\uc801 \uc7a0\uae08 \uc5bb\uae30<\/span><\/p>\n

\uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \uc7a0\uae08\uc744 \uc5bb\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c \ub2e8\uacc4\ub85c \uad6c\uc131\ub429\ub2c8\ub2e4:<\/span><\/p>\n

    \n
  1. \uac00\uc838\uc624\uae30 \ubc0f \uc7a0\uae08 API\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc9c0\uc815\ub41c \ud0a4\uc758 \uac12\uc744 \uac80\uc0c9\ud558\uace0 \ud574\ub2f9 \ud0a4\ub97c \uc7a0\uae09\ub2c8\ub2e4.<\/span><\/li>\n
  2. \uc774\uc81c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \ubb38\uc11c\ub97c \ub3c5\uc810\uc801\uc73c\ub85c \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<\/ol>\n

    \uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \ub099\uad00\uc801 \uc7a0\uae08 \uc5bb\uae30<\/span><\/p>\n

    \uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \uc7a0\uae08\uc744 \uc5bb\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c \ub2e8\uacc4\ub85c \uad6c\uc131\ub429\ub2c8\ub2e4:<\/span><\/p>\n

      \n
    1. CAS(\ud655\uc778 \ubc0f \uc124\uc815) API\ub97c \uc0ac\uc6a9\ud558\uc5ec CAS \ub9ac\ube44\uc804 \ubc88\ud638 \uac80\uc0c9\ud558\uae30<\/span><\/li>\n<\/ol>\n
      \uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uc11c\ubc84\uc5d0\uc11c \uc7a0\uae08 \ud574\uc81c\ud558\uae30<\/h6>\n

      \uc7a0\uae08\uc744 \uc218\ub3d9\uc73c\ub85c \ud574\uc81c\ud558\ub824\uba74 \ub2e4\uc74c \ub2e8\uacc4\ub97c \uc218\ud589\ud558\uc138\uc694.<\/span><\/span>:<\/span><\/p>\n

        \n
      1. CAS\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac12\uc744 \uc218\uc815\ud558\uace0 \uc7a0\uae08\uc744 \ud574\uc81c\ud569\ub2c8\ub2e4.<\/span><\/li>\n<\/ol>\n

        CAS\uc758 \ube44\ud558\uc778\ub4dc \uc2a4\ud1a0\ub9ac<\/span><\/p>\n

        CAS \uc791\uc5c5\uc740 \ubcf4\ub2e4 \uace0\uae09 \ub3d9\uc2dc\uc131 \uc81c\uc5b4 \uba54\ucee4\ub2c8\uc998\uc744 \uad6c\ucd95\ud558\ub294 \ub370 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uac04\ub2e8\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4. CAS\ub294 \uac1d\uccb4\ub97c \ucc98\uc74c \uc77d\uc740 \uc2dc\uac04\uacfc \uc800\uc7a5\uc744 \uc2dc\ub3c4\ud55c \uc2dc\uac04 \uc0ac\uc774\uc5d0 \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0 \uc758\ud574 \uac1d\uccb4\uac00 \uc5c5\ub370\uc774\ud2b8\ub418\uc5c8\ub294\uc9c0 \uc5ec\ubd80\ub97c \ud655\uc778\ud569\ub2c8\ub2e4. \ub2e4\ub978 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0 \uc758\ud574 \uac1d\uccb4\uac00 \uc218\uc815\ub41c \uacbd\uc6b0 \uc624\ub958\uac00 \ubc1c\uc0dd\ud558\uace0 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uac12\uc744 \ub2e4\uc2dc \uc77d\uace0 \uc791\uc5c5\uc744 \ub2e4\uc2dc \uc2dc\ub3c4\ud574\uc57c \ud569\ub2c8\ub2e4. \uac1d\uccb4\uc758 \uacbd\ud569\uc774 \uc2ec\ud558\uc9c0 \uc54a\uace0 \ub370\uc774\ud130\uc758 \ubcc0\ud658\uc774 \ubb34\ud6a8\ud654\ub418\uc5b4 \uc791\uc5c5 \ub0ad\ube44 \uc5c6\uc774 \uc27d\uac8c \uc791\uc5c5\uc744 \uc7ac\uc2dc\ub3c4\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0, \ub099\uad00\uc801 \uc7a0\uae08\uc740 \ud3c9\uade0\uc801\uc778 \uacbd\uc6b0 \ub192\uc740 \uc131\ub2a5\uc744 \uc81c\uacf5\ud558\ub294 \uc88b\uc740 \uc194\ub8e8\uc158\uc785\ub2c8\ub2e4. <\/span><\/p>\n

        CAS\uc640 \uc0c1\ud638 \uc791\uc6a9\ud558\ub294 \uc77c\ubc18\uc801\uc778 \ubc29\ubc95\uc740 \ucee4\ubba4\ub2c8\ud2f0\uc5d0\uc11c \uac1c\ubc1c\ud55c \ub2e4\uc74c\uacfc \uac19\uc774 CAS \ub8e8\ud504\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. <\/span>\uba64\uce90\uc2dc\ub4dc \ud074\ub77c\uc774\uc5b8\ud2b8 \uc774\ub3d9<\/span><\/a>.<\/span><\/p>\n

        \uc608\ub97c \ub4e4\uc5b4 <\/span>\uc544\ub798 \uc0c1\ud638\uc791\uc6a9 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uacfc \uac19\uc774 3\uac1c\uc758 \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \uc788\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc138 \ud074\ub77c\uc774\uc5b8\ud2b8 \ubaa8\ub450 CAS\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac1c\uccb4 X\ub97c \uc5c5\ub370\uc774\ud2b8\ud558\ub824\uace0 \uc2dc\ub3c4\ud558\uba70, \uac01 \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \ud55c \ubc88\uc5d0 \ud558\ub098\uc529 \uc5c5\ub370\uc774\ud2b8\uc5d0 \uc131\uacf5\ud569\ub2c8\ub2e4.<\/span><\/p>\n

        \uc7a0\uae08\uc744 \ud574\uc81c\ud558\uc9c0 \uc54a\uc73c\uc168\uc73c\ub2c8 \uce74\uc6b0\uce58\ubca0\uc774\uc2a4\uac00 \ub300\uc2e0 \ud574\uc81c\ud574\ub4dc\ub9bd\ub2c8\ub2e4.<\/span><\/p>\n

        \uac00\uc838\uc624\uae30 \ubc0f \uc7a0\uae08 \uc791\uc5c5\uc744 \uc218\ud589\ud560 \ub54c \uc7a0\uae08\uc758 \ub9cc\ub8cc \uc2dc\uac04\uc744 \ub9e4\uac1c\ubcc0\uc218\ub85c \uc81c\uacf5\ud569\ub2c8\ub2e4. \ud0a4\ub97c \uc7a0\uae00 \uc218 \uc788\ub294 \uae30\ubcf8 \uc2dc\uac04\uc740 15\ucd08\uc785\ub2c8\ub2e4. 15\ucd08\uac00 \uc9c0\ub098\ub3c4 \uc218\ub3d9\uc73c\ub85c \uc7a0\uae08\uc744 \ud574\uc81c\ud558\uc9c0 \uc54a\uc73c\uba74 \uce74\uc6b0\uce58\ubca0\uc774\uc2a4\uc5d0\uc11c \uc790\ub3d9\uc73c\ub85c \uc7a0\uae08\uc744 \ud574\uc81c\ud569\ub2c8\ub2e4.<\/p>\n

        \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ube44\uad00\uc801 \ubc0f \ub099\uad00\uc801 \uc7a0\uae08\uc5d0 \ub300\ud55c \ucd5c\uc885 \uc0dd\uac01<\/b><\/span><\/p>\n

        \ub099\uad00\uc801 \uc7a0\uae08\uc774 \ubaa8\ub4e0 \uc0c1\ud669\uc5d0\uc11c \ucd5c\uc120\uc758 \ud574\uacb0\ucc45\uc740 \uc544\ub2d0 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub099\uad00\uc801 \uc7a0\uae08\uc73c\ub85c \uc798 \uc791\ub3d9\ud558\ub294 \uc0ac\uc6a9 \uc0ac\ub840\ub3c4 \uc788\uc9c0\ub9cc, \ube44\uad00\uc801 \uc7a0\uae08\uacfc \uac19\uc740 \ub354 \uc5c4\uaca9\ud55c \ubc29\uc2dd\uc774 \ud544\uc694\ud55c \uacbd\uc6b0\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

        \uc7a0\uae08 \uacbd\ud569\uc774 \ubc1c\uc0dd\ud558\uba74 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc2a4\ub808\ub4dc\uac00 \uc7a0\uae08\uc744 \uc720\uc9c0\ud558\ub2e4\uac00 OS\uc5d0 \uc758\ud574 \uc2a4\ucf00\uc904\uc774 \ud574\uc81c\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\uba74 \uc774 \uc7a0\uae08\uc744 \ud68d\ub4dd\ud558\ub824\ub294 \ubaa8\ub4e0 \uc2a4\ub808\ub4dc\uac00 \ucc28\ub2e8\ub429\ub2c8\ub2e4. \ud55c \uac00\uc9c0 \uc635\uc158\uc740 \uc6d0\uc790 \uc5f0\uc0b0\uc744 \uc0ac\uc6a9\ud558\uc5ec \uac00\ub2a5\ud55c \uacbd\uc6b0 \uc7a0\uae08\uc744 \uc644\uc804\ud788 \ud53c\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c API\ub294 \uacbd\ud569\uc774 \uc2ec\ud55c \ub370\uc774\ud130\uc5d0 \ub9e4\uc6b0 \uc720\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

        \uadf8\ub7ec\ub098 \uc815\ub9d0 \uc7a0\uae08\uc774 \ud544\uc694\ud558\uace0 \ub099\uad00\uc801 \uc7a0\uae08\uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc0ac\uc6a9 \uc0ac\ub840 \ub300\ubd80\ubd84\uc744 \ucee4\ubc84\ud55c\ub2e4\uace0 \uc0dd\uac01\ud55c\ub2e4\uba74, Couchbase Server\uc5d0\uc11c CAS\ub97c \uc0ac\uc6a9\ud558\ub294 \ub099\uad00\uc801 \uc7a0\uae08\uc740 \uad6c\ud604\ud558\uae30\uac00 \ub9e4\uc6b0 \uc26c\uc6b0\ubbc0\ub85c \uc2dc\ub3c4\ud558\uc9c0 \uc54a\uc744 \uc774\uc720\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"

        Assume that Alice and Joe both read the same data item from Couchbase Server, then they\u00a0both changed the data, and then both tried to write the new versions back to the database.\u00a0Whose changes should be saved? Alice\u2019s? Joe\u2019s? Neither? A […]<\/p>","protected":false},"author":4,"featured_media":13873,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"ppma_author":[8972],"class_list":["post-1752","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"\nOptimistic vs Pessimistic Locking: What Are the Differences?<\/title>\n<meta name=\"description\" content=\"This blog page explains optimistic locking vs. pessimistic locking and the differences between the two, including locking APIs in Couchbase Server.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.couchbase.com\/blog\/ko\/optimistic-or-pessimistic-locking-which-one-should-you-pick\/\" \/>\n<meta property=\"og:locale\" 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