{"id":9765,"date":"2021-08-10T00:00:34","date_gmt":"2021-08-10T07:00:34","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/?p=9765"},"modified":"2025-06-13T18:43:33","modified_gmt":"2025-06-14T01:43:33","slug":"cost-based-optimization-with-couchbase-json-database","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/ko\/cost-based-optimization-with-couchbase-json-database\/","title":{"rendered":"\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ud1b5\ud574 \ucffc\ub9ac \ud6a8\uc728\uc131 \ud5a5\uc0c1\ud558\uae30"},"content":{"rendered":"<p><strong>\ubaa8\ub4e0 \uc885\ub958\uc758 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc0ac\uc6a9\uc790\ub294 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uae30\ub300\ud558\uac8c \ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/strong> \ub97c \uc785\ub825\ud558\uc138\uc694.<\/p>\n<p>\uc774\ub294 \ubaa8\ub4e0 \uae30\uc874 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4(RDBMS)\uc758 \ud45c\uc900 \uae30\ub2a5\uc774\uc9c0\ub9cc, \uc544\uc9c1\uae4c\uc9c0 NoSQL \ubb38\uc11c \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc704\ud55c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c(CBO)\ub294 \uc5c6\uc5c8\uc2b5\ub2c8\ub2e4. \uc989, \uc9c0\uae08\uae4c\uc9c0\ub294 \ub9d0\uc774\uc8e0.<\/p>\n<p>\uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \ucffc\ub9ac\uc5d0 \ub300\ud55c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub294 \uce74\uc6b0\uce58\ubca0\uc774\uc2a4 6.5\uc758 \uac1c\ubc1c\uc790 \ud504\ub9ac\ubdf0\ub85c \ucd9c\uc2dc\ub418\uc5c8\uc2b5\ub2c8\ub2e4. <a href=\"https:\/\/www.couchbase.com\/blog\/ko\/couchbase-server-7-0-release\/?ref=blog\" target=\"_blank\" rel=\"noopener\">\uc774\uc81c \uce74\uc6b0\uce58\ubca0\uc774\uc2a4 7.0\uacfc \ud568\uaed8 \uc815\uc2dd \ubc84\uc804\uc73c\ub85c \ucd9c\uc2dc\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/a>.<\/p>\n<p>Couchbase Server 7.0\uc758 \uc0c8\ub85c\uc6b4 CBO \uae30\ub2a5\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uae30\uc874 \ubc29\uc2dd: \uae30\uc874 \ubc29\uc2dd: \uaddc\uce59 \uae30\ubc18 \ucd5c\uc801\ud654<\/h2>\n<p>\ub370\uc774\ud130\ubca0\uc774\uc2a4 \ucffc\ub9ac \ucd5c\uc801\ud654\uc5d0 \ub300\ud55c \uc774\uc804 \uc811\uadfc \ubc29\uc2dd\uc778 \uaddc\uce59 \uae30\ubc18 \ucd5c\uc801\ud654(RBO)\ub97c \uc5b8\uae09\ud558\uc9c0 \uc54a\uace0 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ub17c\ud558\ub294 \uac83\uc740 \ubd88\uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n<p>\uaddc\uce59 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\uba74 \ucffc\ub9ac \ucd5c\uc801\ud654 \ub3c4\uad6c\ub294 \ub2e4\uc74c\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc744 \uace0\ub824\ud569\ub2c8\ub2e4. <em>any<\/em> \uc778\ub371\uc2a4\uc5d0 \ucffc\ub9ac \uacb0\uacfc\ub97c \uac80\uc0c9\ud560 \uc218 \uc788\ub294 \uacbd\ub85c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \ucd5c\uc801\ud654 \ub3c4\uad6c\uc5d0 \ucffc\ub9ac\ub97c \ucc98\ub9ac\ud560 \uacbd\ub85c\uac00 \ub450 \uac1c \uc774\uc0c1 \uc81c\uacf5\ub420 \ub54c, \uc989 \ucffc\ub9ac\uac00 \uc5ec\ub7ec \uc778\ub371\uc2a4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc744 \ub54c \ucd5c\uc801\ud654 \ub3c4\uad6c\ub294 <em>\ubaa8\ub450<\/em> \uc778\ub371\uc2a4.<\/p>\n<p>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\uba74 \ucffc\ub9ac \ucd5c\uc801\ud654 \ub3c4\uad6c\uac00 \uac01 \uc778\ub371\uc2a4 \uc0ac\uc6a9 \ube44\uc6a9\uc744 \uacc4\uc0b0\ud55c \ub2e4\uc74c \uac00\uc7a5 \ub0ae\uc740 \ube44\uc6a9\uc73c\ub85c \uc2e4\ud589 \uacc4\ud68d\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4.<\/p>\n<h2>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\uba74 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ucffc\ub9ac \ucd5c\uc801\ud654 \ub3c4\uad6c\uac00 \ucffc\ub9ac\ub97c \ucc98\ub9ac\ud558\ub294 \ub370 \uac00\uc7a5 \uc801\ud569\ud55c(\uac00\uc7a5 \ube44\uc6a9\uc774 \uc801\uac8c \ub4dc\ub294) \uacc4\ud68d\uc744 \uc120\ud0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc774\ub294 \ucffc\ub9ac\uc5d0 \ub458 \uc774\uc0c1\uc758 \uc7a0\uc7ac\uc801 \uc2e4\ud589 \uacbd\ub85c, \uc989 \ub458 \uc774\uc0c1\uc758 \uc815\uaddc\ud654\ub41c \uc778\ub371\uc2a4\uac00 \uc788\ub294 \uacbd\uc6b0 \uac00\uc7a5 \uc911\uc694\ud569\ub2c8\ub2e4. \uac01 \ucffc\ub9ac \uacc4\ud68d \uacbd\ub85c\uc5d0\ub294 \ucffc\ub9ac\uac00 \uc218\ud589\ud574\uc57c \ud558\ub294 \ubaa8\ub4e0 \uc791\uc5c5\uc5d0 \ub300\ud55c \ucd1d \ube44\uc6a9\uc774 \ud560\ub2f9\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ube44\uc6a9\uc740 \ud2b9\ud788 \uc9c0\uc815\ub41c \uc220\uc5b4\uc758 \uc120\ud0dd\uc131\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \uc220\uc5b4\uc758 \uc120\ud0dd\uc131 \uac12\uc5d0 \ub3c4\ub2ec\ud558\ub824\uba74 \uc220\uc5b4 \ud544\ub4dc\uc758 \ud1b5\uacc4\uac00 \ubbf8\ub9ac \uacc4\uc0b0\ub418\uc5b4 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p>\ube44\uc6a9 \uac12\uc740 \ud1b5\uacc4 \uacc4\uc0b0\uc758 \uc784\uc758 \ub2e8\uc704\ub85c, \ub9ac\uc18c\uc2a4 \ube44\uc6a9\uc774\ub098 CPU \uc0ac\uc6a9\ub7c9\uacfc \ub3d9\uc77c\ud558\uc9c0 \uc54a\ub2e4\ub294 \uc810\uc5d0 \uc720\uc758\ud558\uc138\uc694.<\/p>\n<h2>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub300 \uaddc\uce59 \uae30\ubc18 \ucd5c\uc801\ud654<\/h2>\n<p>\ube44\uc6a9 \uae30\ubc18 \ucffc\ub9ac \ucd5c\uc801\ud654\ub294 \ucd5c\uc801\ud654 \ub3c4\uad6c\uc5d0 \ub450 \uac00\uc9c0 \uc774\uc0c1\uc758 \uc635\uc158\uc774 \uc81c\uc2dc\ub420 \ub54c \ud56d\uc0c1 \ub354 \ub098\uc740 \uc2e4\ud589 \uacbd\ub85c\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uacc4\uc0b0\ub41c \ud1b5\uacc4\ub97c \ud1b5\ud574 \ucd5c\uc801\ud654 \ub3c4\uad6c\ub294 \ub370\uc774\ud130 \ubd84\ud3ec\uc5d0 \ub300\ud55c \uc9c0\uc2dd\uacfc \uadf8\uc5d0 \ub530\ub978 \ud55c \ucffc\ub9ac \uacc4\ud68d\uacfc \ub2e4\ub978 \ucffc\ub9ac \uacc4\ud68d\uc758 \ud6a8\uc728\uc131\uc744 \ud30c\uc545\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc608\ub97c \ub4e4\uc5b4 \ub2e4\uc74c\uacfc \uac19\uc774 \uc0c1\uc0c1\ud574 \ubcf4\uc138\uc694. <a href=\"https:\/\/www.couchbase.com\/blog\/ko\/scopes-and-collections-for-modern-multi-tenant-applications-couchbase-7-0\/?ref=blog\" target=\"_blank\" rel=\"noopener\">\uce74\uc6b0\uce58\ubca0\uc774\uc2a4 \uceec\ub809\uc158<\/a> \uc5d0 \uace0\uac1d \uc815\ubcf4\uc640 \uc8fc\uc18c\uac00 \ud3ec\ud568\ub41c \uc778\ub371\uc2a4\uac00 \uc788\uc2b5\ub2c8\ub2e4. <code>ix1(\uc6b0\ud3b8\ubc88\ud638)<\/code> \uadf8\ub9ac\uace0 <code>ix2(\ub3c4\uc2dc)<\/code>. \ud1b5\uacc4\uc801\uc73c\ub85c \ubbf8\uad6d\uc5d0\ub294 \ub3c4\uc2dc \uc218\ubcf4\ub2e4 \uc6b0\ud3b8 \ubc88\ud638\uac00 \ub354 \ub9ce\uc9c0\ub9cc \uadf8\ub807\ub2e4\uace0 \ud574\uc11c \ubc18\ub4dc\uc2dc <code>ix1(\uc6b0\ud3b8\ubc88\ud638)<\/code> \uc778\ub371\uc2a4\uac00 \ub354 \ub0ae\uc740 \ube44\uc6a9(\ub530\ub77c\uc11c \ub354 \ub098\uc740 \uc131\ub2a5)\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. <code>ix2(\ub3c4\uc2dc)<\/code> \uc0c9\uc778. \uc65c \uadf8\ub7f4\uae4c\uc694? \uc2dc\uc2a4\ud15c \ub0b4 \uace0\uac1d\uc774 \ubbf8\uad6d\uc758 \ubaa8\ub4e0 \ub3c4\uc2dc\uc640 \uc6b0\ud3b8 \ubc88\ud638\uc5d0 \uace0\ub974\uac8c \ubd84\ud3ec\ub418\uc5b4 \uc788\ub294\uc9c0 \uc544\uc9c1 \uc54c \uc218 \uc5c6\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uadf8\ub807\uc9c0 \uc54a\uc744 \uac00\ub2a5\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc774 \uc2dc\ub098\ub9ac\uc624\uc5d0\uc11c\ub294 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c\uac00 \uc0ac\uc804\uc5d0 \uc218\uc9d1\ud55c \ud1b5\uacc4\uac00 \ub7f0\ud0c0\uc784\uc5d0 \uac00\uc7a5 \ub0ae\uc740 \ube44\uc6a9\uc758 \ucffc\ub9ac \uacbd\ub85c\ub97c \uacb0\uc815\ud558\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p>\n<p>\uaddc\uce59 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\uba74 \ucffc\ub9ac\uc5d0 \ub3c4\uc2dc\uc640 \uc6b0\ud3b8\ubc88\ud638 \uc220\uc5b4\uac00 \ubaa8\ub450 \uc788\ub294 \uacbd\uc6b0 \ucffc\ub9ac \ucd5c\uc801\ud654 \ub3c4\uad6c\ub294 \uad50\ucc28 \uc2a4\uce94\uc744 \ud1b5\ud574 \ub450 \uc778\ub371\uc2a4\ub97c \ubaa8\ub450 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 CBO\ub294 \uceec\ub809\uc158 \ub0b4\uc758 \ub370\uc774\ud130\ub97c \uae30\uc900\uc73c\ub85c \ube44\uc6a9\uc774 \uac00\uc7a5 \ub0ae\uc740 \uc778\ub371\uc2a4 \ud558\ub098\ub9cc \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<h2>Couchbase\uc5d0\uc11c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ud65c\uc131\ud654\ud558\ub294 \ubc29\ubc95<\/h2>\n<p>Couchbase Server 7.0\uc5d0\uc11c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\uae30 \uc704\ud574 \uc218\ud589\ud574\uc57c \ud558\ub294 \ub450 \uac00\uc9c0 \uc911\uc694\ud55c \ub2e8\uacc4\uac00 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<p><strong>1. CBO \uae30\ub2a5 \ud65c\uc131\ud654<\/strong><\/p>\n<p>\ud604\uc7ac \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c\ub294 Couchbase 7.0\uc5d0\uc11c \uae30\ubcf8\uc801\uc73c\ub85c \ud65c\uc131\ud654\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uadf8\ub7ec\ub098 \uc774 \uae30\ub2a5\uc744 \ube44\ud65c\uc131\ud654\ud558\ub824\uba74 <a href=\"https:\/\/www.couchbase.com\/blog\/ko\/products\/n1ql\/?ref=blog\" target=\"_blank\" rel=\"noopener\">N1QL<\/a> \uc124\uc815-&gt;\ucffc\ub9ac \uc124\uc815\uc5d0\uc11c \uae30\ub2a5 \uc81c\uc5b4 \uac12\uc744 \uc120\ud0dd\ud569\ub2c8\ub2e4. \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\ub824\ub294 \uacbd\uc6b0 \uc774 \uae30\ub2a5\uc774 \ud65c\uc131\ud654\ub418\uc5b4 \uc788\ub294\uc9c0 \ud655\uc778\ud558\uc138\uc694.<\/p>\n<p><strong>2. \ud1b5\uacc4 \uc218\uc9d1<\/strong><\/p>\n<p>\ud074\ub7ec\uc2a4\ud130\uc5d0\uc11c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c\ub97c \uc0ac\uc6a9\ud558\ub3c4\ub85d \uc124\uc815\ud558\ub294 \uac83 \uc678\uc5d0\ub3c4 \ucffc\ub9ac\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc778\ub371\uc2a4\uc758 \uae30\ubcf8 \ud544\ub4dc\uc5d0 \ub300\ud55c \ud1b5\uacc4\ub3c4 \uc218\uc9d1\ud574\uc57c \ud569\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \uc774\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud55c \uc0d8\ud50c \ucffc\ub9ac\uc785\ub2c8\ub2e4:<\/p>\n<pre class=\"lang:default decode:true\">UPDATE STATISTICS FOR&lt;keyspace&gt; (&lt;index_expr1&gt;,..) \r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uc608\ub97c \ub4e4\uc5b4 <code>\uc5ec\ud589 \uc0d8\ud50c<\/code> \ub370\uc774\ud130 \uc9d1\ud569\uc744 \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 \uc704\uc758 \ucffc\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\uc2dc\ub429\ub2c8\ub2e4:<\/p>\n<pre>UPDATE STATISTICS FOR `travel-sample`._default.hotel (city);\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uc778\ub371\uc2a4 \uc774\ub984\uc5d0 \ub530\ub77c \ud1b5\uacc4\ub97c \uc218\uc9d1\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<pre>UPDATE STATISTICS FOR `travel-sample`._default.route.def_route_schedule_utc;\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\ube44\uc6a9 \uae30\ubc18 \uc635\ud2f0\ub9c8\uc774\uc800\ub97c \ube44\ud65c\uc131\ud654\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. <code>cbo_flag<\/code> \ub97c \uc0ac\uc6a9\ud558\uc5ec \ud1b5\uacc4\ub97c \uc0ad\uc81c\ud558\uac70\ub098, API\uc5d0\uc11c <code>\ud1b5\uacc4 \uc5c5\ub370\uc774\ud2b8  \uc0ad\uc81c (,..)<\/code>.<\/p>\n<h2>CBO \uc2dc\uc2a4\ud15c \ubc84\ud0b7<\/h2>\n<p>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\ub3c4\ub85d \uc124\uc815\ud558\uace0 \ud1b5\uacc4\ub97c \uc218\uc9d1\ud558\uba74 \ud074\ub7ec\uc2a4\ud130\uc5d0 \ub2e4\uc74c\uacfc \uac19\uc740 \ucd94\uac00 \ubc84\ud0b7\uc774 \ud45c\uc2dc\ub429\ub2c8\ub2e4. <code>n1ql_system_bucket.n1ql_system_scope.n1ql_cbo_stat<\/code>. \uc774 \ubc84\ud0b7\uc5d0 \uc9c1\uc811 \uc561\uc138\uc2a4\ud560 \uc218 \uc788\ub294 \uad8c\ud55c\uc740 \uc2dc\uc2a4\ud15c \uad00\ub9ac\uc790\ub85c \uc81c\ud55c\ub429\ub2c8\ub2e4.<\/p>\n<p>\uc0ac\uc6a9 <code>\ud1b5\uacc4 \uc5c5\ub370\uc774\ud2b8<\/code> \uba85\ub839\uc73c\ub85c \ubc84\ud0b7\uc5d0 \ud1b5\uacc4\ub97c \ucd94\uac00\ud558\uac70\ub098 \ud1b5\uacc4\ub97c \uc0ad\uc81c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <code>\uc5d0 \ub300\ud55c \ud1b5\uacc4 \uc5c5\ub370\uc774\ud2b8 \uc0ad\uc81c<\/code>.<\/p>\n<h2>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c\uc758 \uc2e4\uc81c \uc0ac\uc6a9<\/h2>\n<p>Couchbase 7.0\uc5d0\uc11c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\uac00 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub294\uc9c0 \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. <code>`\uc5ec\ud589-\uc0d8\ud50c`<\/code> \ub370\uc774\ud130 \uc9d1\ud569\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ud1b5\ud55c \uc778\ub371\uc2a4 \uc120\ud0dd \uac1c\uc120<\/h3>\n<p>\uc5d0 \ub300\ud574 \ub450 \uac1c\uc758 \uc778\ub371\uc2a4\ub97c \uc815\uc758\ud588\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. <code>`travel-sample`._default.airport<\/code> \uceec\ub809\uc158.<\/p>\n<pre class=\"lang:default decode:true\">CREATE INDEX def_airport_city_country ON airport(city,country); \r\nCREATE INDEX def_airport_faa ON airport(faa);\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uc544\ub798\uc5d0 \ucffc\ub9ac\uac00 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<pre class=\"lang:default decode:true\">SELECT * FROM airport WHERE city = \"New York\" AND faa = \"JFK\";\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uc704\uc758 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc558\ub2e4\uba74, \uc704 \ucffc\ub9ac\uc5d0 \ub300\ud55c \uaddc\uce59 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c \uc2e4\ud589 \uacc4\ud68d\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9766\" src=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM.png\" alt=\"rules-based optimization execution plan for Couchbase N1QL query\" width=\"2206\" height=\"478\" srcset=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM.png 2206w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-300x65.png 300w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-1024x222.png 1024w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-768x166.png 768w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-1536x333.png 1536w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-2048x444.png 2048w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-20x4.png 20w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.49.53-PM-1320x286.png 1320w\" sizes=\"auto, (max-width: 2206px) 100vw, 2206px\" \/><\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\ucffc\ub9ac \uc220\uc5b4\uac00 \uc591\ucabd \ubaa8\ub450\uc5d0 \uc788\uae30 \ub54c\ubb38\uc5d0 <code>\ub3c4\uc2dc<\/code> \uadf8\ub9ac\uace0 <code>faa<\/code> \ud544\ub4dc\ub97c \uc0ac\uc6a9\ud558\uba74 \uad50\ucc28 \uc2a4\uce94\uc5d0 \ub450 \uc778\ub371\uc2a4\uac00 \ubaa8\ub450 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \ubb38\uc11c\uc5d0\uc11c \uad50\ucc28 \uc2a4\uce94\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694: <a href=\"https:\/\/dzone.com\/articles\/performance-ingredients-for-nosql-intersect-scans\/?ref=hello-from-couchbase\" target=\"_blank\" rel=\"noopener\">NoSQL\uc758 \uc131\ub2a5 \uc694\uc18c: N1QL\uc758 \uad50\ucc28 \uc2a4\uce94<\/a>.<\/p>\n<p>\ub2e4\uc74c\uc73c\ub85c \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ucffc\ub9ac\uc5d0 \ub300\ud574 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ud65c\uc131\ud654\ud569\ub2c8\ub2e4. CBO\ub294 \uc774\ubbf8 \uae30\ubcf8\uc801\uc73c\ub85c \ud65c\uc131\ud654\ub418\uc5b4 \uc788\uc73c\ubbc0\ub85c \ud1b5\uacc4\ub97c \uc218\uc9d1\ud558\uae30\ub9cc \ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:default decode:true\">UPDATE STATISTICS FOR airport(city, faa);\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\ud1b5\uacc4\uac00 \uc218\uc9d1\ub418\uba74 <code>\uc120\ud0dd<\/code> \ub2e4\uc2dc \ucffc\ub9ac\ud569\ub2c8\ub2e4.<\/p>\n<p>\uc2e4\ud589 \uacc4\ud68d\uc774 \ub2e4\uc74c\uacfc \uac19\uc774 \ubcc0\uacbd\ub418\ub294 \uac83\uc744 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. <code>airport.faa<\/code> \uc778\ub371\uc2a4\ub85c \ubcc0\uacbd\ub429\ub2c8\ub2e4. \uc774 \ubcc0\uacbd\uc740 \ud1b5\uacc4\uac00 \ucd5c\uc801\ud654 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c <code>faa<\/code> \ud544\ub4dc\uc5d0 \ube44\ud574 \uc120\ud0dd\uc131\uc774 \ub354 \uc88b\uc2b5\ub2c8\ub2e4. <code>\ub3c4\uc2dc<\/code> \ud544\ub4dc\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c <code>airport.faa<\/code> \uc778\ub371\uc2a4\ub294 \ucffc\ub9ac\uac00 \uc0ac\uc6a9\ud558\uae30\uc5d0 \ub354 \ud6a8\uc728\uc801\uc778 \uc778\ub371\uc2a4\uc785\ub2c8\ub2e4.<\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9767\" src=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM.png\" alt=\"Couchbase cost-based optimization execution plan for N1QL query\" width=\"2234\" height=\"284\" srcset=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM.png 2234w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-300x38.png 300w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-1024x130.png 1024w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-768x98.png 768w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-1536x195.png 1536w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-2048x260.png 2048w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-20x3.png 20w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.51.17-PM-1320x168.png 1320w\" sizes=\"auto, (max-width: 2234px) 100vw, 2234px\" \/><\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<h3>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ud1b5\ud55c \ub354 \ub098\uc740 \uc870\uc778<\/h3>\n<p>\ube44\uc6a9 \uae30\ubc18 \uc635\ud2f0\ub9c8\uc774\uc800\uac00 \ub2e4\uc74c \uc911 \ub354 \ub098\uc740 \uc870\uc778 \uc720\ud615\uc744 \uc120\ud0dd\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc8fc\ub294 \ub610 \ub2e4\ub978 \ube44\uc6a9 \uae30\ubc18 \ucffc\ub9ac \ucd5c\uc801\ud654 \uc608\uc81c\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. <code>\uacf5\ud56d<\/code> \uadf8\ub9ac\uace0 <code>\uacbd\ub85c<\/code>.<\/p>\n<p>\uba3c\uc800 \uc18c\uc2a4 \uacf5\ud56d\uc744 \ucd94\uc801\ud558\uae30 \uc704\ud55c \uc778\ub371\uc2a4\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4:<\/p>\n<pre class=\"lang:default decode:true\">CREATE INDEX `def_route_sourceairport` ON `travel-sample`.`_default`.`route`(`sourceairport`)\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uadf8\ub7f0 \ub2e4\uc74c \uc544\ub798 \ucffc\ub9ac\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4:<\/p>\n<pre class=\"lang:default decode:true\">SELECT DISTINCT route.destinationairport FROM airport JOIN route ON airport.faa = route.sourceairport;\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uae30\uc874 \uaddc\uce59 \uae30\ubc18 \uc635\ud2f0\ub9c8\uc774\uc800\ub97c \uc0ac\uc6a9\ud558\uba74 \uc704 \ucffc\ub9ac\uc758 \uc2e4\ud589 \uacc4\ud68d\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9768\" src=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM.png\" alt=\"rules-based optimization execution plan for database JOIN\" width=\"2482\" height=\"522\" srcset=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM.png 2482w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-300x63.png 300w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-1024x215.png 1024w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-768x162.png 768w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-1536x323.png 1536w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-2048x431.png 2048w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-20x4.png 20w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.53.30-PM-1320x278.png 1320w\" sizes=\"auto, (max-width: 2482px) 100vw, 2482px\" \/><\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uc704\uc758 RBO \uc2e4\ud589 \uacc4\ud68d\uc740 \uc911\ucca9 \ub8e8\ud504\ub97c \uc0ac\uc6a9\ud558\uc5ec \uacf5\ud56d \uceec\ub809\uc158\uc744 \uacbd\ub85c \uceec\ub809\uc158\uc5d0 \uc870\uc778\ud569\ub2c8\ub2e4.<\/p>\n<p>\ub2e4\uc74c\uc73c\ub85c \ucffc\ub9ac\uc5d0 \ub300\ud574 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \uc0ac\uc6a9 \uc124\uc815\ud574\uc57c \ud569\ub2c8\ub2e4. CBO\ub294 \uae30\ubcf8\uc801\uc73c\ub85c \uc774\ubbf8 \uc0ac\uc6a9 \uc124\uc815\ub418\uc5b4 \uc788\uc73c\ubbc0\ub85c \uceec\ub809\uc158\uc5d0\uc11c \ud544\ub4dc\uc5d0 \ub300\ud55c \ud1b5\uacc4\ub97c \uc218\uc9d1\ud558\uae30\ub9cc \ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n<pre class=\"lang:default decode:true\">UPDATE STATISTICS FOR route(sourceairport);\r\nUPDATE STATISTICS FOR airport(faa);\r\n<\/pre>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>\uc778\ub371\uc2a4\uc5d0 \ub300\ud55c \ub450 \uac1c\uc758 \uae30\ubcf8 \ud544\ub4dc\uc5d0\uc11c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ud1b5\uacc4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uac8c \ub418\uba74 \ucd5c\uc801\ud654 \ub3c4\uad6c\ub294 <code>HASH<\/code> \ub97c \uceec\ub809\uc158 \uc870\uc778\uc5d0 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9769\" src=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM.png\" alt=\"Couchbase CBO optimizer query execution plan using a HASH for the Collection JOIN\" width=\"2484\" height=\"466\" srcset=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM.png 2484w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-300x56.png 300w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-1024x192.png 1024w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-768x144.png 768w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-1536x288.png 1536w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-2048x384.png 2048w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-20x4.png 20w, https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/Screen-Shot-2020-11-13-at-1.54.58-PM-1320x248.png 1320w\" sizes=\"auto, (max-width: 2484px) 100vw, 2484px\" \/><\/p>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<h2>Couchbase\uc758 \ube44\uc6a9 \uae30\ubc18 \uc635\ud2f0\ub9c8\uc774\uc800 \ubb38\uc81c \ud574\uacb0<\/h2>\n<ol>\n<li>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub294 Couchbase 7.0\uc5d0\uc11c \uae30\ubcf8\uc801\uc73c\ub85c \ud65c\uc131\ud654\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c\uac00 \ud6a8\uacfc\uc801\uc73c\ub85c \uc791\ub3d9\ud558\ub824\uba74 \ubc84\ud0b7\/\uceec\ub809\uc158\uc758 \ud2b9\uc815 \ud544\ub4dc\uc5d0 \ub300\ud55c \ud1b5\uacc4\uac00 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<li>N1QL \uae30\ub2a5 \uc81c\uc5b4 \ud544\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud074\ub7ec\uc2a4\ud130 \uc218\uc900\uc5d0\uc11c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub97c \ube44\ud65c\uc131\ud654\ud558\ub824\uba74 \uac12\uc5d0 16\uc744 \ub354\ud558\uba74 \ub429\ub2c8\ub2e4. x10 \ube44\ud2b8\uc758 \uc138\ud2b8\uc785\ub2c8\ub2e4.<\/li>\n<li>CBO \ud1b5\uacc4\ub294 \ucffc\ub9ac \uc11c\ube44\uc2a4\uc5d0 \uc758\ud574 \uc790\ub3d9\uc73c\ub85c \uc5c5\ub370\uc774\ud2b8\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc815\uae30\uc801\uc73c\ub85c \ub610\ub294 \uc218\uc9d1 \ucf58\ud150\uce20\uac00 \ud06c\uac8c \ubcc0\uacbd\ub41c \ud6c4\uc5d0 \ud1b5\uacc4\ub97c \uc218\uc9d1\ud574\uc57c \ud569\ub2c8\ub2e4. \ub300\ub7c9\uc758 \ub370\uc774\ud130\uac00 \uc5c5\ub85c\ub4dc\ub41c \ud6c4\uc5d0\ub294 \ud1b5\uacc4\ub97c \uc218\uc9d1\ud558\ub294 \uac83\uc774 \uc88b\uc73c\uba70, \uadf8\ub807\uc9c0 \uc54a\uc740 \uacbd\uc6b0\uc5d0\ub294 \ub9e4\uc8fc \uc2e4\ud589\ud558\ub294 \uac83\uc73c\ub85c \ucda9\ubd84\ud569\ub2c8\ub2e4.<\/li>\n<li>\ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\ub294 \ub2e4\uc74c\uc5d0 \ub300\ud55c \ud1b5\uacc4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub9cc \ucffc\ub9ac\uc5d0 \ub300\ud574 \uace0\ub824\ub429\ub2c8\ub2e4. <em>\uc635\ud2f0\ub9c8\uc774\uc800\uac00 \uace0\ub824\ud558\uace0 \uc788\ub358 \ubaa8\ub4e0 \uc778\ub371\uc2a4\uc5d0 \ub300\ud574<\/em>. \ub2e4\uc74c\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc9c0\uc815\ub41c \ud0a4 \uacf5\uac04\uc758 \ubaa8\ub4e0 \uc778\ub371\uc2a4\uc5d0 \ub300\ud55c \ud1b5\uacc4\ub97c \uc218\uc9d1\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:\n<pre class=\"lang:default decode:true\">UPDATE STATISTICS FOR &lt;collection&gt; INDEX((SELECT RAW name from system:indexes \r\n    WHERE state='online' AND keyspace_id='&lt;collection_name&gt;' AND bucket_id='&lt;bucket_name&gt;' AND scope_id='&lt;scope_name&gt;'))\r\n<\/pre>\n<\/li>\n<\/ol>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<h2>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/h2>\n<p>JSON\uc6a9 \ube44\uc6a9 \uae30\ubc18 \uc635\ud2f0\ub9c8\uc774\uc800 \ubc0f Couchbase 7.0 \ub9b4\ub9ac\uc2a4 \uc804\ubc18\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\ub824\uba74 \ub2e4\uc74c \ub9ac\uc18c\uc2a4\ub97c \ud655\uc778\ud558\uc138\uc694:<\/p>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li><a href=\"https:\/\/www.couchbase.com\/blog\/ko\/why-cost-based-optimizer-for-nosql-n1ql-couchbase\/?ref=blog\" target=\"_blank\" rel=\"noopener\">\uc801\uc744\uc218\ub85d \uc88b\uc2b5\ub2c8\ub2e4: \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c\ub97c \uc0ac\uc6a9\ud558\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc778\uac00\uc694?<\/a><\/li>\n<li><a href=\"https:\/\/www.couchbase.com\/blog\/ko\/cost-based-optimizer-for-couchbase-n1ql-sql-for-json\/?ref=blog\" target=\"_blank\" rel=\"noopener\">N1QL \ucffc\ub9ac \uc5b8\uc5b4\uc6a9 \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654 \ub3c4\uad6c<\/a><\/li>\n<li><a href=\"https:\/\/people.eecs.berkeley.edu\/~brewer\/cs262\/3-selinger79.pdf?ref=hello-from-couchbase\" target=\"_blank\" rel=\"noopener\">\uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc561\uc138\uc2a4 \uacbd\ub85c \uc120\ud0dd<\/a><\/li>\n<li><a href=\"https:\/\/docs.couchbase.com\/server\/7.0\/introduction\/whats-new.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Couchbase Server 7.0\uc758 \uc0c8\ub85c\uc6b4 \uae30\ub2a5<\/a><\/li>\n<li><a href=\"https:\/\/docs.couchbase.com\/server\/7.0\/release-notes\/relnotes.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Couchbase 7.0 \ub9b4\ub9ac\uc2a4 \ub178\ud2b8<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"wp-block-spacer\" style=\"height: 30px\" aria-hidden=\"true\"><\/div>\n<div style=\"text-align: center\"><strong>\uce74\uc6b0\uce58\ubca0\uc774\uc2a4\ub85c \ube44\uc6a9 \uae30\ubc18 \ucd5c\uc801\ud654\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uace0 \uc2f6\uc73c\uc2e0\uac00\uc694?<a href=\"https:\/\/www.couchbase.com\/blog\/ko\/downloads\/?ref=blog\" target=\"_blank\" rel=\"noopener\">Couchbase 7.0 \uc2dc\uc791\ud558\uae30<\/a><\/strong><\/div>\n<div class=\"wp-block-spacer\" style=\"height: 15px\" aria-hidden=\"true\"><\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Database users of every kind have come to expect cost-based optimization for their queries. It&#8217;s a standard feature of all traditional relational databases (RDBMS), but there hasn&#8217;t yet been a cost-based optimizer (CBO) for NoSQL document databases. That is, until [&hellip;]<\/p>","protected":false},"author":26326,"featured_media":11680,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1814,1815,1816,1812],"tags":[8562,9361,2312,1261,1725,1385,9301],"ppma_author":[8919],"class_list":["post-9765","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application-design","category-best-practices-and-tutorials","category-couchbase-server","category-n1ql-query","tag-cost-based-optimization","tag-cost-based-optimizer","tag-document-database","tag-json","tag-nosql-database","tag-rdbms","tag-relational-database"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.8 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cost-Based Query Optimization Example to Boost Efficiency<\/title>\n<meta name=\"description\" content=\"Cost-based optimization for Couchbase queries is ready for general availability with Couchbase 7.0. Take a closer look at the new CBO features.\" \/>\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\/cost-based-optimization-with-couchbase-json-database\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Boost Query Efficiency with Cost-Based Optimization in Couchbase\" \/>\n<meta property=\"og:description\" content=\"Cost-based optimization for Couchbase queries is ready for general availability with Couchbase 7.0. Take a closer look at the new CBO features.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.couchbase.com\/blog\/ko\/cost-based-optimization-with-couchbase-json-database\/\" \/>\n<meta property=\"og:site_name\" content=\"The Couchbase Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-08-10T07:00:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-14T01:43:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2021\/08\/cost-based-optimization-database-queries-couchbase-social.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"418\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Binh Le\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2021\/08\/cost-based-optimization-database-queries-couchbase-social.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Binh Le\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/\"},\"author\":{\"name\":\"Binh Le\",\"@id\":\"https:\/\/www.couchbase.com\/blog\/#\/schema\/person\/f89064928e262c71eb43bee996c48c63\"},\"headline\":\"Boost Query Efficiency with Cost-Based Optimization in Couchbase\",\"datePublished\":\"2021-08-10T07:00:34+00:00\",\"dateModified\":\"2025-06-14T01:43:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/\"},\"wordCount\":1249,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/cost-based-optimization-database-queries-couchbase.jpg\",\"keywords\":[\"Cost Based Optimization\",\"cost-based optimizer\",\"document database\",\"JSON\",\"NoSQL Database\",\"RDBMS\",\"relational database\"],\"articleSection\":[\"Application Design\",\"Best Practices and Tutorials\",\"Couchbase Server\",\"SQL++ \/ N1QL Query\"],\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/\",\"url\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/\",\"name\":\"Cost-Based Query Optimization Example to Boost Efficiency\",\"isPartOf\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.couchbase.com\/blog\/cost-based-optimization-with-couchbase-json-database\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.couchbase.com\/blog\/wp-content\/uploads\/sites\/1\/2020\/11\/cost-based-optimization-database-queries-couchbase.jpg\",\"datePublished\":\"2021-08-10T07:00:34+00:00\",\"dateModified\":\"2025-06-14T01:43:33+00:00\",\"description\":\"Cost-based optimization for Couchbase queries is ready for general availability with Couchbase 7.0. 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