{"id":235,"date":"2026-07-30T18:20:47","date_gmt":"2026-07-30T14:50:47","guid":{"rendered":"https:\/\/tarahanenovin.ir\/blog\/?p=235"},"modified":"2026-07-30T18:20:47","modified_gmt":"2026-07-30T14:50:47","slug":"%d8%a8%d9%87%db%8c%d9%86%d9%87-%d8%b3%d8%a7%d8%b2%db%8c-%d8%af%db%8c%d8%aa%d8%a7%d8%a8%db%8c%d8%b3%d8%9b-%d8%ac%d8%a7%db%8c%db%8c-%da%a9%d9%87-%db%b8%db%b0%d9%aa-%d8%b3%d8%b1%d8%b9%d8%aa-%d8%b3%d8%a7","status":"publish","type":"post","link":"https:\/\/tarahanenovin.ir\/blog\/%d8%a8%d9%87%db%8c%d9%86%d9%87-%d8%b3%d8%a7%d8%b2%db%8c-%d8%af%db%8c%d8%aa%d8%a7%d8%a8%db%8c%d8%b3%d8%9b-%d8%ac%d8%a7%db%8c%db%8c-%da%a9%d9%87-%db%b8%db%b0%d9%aa-%d8%b3%d8%b1%d8%b9%d8%aa-%d8%b3%d8%a7\/","title":{"rendered":"\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633\u061b \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u06f8\u06f0\u066a \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0634\u0645\u0627 \u062f\u0631 \u0622\u0646 \u0646\u0647\u0641\u062a\u0647 \u0627\u0633\u062a"},"content":{"rendered":"<p dir=\"rtl\" lang=\"fa\">\u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0641\u0642\u0637 \u00ab\u06a9\u0634 \u0648 CDN\u00bb \u0646\u06cc\u0633\u062a. \u062f\u0631 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u067e\u0631\u0648\u0698\u0647 \u0647\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc\u060c \u06af\u0644\u0648\u06af\u0627\u0647 \u0627\u0635\u0644\u06cc \u062c\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0628\u0647 \u0622\u0646 \u062e\u062a\u0645 \u0645\u06cc \u0634\u0648\u062f: <strong>\u062f\u06cc\u062a\u0627\u0628\u06cc\u0633<\/strong>. \u0647\u0631 \u0635\u0641\u062d\u0647\u060c \u0647\u0631 \u062c\u0633\u062a\u062c\u0648\u060c \u0647\u0631 \u0641\u06cc\u0644\u062a\u0631 \u0645\u062d\u0635\u0648\u0644\u060c \u0647\u0631 \u06af\u0632\u0627\u0631\u0634 \u0645\u062f\u06cc\u0631\u06cc\u062a\u06cc \u0648 \u062d\u062a\u06cc \u0644\u0627\u06af\u06cc\u0646 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u062f\u0631 \u0646\u0647\u0627\u06cc\u062a \u0628\u0647 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u060c \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627\u060c \u0642\u0641\u0644 \u0647\u0627 \u0648 I\/O \u062f\u06cc\u0633\u06a9 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0648\u0627\u0628\u0633\u062a\u0647 \u0627\u0633\u062a. \u0627\u06af\u0631 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u06a9\u0646\u062f \u0628\u0627\u0634\u062f\u060c \u0628\u0642\u06cc\u0647 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0647\u0627 \u0641\u0642\u0637 \u0645\u064f\u0633\u06a9\u0646 \u0647\u0633\u062a\u0646\u062f.<\/p>\n<p dir=\"rtl\" lang=\"fa\">\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647\u060c \u0628\u0647 \u0635\u0648\u0631\u062a \u062c\u0627\u0645\u0639 \u0648 \u0639\u0645\u0644\u06cc \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u0686\u06af\u0648\u0646\u0647 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0633\u0631\u0639\u062a\u060c \u067e\u0627\u06cc\u062f\u0627\u0631\u06cc \u0648 \u0645\u0642\u06cc\u0627\u0633 \u067e\u0630\u06cc\u0631\u06cc \u0628\u0647\u06cc\u0646\u0647 \u06a9\u0646\u06cc\u062f\u061b \u0627\u0632 \u0639\u0644\u0627\u0626\u0645 \u0648 \u0631\u0648\u0634 \u062a\u0634\u062e\u06cc\u0635 \u0645\u0634\u06a9\u0644 \u062a\u0627 \u062a\u06a9\u0646\u06cc\u06a9 \u0647\u0627\u06cc \u0633\u0637\u062d Query\u060c Schema\u060c Index\u060c Cache \u0648 \u0632\u06cc\u0631\u0633\u0627\u062e\u062a.<\/p>\n<h2 dir=\"rtl\" lang=\"fa\">\u0686\u0631\u0627 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0645\u0639\u0645\u0648\u0644\u0627 \u0639\u0627\u0645\u0644 \u0627\u0635\u0644\u06cc \u06a9\u0646\u062f\u06cc \u0627\u0633\u062a\u061f<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">1) \u0628\u06cc\u0634\u062a\u0631 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0647\u0627 \u0628\u0647 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u062e\u062a\u0645 \u0645\u06cc \u0634\u0648\u0646\u062f<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u062d\u062a\u06cc \u0627\u06af\u0631 HTML \u06a9\u0634 \u0634\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0628\u062e\u0634 \u0647\u0627 \u062f\u06cc\u0646\u0627\u0645\u06cc\u06a9 \u0627\u0646\u062f: \u0633\u0628\u062f \u062e\u0631\u06cc\u062f\u060c \u0645\u0648\u062c\u0648\u062f\u06cc\u060c \u067e\u0631\u0648\u0641\u0627\u06cc\u0644\u060c \u0646\u062a\u0627\u06cc\u062c \u062c\u0633\u062a\u062c\u0648\u060c \u067e\u0646\u0644 \u0645\u062f\u06cc\u0631\u06cc\u062a\u060c \u067e\u06cc\u0634\u0646\u0647\u0627\u062f\u0647\u0627 \u0648\u2026<\/p>\n<h3 dir=\"rtl\" lang=\"fa\">2) \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647\u060c \u062e\u0637\u06cc \u0631\u0634\u062f \u0646\u0645\u06cc \u06a9\u0646\u062f\u061b \u0646\u0645\u0627\u06cc\u06cc \u0645\u0634\u06a9\u0644 \u0645\u06cc \u0633\u0627\u0632\u062f<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u06a9\u0648\u0626\u0631\u06cc \u06a9\u0647 \u0631\u0648\u06cc 10 \u0647\u0632\u0627\u0631 \u0631\u06a9\u0648\u0631\u062f \u062e\u0648\u0628 \u0627\u0633\u062a\u060c \u0631\u0648\u06cc 10 \u0645\u06cc\u0644\u06cc\u0648\u0646 \u0631\u06a9\u0648\u0631\u062f \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0641\u0627\u062c\u0639\u0647 \u0628\u0627\u0634\u062f\u060c \u0627\u06af\u0631 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0648 \u0637\u0631\u0627\u062d\u06cc \u062f\u0631\u0633\u062a \u0646\u0628\u0627\u0634\u062f.<\/p>\n<h3 dir=\"rtl\" lang=\"fa\">3) \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0647\u0645 CPU \u062f\u0627\u0631\u062f\u060c \u0647\u0645 RAM\u060c \u0647\u0645 Disk \u0648 \u0647\u0645 Lock<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u06a9\u0646\u062f\u06cc \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0627\u0632 \u0647\u0631 \u06a9\u062f\u0627\u0645 \u0628\u0627\u0634\u062f:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>CPU \u0628\u0627\u0644\u0627: \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646\u060c Sort\/Group \u0632\u06cc\u0627\u062f<\/li>\n<li>RAM \u06a9\u0645: \u06a9\u0634 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u06a9\u0645\u060c \u062e\u0648\u0627\u0646\u062f\u0646 \u0627\u0632 \u062f\u06cc\u0633\u06a9<\/li>\n<li>Disk \u06a9\u0646\u062f: I\/O \u0628\u0627\u0644\u0627\u060c \u0644\u0627\u06af \u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u060c tempdb (\u062f\u0631 SQL Server)<\/li>\n<li>Lock\/Blocking: \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627\u06cc \u0637\u0648\u0644\u0627\u0646\u06cc\u060c \u0647\u0645\u0632\u0645\u0627\u0646\u06cc \u0628\u0627\u0644\u0627<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0639\u0644\u0627\u0626\u0645 \u06a9\u0644\u0627\u0633\u06cc\u06a9 \u0645\u0634\u06a9\u0644 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 (\u06a9\u0647 \u0628\u0627\u06cc\u062f \u062c\u062f\u06cc \u0628\u06af\u06cc\u0631\u06cc\u062f)<\/h2>\n<ul dir=\"rtl\" lang=\"fa\">\n<li><strong>TTFB<\/strong> \u0628\u0627\u0644\u0627 (\u0632\u0645\u0627\u0646 \u0634\u0631\u0648\u0639 \u067e\u0627\u0633\u062e \u0627\u0632 \u0633\u0631\u0648\u0631 \u0632\u06cc\u0627\u062f \u0627\u0633\u062a)<\/li>\n<li>\u0627\u0641\u0632\u0627\u06cc\u0634 \u0646\u0627\u06af\u0647\u0627\u0646\u06cc \u0632\u0645\u0627\u0646 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u062f\u0631 \u0633\u0627\u0639\u0627\u062a \u0634\u0644\u0648\u063a<\/li>\n<li>CPU \u06cc\u0627 Disk \u0633\u0631\u0648\u0631 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0646\u0632\u062f\u06cc\u06a9 100\u066a<\/li>\n<li>\u062a\u0627\u06cc\u0645 \u0627\u0648\u062a \u0634\u062f\u0646 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0647\u0627<\/li>\n<li>\u06af\u0632\u0627\u0631\u0634 \u0647\u0627 \u0648 \u0644\u06cc\u0633\u062a \u0647\u0627\u06cc \u067e\u0646\u0644 \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u0646\u062f\u062a\u0631 \u0627\u0632 \u0642\u0628\u0644<\/li>\n<li>\u06a9\u0646\u062f\u06cc \u0641\u0642\u0637 \u062f\u0631 \u0628\u0631\u062e\u06cc \u0635\u0641\u062d\u0627\u062a (\u0645\u062b\u0644 \u062c\u0633\u062a\u062c\u0648\/\u0641\u06cc\u0644\u062a\u0631\/\u06af\u0632\u0627\u0631\u0634)<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0631\u0648\u0634 \u062f\u0631\u0633\u062a \u0634\u0631\u0648\u0639 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc: \u0627\u0648\u0644 \u0627\u0646\u062f\u0627\u0632\u0647 \u06af\u06cc\u0631\u06cc\u060c \u0628\u0639\u062f \u062a\u063a\u06cc\u06cc\u0631<\/h2>\n<p dir=\"rtl\" lang=\"fa\">\u0627\u06af\u0631 \u0628\u062f\u0648\u0646 \u0627\u0646\u062f\u0627\u0632\u0647 \u06af\u06cc\u0631\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f\u060c \u0627\u062d\u062a\u0645\u0627\u0644 \u062f\u0627\u0631\u062f \u0645\u0634\u06a9\u0644 \u0631\u0627 \u062c\u0627\u0628\u062c\u0627 \u06a9\u0646\u06cc\u062f \u06cc\u0627 \u0628\u062f\u062a\u0631 \u06a9\u0646\u06cc\u062f.<\/p>\n<h3 dir=\"rtl\" lang=\"fa\">\u0686\u06a9 \u0644\u06cc\u0633\u062a \u0627\u0646\u062f\u0627\u0632\u0647 \u06af\u06cc\u0631\u06cc<\/h3>\n<ol dir=\"rtl\" lang=\"fa\">\n<li><strong>\u06a9\u0646\u062f\u062a\u0631\u06cc\u0646 endpoint\u0647\u0627\/\u0635\u0641\u062d\u0627\u062a<\/strong> \u0631\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f (\u0627\u0632 APM \u06cc\u0627 \u0644\u0627\u06af \u0632\u0645\u0627\u0646 \u067e\u0627\u0633\u062e)<\/li>\n<li><strong>\u06a9\u0646\u062f\u062a\u0631\u06cc\u0646 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627<\/strong> \u0631\u0627 \u0644\u06cc\u0633\u062a \u06a9\u0646\u06cc\u062f:\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0645\u06cc\u0627\u0646\u06af\u06cc\u0646 \u0632\u0645\u0627\u0646<\/li>\n<li>\u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0632\u0645\u0627\u0646<\/li>\n<li>\u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u062a\u0639\u062f\u0627\u062f \u0627\u062c\u0631\u0627<\/li>\n<\/ul>\n<\/li>\n<li>\u0628\u0631\u0627\u06cc \u0647\u0631 \u06a9\u0648\u0626\u0631\u06cc\u060c \u0627\u06cc\u0646 \u0647\u0627 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f:\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Execution Plan<\/li>\n<li>\u062a\u0639\u062f\u0627\u062f \u0631\u062f\u06cc\u0641 \u0647\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc vs \u062a\u062e\u0645\u06cc\u0646\u06cc<\/li>\n<li>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 Index (Seek) \u06cc\u0627 Scan<\/li>\n<li>\u0645\u06cc\u0632\u0627\u0646 Sort\/Hash\/Spill \u0628\u0647 \u062f\u06cc\u0633\u06a9<\/li>\n<\/ul>\n<\/li>\n<li>Bottleneck \u0631\u0627 \u0645\u0634\u062e\u0635 \u06a9\u0646\u06cc\u062f: CPU\u061f I\/O\u061f Lock\u061f Network\u061f<\/li>\n<\/ol>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f1: \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc Query (\u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0627\u062b\u0631 \u0628\u0627 \u06a9\u0645\u062a\u0631\u06cc\u0646 \u0647\u0632\u06cc\u0646\u0647)<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">1) N+1 Query (\u0642\u0627\u062a\u0644 \u067e\u0646\u0647\u0627\u0646 \u0633\u0631\u0639\u062a)<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u0645\u062b\u0627\u0644 \u0631\u0627\u06cc\u062c: \u0644\u06cc\u0633\u062a \u0633\u0641\u0627\u0631\u0634 \u0647\u0627 \u0631\u0627 \u0645\u06cc \u06af\u06cc\u0631\u06cc\u062f\u060c \u0628\u0639\u062f \u0628\u0631\u0627\u06cc \u0647\u0631 \u0633\u0641\u0627\u0631\u0634 \u06cc\u06a9 \u06a9\u0648\u0626\u0631\u06cc \u062c\u062f\u0627 \u0628\u0631\u0627\u06cc \u0622\u06cc\u062a\u0645 \u0647\u0627 \u0645\u06cc \u0632\u0646\u06cc\u062f.<\/p>\n<p dir=\"rtl\" lang=\"fa\">\u0631\u0627\u0647 \u062d\u0644:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Join \/ Include \u0635\u062d\u06cc\u062d<\/li>\n<li>Batch query<\/li>\n<li>Preload \u06a9\u0631\u062f\u0646 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0648\u0627\u0628\u0633\u062a\u0647<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">2) \u0641\u0642\u0637 \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc \u0644\u0627\u0632\u0645 \u0631\u0627 SELECT \u06a9\u0646\u06cc\u062f<\/h3>\n<p dir=\"rtl\" lang=\"fa\"><code>SELECT *<\/code> \u062f\u0631 \u0633\u06cc\u0633\u062a\u0645 \u0647\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc \u06cc\u0639\u0646\u06cc:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>I\/O \u0628\u06cc\u0634\u062a\u0631<\/li>\n<li>\u0627\u0646\u062a\u0642\u0627\u0644 \u062f\u06cc\u062a\u0627 \u0628\u06cc\u0634\u062a\u0631<\/li>\n<li>\u06a9\u0634 \u06a9\u0645\u062a\u0631 \u0645\u0641\u06cc\u062f<\/li>\n<li>\u0627\u062d\u062a\u0645\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u06a9\u0631\u062f\u0646 \u0627\u0632 Covering Index<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">3) Pagination \u062f\u0631\u0633\u062a<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u0628\u062f\u062a\u0631\u06cc\u0646 \u062d\u0627\u0644\u062a: <code>OFFSET ... FETCH<\/code> \u0631\u0648\u06cc \u062f\u06cc\u062a\u0627\u06cc \u0628\u0632\u0631\u06af \u0628\u062f\u0648\u0646 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0646\u0627\u0633\u0628.<\/p>\n<p dir=\"rtl\" lang=\"fa\">\u0631\u0627\u0647 \u0628\u0647\u062a\u0631 (Keyset Pagination):<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0628\u0631 \u0627\u0633\u0627\u0633 \u06a9\u0644\u06cc\u062f \u0645\u0631\u062a\u0628 \u0633\u0627\u0632\u06cc (\u0645\u062b\u0644\u0627 <code>Id<\/code> \u06cc\u0627 <code>CreatedAt<\/code>) \u0635\u0641\u062d\u0647 \u0628\u0646\u062f\u06cc \u06a9\u0646\u06cc\u062f.<\/li>\n<li>\u0645\u062b\u0627\u0644 \u0645\u0646\u0637\u0642\u06cc: \u00ab\u0628\u0639\u062f \u0627\u0632 \u0622\u062e\u0631\u06cc\u0646 Id \u0642\u0628\u0644\u06cc\u00bb \u0628\u0647 \u062c\u0627\u06cc OFFSET \u0628\u0632\u0631\u06af.<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">4) \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0642\u0627\u0628\u0644 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u0628\u0631\u062e\u06cc \u0627\u0644\u06af\u0648\u0647\u0627 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u0646\u062f \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0646\u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u062f:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062a\u0627\u0628\u0639 \u0631\u0648\u06cc \u0633\u062a\u0648\u0646 \u062f\u0631 WHERE (\u0645\u062b\u0644 <code>WHERE YEAR(CreatedAt)=2026<\/code>)<\/li>\n<li>\u062a\u0628\u062f\u06cc\u0644 \u0646\u0648\u0639 \u062f\u0627\u062f\u0647 \u062f\u0631 \u0634\u0631\u0637<\/li>\n<\/ul>\n<p dir=\"rtl\" lang=\"fa\">\u0631\u0627\u0647 \u062d\u0644:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0634\u0631\u0637 \u0631\u0627 \u0637\u0648\u0631\u06cc \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f \u06a9\u0647 \u0633\u062a\u0648\u0646 \u062e\u0627\u0645 \u0642\u0627\u0628\u0644 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0628\u0627\u0634\u062f (Range query).<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">5) \u062c\u0633\u062a\u062c\u0648 \u0628\u0627 LIKE<\/h3>\n<p dir=\"rtl\" lang=\"fa\"><code>LIKE '%term%'<\/code> \u0645\u0639\u0645\u0648\u0644\u0627 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0627 \u0628\u06cc \u0627\u062b\u0631 \u0645\u06cc \u06a9\u0646\u062f. \u0631\u0627\u0647 \u062d\u0644 \u0647\u0627:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Full-Text Search (\u062f\u0631 SQL Server \/ MySQL)<\/li>\n<li>\u0645\u0648\u062a\u0648\u0631 \u062c\u062f\u0627 \u0645\u062b\u0644 Elasticsearch \u0628\u0631\u0627\u06cc \u062c\u0633\u062a\u062c\u0648\u06cc \u062d\u0631\u0641\u0647 \u0627\u06cc<\/li>\n<li>\u0627\u06af\u0631 \u0641\u0642\u0637 Prefix \u0627\u0633\u062a: <code>LIKE 'term%'<\/code> \u0628\u0627 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0646\u0627\u0633\u0628<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">6) Aggregate \u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646 \u0631\u0627 \u0627\u0632 \u0645\u0633\u06cc\u0631 \u06a9\u0627\u0631\u0628\u0631 \u062e\u0627\u0631\u062c \u06a9\u0646\u06cc\u062f<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u06af\u0632\u0627\u0631\u0634 \u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646 \u0631\u0627:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Precompute \u06a9\u0646\u06cc\u062f (\u062c\u062f\u0648\u0644 \u062e\u0644\u0627\u0635\u0647 \/ Materialized View)<\/li>\n<li>\u06cc\u0627 Async \u0628\u0633\u0627\u0632\u06cc\u062f (job + cache)<\/li>\n<li>\u06cc\u0627 \u0627\u0632 replica \u062e\u0648\u0627\u0646\u062f\u0646\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f2: \u0627\u06cc\u0646\u062f\u06a9\u0633 \u06af\u0630\u0627\u0631\u06cc \u0627\u0635\u0648\u0644\u06cc (Index \u0645\u062b\u0644 \u0645\u06cc\u0627\u0646\u0628\u0631 \u0627\u0633\u062a)<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">\u0627\u0635\u0648\u0644 \u06a9\u0644\u06cc\u062f\u06cc \u0627\u06cc\u0646\u062f\u06a9\u0633<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0648\u06cc \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc\u06cc \u06a9\u0647 <strong>\u0632\u06cc\u0627\u062f WHERE \/ JOIN \/ ORDER BY<\/strong> \u0645\u06cc \u0634\u0648\u0646\u062f.<\/li>\n<li>\u0627\u06cc\u0646\u062f\u06a9\u0633 \u0632\u06cc\u0627\u062f = \u0633\u0631\u0639\u062a \u062e\u0648\u0627\u0646\u062f\u0646 \u0628\u0647\u062a\u0631\u060c \u0627\u0645\u0627:\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0633\u0631\u0639\u062a \u0646\u0648\u0634\u062a\u0646 \u0628\u062f\u062a\u0631<\/li>\n<li>\u062d\u062c\u0645 \u0628\u06cc\u0634\u062a\u0631<\/li>\n<li>\u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0633\u062e\u062a \u062a\u0631<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">\u0627\u0634\u062a\u0628\u0627\u0647\u0627\u062a \u0631\u0627\u06cc\u062c<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0648\u06cc \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc\u06cc \u06a9\u0647 Selectivity \u067e\u0627\u06cc\u06cc\u0646 \u062f\u0627\u0631\u0646\u062f (\u0645\u062b\u0644 boolean) \u0628\u062f\u0648\u0646 \u062a\u0631\u06a9\u06cc\u0628 \u0645\u0646\u0627\u0633\u0628<\/li>\n<li>\u0646\u062f\u0627\u0634\u062a\u0646 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u062a\u0631\u06a9\u06cc\u0628\u06cc \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0686\u0646\u062f\u062a\u0627\u06cc\u06cc<\/li>\n<li>\u0646\u0627\u0647\u0645\u0627\u0647\u0646\u06af\u06cc \u0628\u06cc\u0646 ORDER BY \u0648 \u062a\u0631\u062a\u06cc\u0628 \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc \u0627\u06cc\u0646\u062f\u06a9\u0633<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">Covering Index (\u06a9\u0627\u0647\u0634 \u0646\u06cc\u0627\u0632 \u0628\u0647 Lookup)<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u0627\u06af\u0631 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0645\u06cc\u0634\u0647 3-4 \u0633\u062a\u0648\u0646 \u0631\u0627 \u0645\u06cc \u062e\u0648\u0627\u0646\u062f\u060c \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0627 \u0637\u0648\u0631\u06cc \u0628\u0633\u0627\u0632\u06cc\u062f \u06a9\u0647 \u0647\u0645\u0627\u0646 \u0633\u062a\u0648\u0646 \u0647\u0627 \u0631\u0627 \u067e\u0648\u0634\u0634 \u062f\u0647\u062f \u062a\u0627 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0645\u062c\u0628\u0648\u0631 \u0646\u0634\u0648\u062f \u0628\u0647 \u062c\u062f\u0648\u0644 \u0627\u0635\u0644\u06cc \u0628\u0631\u06af\u0631\u062f\u062f.<\/p>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f3: \u0637\u0631\u0627\u062d\u06cc Schema \u0648 \u0645\u062f\u0644 \u062f\u0627\u062f\u0647 (\u0631\u06cc\u0634\u0647 \u0627\u06cc \u062a\u0631\u06cc\u0646 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc)<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">1) \u0646\u0648\u0639 \u062f\u0627\u062f\u0647 \u062f\u0631\u0633\u062a \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u062f<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li><code>INT<\/code> \u0628\u0647 \u062c\u0627\u06cc <code>BIGINT<\/code> \u0648\u0642\u062a\u06cc \u0644\u0627\u0632\u0645 \u0646\u06cc\u0633\u062a<\/li>\n<li><code>DATETIME2<\/code> \u0645\u0646\u0627\u0633\u0628 (\u062f\u0631 SQL Server)<\/li>\n<li>\u0637\u0648\u0644 varchar \u0645\u0646\u0637\u0642\u06cc<\/li>\n<\/ul>\n<p dir=\"rtl\" lang=\"fa\">\u0627\u06cc\u0646 \u0647\u0627 \u0631\u0648\u06cc I\/O\u060c \u06a9\u0634 \u0648 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0633\u062a\u0642\u06cc\u0645 \u0627\u062b\u0631 \u062f\u0627\u0631\u0646\u062f.<\/p>\n<h3 dir=\"rtl\" lang=\"fa\">2) \u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc vs \u062f\u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0628\u0631\u0627\u06cc \u062a\u0631\u0627\u06a9\u0646\u0634 \u0648 \u0635\u062d\u062a \u062f\u0627\u062f\u0647: \u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc \u062e\u0648\u0628 \u0627\u0633\u062a<\/li>\n<li>\u0628\u0631\u0627\u06cc \u0633\u0631\u0639\u062a \u062e\u0648\u0627\u0646\u062f\u0646 \u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631: \u062f\u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc \u06a9\u0646\u062a\u0631\u0644 \u0634\u062f\u0647 (\u0645\u062b\u0644\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0647\u0627\u060c \u06cc\u0627 snapshot) \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">3) \u062a\u0627\u0631\u06cc\u062e\u0686\u0647 \u0648 \u0644\u0627\u06af \u0647\u0627 \u0631\u0627 \u062c\u062f\u0627 \u06a9\u0646\u06cc\u062f<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u062c\u062f\u0648\u0644 \u0647\u0627\u06cc \u0644\u0627\u06af \u0627\u06af\u0631 \u0628\u0627 \u062c\u062f\u0627\u0648\u0644 \u0639\u0645\u0644\u06cc\u0627\u062a\u06cc \u0642\u0627\u0637\u06cc \u0634\u0648\u0646\u062f:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627 \u0633\u0646\u06af\u06cc\u0646 \u0645\u06cc \u0634\u0648\u0646\u062f<\/li>\n<li>Backup\/Restore \u06a9\u0646\u062f \u0645\u06cc \u0634\u0648\u062f<\/li>\n<li>\u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u06cc \u0631\u0648\u0632\u0645\u0631\u0647 \u06a9\u0646\u062f \u0645\u06cc \u0634\u0648\u0646\u062f<\/li>\n<\/ul>\n<p dir=\"rtl\" lang=\"fa\">\u0631\u0627\u0647 \u062d\u0644:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u062c\u062f\u0648\u0644 \u062c\u062f\u0627<\/li>\n<li>\u0622\u0631\u0634\u06cc\u0648 \u062f\u0648\u0631\u0647 \u0627\u06cc<\/li>\n<li>\u067e\u0627\u0631\u062a\u06cc\u0634\u0646 \u0628\u0646\u062f\u06cc (\u0627\u06af\u0631 \u0627\u0645\u06a9\u0627\u0646\u0634 \u0628\u0627\u0634\u062f)<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f4: Cache\u061b \u0627\u06af\u0631 \u062f\u0631\u0633\u062a \u067e\u06cc\u0627\u062f\u0647 \u0634\u0648\u062f\u060c \u0645\u0639\u062c\u0632\u0647 \u0645\u06cc \u06a9\u0646\u062f<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">\u0686\u0647 \u0686\u06cc\u0632\u06cc \u0631\u0627 \u06a9\u0634 \u06a9\u0646\u06cc\u0645\u061f<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062a\u0642\u0631\u06cc\u0628\u0627 \u062b\u0627\u0628\u062a: \u062a\u0646\u0638\u06cc\u0645\u0627\u062a\u060c \u062f\u0633\u062a\u0647 \u0628\u0646\u062f\u06cc \u0647\u0627<\/li>\n<li>\u0646\u062a\u0627\u06cc\u062c \u0645\u062d\u0627\u0633\u0628\u0627\u062a\u06cc: \u062a\u0639\u062f\u0627\u062f\u0647\u0627\u060c \u062e\u0644\u0627\u0635\u0647 \u0647\u0627<\/li>\n<li>\u0646\u062a\u0627\u06cc\u062c \u062c\u0633\u062a\u062c\u0648\u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631 (\u0628\u0627 TTL \u06a9\u0648\u062a\u0627\u0647)<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">\u06a9\u062c\u0627 \u06a9\u0634 \u06a9\u0646\u06cc\u0645\u061f<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Application cache (in-memory)<\/li>\n<li>Redis \/ Memcached<\/li>\n<li>CDN \u0628\u0631\u0627\u06cc \u0645\u062d\u062a\u0648\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 (\u06a9\u0645\u06a9 \u0645\u06cc \u06a9\u0646\u062f\u060c \u0648\u0644\u06cc \u062c\u0627\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0631\u0627 \u0646\u0645\u06cc \u06af\u06cc\u0631\u062f)<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">\u0646\u06a9\u062a\u0647 \u0645\u0647\u0645: Invalidation<\/h3>\n<p dir=\"rtl\" lang=\"fa\">\u06a9\u0634 \u0628\u062f\u0648\u0646 \u0633\u06cc\u0627\u0633\u062a invalidation \u06cc\u0639\u0646\u06cc \u00ab\u0646\u0645\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u0627\u0634\u062a\u0628\u0627\u0647\u00bb.<\/p>\n<p dir=\"rtl\" lang=\"fa\">\u067e\u0633:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>TTL \u0645\u0646\u0637\u0642\u06cc<\/li>\n<li>Cache key \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f<\/li>\n<li>\u067e\u0627\u06a9\u0633\u0627\u0632\u06cc \u0647\u0646\u06af\u0627\u0645 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0645\u0647\u0645<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f5: Concurrency\u060c Lock \u0648 \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627 (\u06a9\u0646\u062f\u06cc \u0641\u0642\u0637 \u06a9\u0648\u0626\u0631\u06cc \u0646\u06cc\u0633\u062a)<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">\u0639\u0644\u0627\u0626\u0645 Lock\/Blocking<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u06a9\u0646\u062f\u06cc \u0634\u062f\u06cc\u062f \u0641\u0642\u0637 \u062f\u0631 \u0633\u0627\u0639\u0627\u062a \u0634\u0644\u0648\u063a<\/li>\n<li>\u06a9\u0648\u0626\u0631\u06cc \u0647\u0627 \u062f\u0631 \u062d\u0627\u0644\u062a waiting<\/li>\n<\/ul>\n<p dir=\"rtl\" lang=\"fa\">\u0631\u0627\u0647 \u062d\u0644 \u0647\u0627\u06cc \u0645\u0639\u0645\u0648\u0644:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u06a9\u0648\u062a\u0627\u0647 \u06a9\u0631\u062f\u0646 \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627<\/li>\n<li>\u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0622\u067e\u062f\u06cc\u062a \u0647\u0627\u06cc \u062f\u0633\u062a\u0647 \u0627\u06cc \u062f\u0631 \u0633\u0627\u0639\u0627\u062a \u067e\u06cc\u06a9<\/li>\n<li>\u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0646\u0627\u0633\u0628 \u0628\u0631\u0627\u06cc \u06a9\u0627\u0647\u0634 \u0627\u0633\u06a9\u0646 \u0648 \u0642\u0641\u0644 \u06af\u0633\u062a\u0631\u062f\u0647<\/li>\n<li>\u0633\u0637\u062d \u0627\u06cc\u0632\u0648\u0644\u06cc\u0634\u0646 \u0645\u0646\u0627\u0633\u0628 (\u0628\u0633\u062a\u0647 \u0628\u0647 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633)<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f6: \u0646\u06af\u0647\u062f\u0627\u0631\u06cc (Maintenance)\u061b \u0686\u06cc\u0632\u06cc \u06a9\u0647 \u0645\u0639\u0645\u0648\u0644\u0627 \u0641\u0631\u0627\u0645\u0648\u0634 \u0645\u06cc \u0634\u0648\u062f<\/h2>\n<ul dir=\"rtl\" lang=\"fa\">\n<li><strong>\u0628\u0647 \u0631\u0648\u0632 \u0628\u0648\u062f\u0646 \u0622\u0645\u0627\u0631 (Statistics)<\/strong>: \u0628\u0631\u0627\u06cc \u067e\u0644\u0646 \u062f\u0631\u0633\u062a \u062d\u06cc\u0627\u062a\u06cc \u0627\u0633\u062a (\u062e\u0635\u0648\u0635\u0627 SQL Server)<\/li>\n<li><strong>Fragmentation<\/strong>: \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627\u06cc \u0628\u0647 \u0647\u0645 \u0631\u06cc\u062e\u062a\u0647 \u0631\u0648\u06cc I\/O \u0627\u062b\u0631 \u062f\u0627\u0631\u0646\u062f<\/li>\n<li><strong>Cleanup<\/strong>: \u062d\u0630\u0641 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0642\u062f\u06cc\u0645\u06cc\u060c \u0622\u0631\u0634\u06cc\u0648<\/li>\n<li><strong>Backup strategy<\/strong>: \u0628\u06a9\u0627\u067e \u0633\u0646\u06af\u06cc\u0646 \u062f\u0631 \u0633\u0627\u0639\u062a \u067e\u06cc\u06a9 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u06a9\u0646\u062f\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0628\u062e\u0634 \u06f7: \u0632\u06cc\u0631\u0633\u0627\u062e\u062a \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 (\u0648\u0642\u062a\u06cc Query \u062f\u0631\u0633\u062a \u0627\u0633\u062a \u0648\u0644\u06cc \u0647\u0646\u0648\u0632 \u06a9\u0646\u062f \u0627\u0633\u062a)<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">\u0645\u0648\u0627\u0631\u062f \u0645\u0647\u0645<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Disk \u0633\u0631\u06cc\u0639 (NVMe) \u0628\u0631\u0627\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u062d\u06cc\u0627\u062a\u06cc \u0627\u0633\u062a<\/li>\n<li>RAM \u06a9\u0627\u0641\u06cc \u0628\u0631\u0627\u06cc buffer pool<\/li>\n<li>\u062c\u062f\u0627 \u06a9\u0631\u062f\u0646 \u062f\u06cc\u0633\u06a9 \u062f\u06cc\u062a\u0627 \u0648 \u0644\u0627\u06af (\u062f\u0631 \u0628\u0631\u062e\u06cc \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627)<\/li>\n<li>\u062a\u0646\u0638\u06cc\u0645 \u06a9\u0627\u0646\u06a9\u0634\u0646 \u067e\u0648\u0644\u06cc\u0646\u06af (Application side)<\/li>\n<li>Replica \u0628\u0631\u0627\u06cc \u062e\u0648\u0627\u0646\u062f\u0646 (Read scaling)<\/li>\n<li>Sharding \u0641\u0642\u0637 \u0648\u0642\u062a\u06cc \u0644\u0627\u0632\u0645 \u0627\u0633\u062a (\u067e\u06cc\u0686\u06cc\u062f\u0647 \u0648 \u067e\u0631\u0647\u0632\u06cc\u0646\u0647)<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u0646\u0642\u0634\u0647 \u0631\u0627\u0647 \u067e\u06cc\u0634\u0646\u0647\u0627\u062f\u06cc (\u0639\u0645\u0644\u06cc \u0648 \u0645\u0631\u062d\u0644\u0647 \u0627\u06cc)<\/h2>\n<h3 dir=\"rtl\" lang=\"fa\">\u0645\u0631\u062d\u0644\u0647 1: \u062a\u0634\u062e\u06cc\u0635 \u0633\u0631\u06cc\u0639 (Quick Wins)<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>10 \u06a9\u0648\u0626\u0631\u06cc \u06a9\u0646\u062f \u0627\u0648\u0644 \u0631\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f<\/li>\n<li>N+1 \u0631\u0627 \u062d\u0630\u0641 \u06a9\u0646\u06cc\u062f<\/li>\n<li><code>SELECT *<\/code> \u0631\u0627 \u062d\u0630\u0641 \u06a9\u0646\u06cc\u062f<\/li>\n<li>\u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627\u06cc \u0628\u062f\u06cc\u0647\u06cc \u0631\u0648\u06cc WHERE\/JOIN \u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631 \u0628\u06af\u0630\u0627\u0631\u06cc\u062f<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">\u0645\u0631\u062d\u0644\u0647 2: \u0627\u0635\u0644\u0627\u062d \u0633\u0627\u062e\u062a\u0627\u0631\u06cc<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0628\u0627\u0632\u0637\u0631\u0627\u062d\u06cc \u062c\u062f\u0627\u0648\u0644 \u0645\u0634\u06a9\u0644 \u062f\u0627\u0631<\/li>\n<li>\u0622\u0631\u0634\u06cc\u0648\/\u067e\u0627\u0631\u062a\u06cc\u0634\u0646 \u0628\u0646\u062f\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062d\u062c\u06cc\u0645<\/li>\n<li>\u06a9\u0634 \u0628\u0631\u0627\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631<\/li>\n<\/ul>\n<h3 dir=\"rtl\" lang=\"fa\">\u0645\u0631\u062d\u0644\u0647 3: \u0645\u0642\u06cc\u0627\u0633 \u0648 \u067e\u0627\u06cc\u062f\u0627\u0631\u06cc<\/h3>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>Replica \u062e\u0648\u0627\u0646\u062f\u0646\u06cc<\/li>\n<li>Job \u0647\u0627\u06cc async \u0628\u0631\u0627\u06cc \u06af\u0632\u0627\u0631\u0634<\/li>\n<li>\u0645\u0627\u0646\u06cc\u062a\u0648\u0631\u06cc\u0646\u06af \u062f\u0627\u0626\u0645\u06cc + \u0628\u0648\u062f\u062c\u0647 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc<\/li>\n<\/ul>\n<h2 dir=\"rtl\" lang=\"fa\">\u062c\u0645\u0639 \u0628\u0646\u062f\u06cc<\/h2>\n<p dir=\"rtl\" lang=\"fa\">\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0645\u0639\u0645\u0648\u0644\u0627 \u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0628\u0627\u0632\u062f\u0647 \u0631\u0627 \u062f\u0631 \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u062f\u0627\u0631\u062f\u060c \u0686\u0648\u0646:<\/p>\n<ul dir=\"rtl\" lang=\"fa\">\n<li>\u0645\u0633\u062a\u0642\u06cc\u0645 \u0631\u0648\u06cc \u0632\u0645\u0627\u0646 \u067e\u0627\u0633\u062e \u0633\u0631\u0648\u0631 \u0627\u062b\u0631 \u0645\u06cc \u06af\u0630\u0627\u0631\u062f<\/li>\n<li>\u0628\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u062e\u0648\u062f\u0634 \u0631\u0627 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f<\/li>\n<li>\u0628\u0627 \u0686\u0646\u062f \u0627\u0635\u0644\u0627\u062d \u062f\u0631\u0633\u062a (Query + Index + Cache) \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0686\u0646\u062f \u0628\u0631\u0627\u0628\u0631 \u0628\u0647\u0628\u0648\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f<\/li>\n<\/ul>\n<p dir=\"rtl\" lang=\"fa\">\u0627\u06af\u0631 \u0627\u062d\u0633\u0627\u0633 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u0633\u0627\u06cc\u062a \u0634\u0645\u0627 \u0628\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u06cc\u0627 \u062f\u0627\u062f\u0647 \u0647\u0627 \u06a9\u0646\u062f \u0634\u062f\u0647\u060c \u06cc\u0627 \u0635\u0641\u062d\u0627\u062a \u062c\u0633\u062a\u062c\u0648 \u0648 \u067e\u0646\u0644 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0632\u0645\u0627\u0646 \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0644\u0648\u062f \u0634\u062f\u0646 \u0645\u06cc \u06af\u06cc\u0631\u0646\u062f\u060c \u062a\u06cc\u0645 \u0637\u0631\u0627\u062d\u0627\u0646 \u0646\u0648\u06cc\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0627 \u062a\u062d\u0644\u06cc\u0644 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u060c \u0628\u0631\u0631\u0633\u06cc \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627 \u0648 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0633\u0627\u062e\u062a\u0627\u0631 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633\u060c \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0634\u0645\u0627 \u0631\u0627 \u0628\u0647 \u0634\u06a9\u0644 \u067e\u0627\u06cc\u062f\u0627\u0631 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0647\u062f. \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0648\u0631\u0647 \u0648 \u0628\u0631\u0631\u0633\u06cc \u0641\u0646\u06cc\u060c \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0635\u0641\u062d\u0647 <a href=\"https:\/\/tarahanenovin.ir\/site\/contact\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">\u062a\u0645\u0627\u0633 \u0628\u0627 \u0645\u0627<\/a> \u062f\u0631 \u0627\u0631\u062a\u0628\u0627\u0637 \u0628\u0627\u0634\u06cc\u062f.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0641\u0642\u0637 \u00ab\u06a9\u0634 \u0648 CDN\u00bb \u0646\u06cc\u0633\u062a. \u062f\u0631 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u067e\u0631\u0648\u0698\u0647 \u0647\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc\u060c \u06af\u0644\u0648\u06af\u0627\u0647 \u0627\u0635\u0644\u06cc \u062c\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0628\u0647 \u0622\u0646 \u062e\u062a\u0645 \u0645\u06cc \u0634\u0648\u062f: \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633. \u0647\u0631 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\u0645\u0642\u0627\u0644\u0647\u060c \u0628\u0647 \u0635\u0648\u0631\u062a \u062c\u0627\u0645\u0639 \u0648 \u0639\u0645\u0644\u06cc \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u0686\u06af\u0648\u0646\u0647 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0633\u0631\u0639\u062a\u060c \u067e\u0627\u06cc\u062f\u0627\u0631\u06cc \u0648 \u0645\u0642\u06cc\u0627\u0633 \u067e\u0630\u06cc\u0631\u06cc \u0628\u0647\u06cc\u0646\u0647 \u06a9\u0646\u06cc\u062f\u061b \u0627\u0632 \u0639\u0644\u0627\u0626\u0645 \u0648 \u0631\u0648\u0634 \u062a\u0634\u062e\u06cc\u0635 \u0645\u0634\u06a9\u0644 \u062a\u0627 \u062a\u06a9\u0646\u06cc\u06a9 \u0647\u0627\u06cc \u0633\u0637\u062d Query\u060c Schema\u060c Index\u060c Cache \u0648 \u0632\u06cc\u0631\u0633\u0627\u062e\u062a. \u0686\u0631\u0627 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0645\u0639\u0645\u0648\u0644\u0627 \u0639\u0627\u0645\u0644 \u0627\u0635\u0644\u06cc \u06a9\u0646\u062f\u06cc 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\u0633\u0646\u06af\u06cc\u0646\u060c Sort\/Group \u0632\u06cc\u0627\u062f RAM \u06a9\u0645: \u06a9\u0634 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u06a9\u0645\u060c \u062e\u0648\u0627\u0646\u062f\u0646 \u0627\u0632 \u062f\u06cc\u0633\u06a9 Disk \u06a9\u0646\u062f: I\/O \u0628\u0627\u0644\u0627\u060c \u0644\u0627\u06af \u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u060c tempdb (\u062f\u0631 SQL Server) Lock\/Blocking: \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627\u06cc \u0637\u0648\u0644\u0627\u0646\u06cc\u060c \u0647\u0645\u0632\u0645\u0627\u0646\u06cc \u0628\u0627\u0644\u0627 \u0639\u0644\u0627\u0626\u0645 \u06a9\u0644\u0627\u0633\u06cc\u06a9 \u0645\u0634\u06a9\u0644 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 (\u06a9\u0647 \u0628\u0627\u06cc\u062f \u062c\u062f\u06cc \u0628\u06af\u06cc\u0631\u06cc\u062f) TTFB \u0628\u0627\u0644\u0627 (\u0632\u0645\u0627\u0646 \u0634\u0631\u0648\u0639 \u067e\u0627\u0633\u062e \u0627\u0632 \u0633\u0631\u0648\u0631 \u0632\u06cc\u0627\u062f 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\u0634\u0631\u0648\u0639 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc: \u0627\u0648\u0644 \u0627\u0646\u062f\u0627\u0632\u0647 \u06af\u06cc\u0631\u06cc\u060c \u0628\u0639\u062f \u062a\u063a\u06cc\u06cc\u0631 \u0627\u06af\u0631 \u0628\u062f\u0648\u0646 \u0627\u0646\u062f\u0627\u0632\u0647 \u06af\u06cc\u0631\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f\u060c \u0627\u062d\u062a\u0645\u0627\u0644 \u062f\u0627\u0631\u062f \u0645\u0634\u06a9\u0644 \u0631\u0627 \u062c\u0627\u0628\u062c\u0627 \u06a9\u0646\u06cc\u062f \u06cc\u0627 \u0628\u062f\u062a\u0631 \u06a9\u0646\u06cc\u062f. \u0686\u06a9 \u0644\u06cc\u0633\u062a \u0627\u0646\u062f\u0627\u0632\u0647 \u06af\u06cc\u0631\u06cc \u06a9\u0646\u062f\u062a\u0631\u06cc\u0646 endpoint\u0647\u0627\/\u0635\u0641\u062d\u0627\u062a \u0631\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f (\u0627\u0632 APM \u06cc\u0627 \u0644\u0627\u06af \u0632\u0645\u0627\u0646 \u067e\u0627\u0633\u062e) \u06a9\u0646\u062f\u062a\u0631\u06cc\u0646 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627 \u0631\u0627 \u0644\u06cc\u0633\u062a \u06a9\u0646\u06cc\u062f: \u0645\u06cc\u0627\u0646\u06af\u06cc\u0646 \u0632\u0645\u0627\u0646 \u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0632\u0645\u0627\u0646 \u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u062a\u0639\u062f\u0627\u062f \u0627\u062c\u0631\u0627 \u0628\u0631\u0627\u06cc \u0647\u0631 \u06a9\u0648\u0626\u0631\u06cc\u060c \u0627\u06cc\u0646 \u0647\u0627 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f: Execution Plan \u062a\u0639\u062f\u0627\u062f \u0631\u062f\u06cc\u0641 \u0647\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc vs \u062a\u062e\u0645\u06cc\u0646\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 Index (Seek) \u06cc\u0627 Scan \u0645\u06cc\u0632\u0627\u0646 Sort\/Hash\/Spill \u0628\u0647 \u062f\u06cc\u0633\u06a9 Bottleneck \u0631\u0627 \u0645\u0634\u062e\u0635 \u06a9\u0646\u06cc\u062f: CPU\u061f I\/O\u061f Lock\u061f Network\u061f \u0628\u062e\u0634 \u06f1: \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc Query (\u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0627\u062b\u0631 \u0628\u0627 \u06a9\u0645\u062a\u0631\u06cc\u0646 \u0647\u0632\u06cc\u0646\u0647) 1) N+1 Query (\u0642\u0627\u062a\u0644 \u067e\u0646\u0647\u0627\u0646 \u0633\u0631\u0639\u062a) \u0645\u062b\u0627\u0644 \u0631\u0627\u06cc\u062c: \u0644\u06cc\u0633\u062a \u0633\u0641\u0627\u0631\u0634 \u0647\u0627 \u0631\u0627 \u0645\u06cc \u06af\u06cc\u0631\u06cc\u062f\u060c \u0628\u0639\u062f \u0628\u0631\u0627\u06cc \u0647\u0631 \u0633\u0641\u0627\u0631\u0634 \u06cc\u06a9 \u06a9\u0648\u0626\u0631\u06cc \u062c\u062f\u0627 \u0628\u0631\u0627\u06cc \u0622\u06cc\u062a\u0645 \u0647\u0627 \u0645\u06cc \u0632\u0646\u06cc\u062f. \u0631\u0627\u0647 \u062d\u0644: Join \/ Include \u0635\u062d\u06cc\u062d Batch query Preload \u06a9\u0631\u062f\u0646 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0648\u0627\u0628\u0633\u062a\u0647 2) \u0641\u0642\u0637 \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc \u0644\u0627\u0632\u0645 \u0631\u0627 SELECT \u06a9\u0646\u06cc\u062f SELECT * \u062f\u0631 \u0633\u06cc\u0633\u062a\u0645 \u0647\u0627\u06cc \u0648\u0627\u0642\u0639\u06cc \u06cc\u0639\u0646\u06cc: I\/O \u0628\u06cc\u0634\u062a\u0631 \u0627\u0646\u062a\u0642\u0627\u0644 \u062f\u06cc\u062a\u0627 \u0628\u06cc\u0634\u062a\u0631 \u06a9\u0634 \u06a9\u0645\u062a\u0631 \u0645\u0641\u06cc\u062f \u0627\u062d\u062a\u0645\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u06a9\u0631\u062f\u0646 \u0627\u0632 Covering Index 3) Pagination \u062f\u0631\u0633\u062a \u0628\u062f\u062a\u0631\u06cc\u0646 \u062d\u0627\u0644\u062a: OFFSET &#8230; FETCH \u0631\u0648\u06cc \u062f\u06cc\u062a\u0627\u06cc \u0628\u0632\u0631\u06af \u0628\u062f\u0648\u0646 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0646\u0627\u0633\u0628. \u0631\u0627\u0647 \u0628\u0647\u062a\u0631 (Keyset Pagination): \u0628\u0631 \u0627\u0633\u0627\u0633 \u06a9\u0644\u06cc\u062f \u0645\u0631\u062a\u0628 \u0633\u0627\u0632\u06cc (\u0645\u062b\u0644\u0627 Id \u06cc\u0627 CreatedAt) \u0635\u0641\u062d\u0647 \u0628\u0646\u062f\u06cc \u06a9\u0646\u06cc\u062f. \u0645\u062b\u0627\u0644 \u0645\u0646\u0637\u0642\u06cc: \u00ab\u0628\u0639\u062f \u0627\u0632 \u0622\u062e\u0631\u06cc\u0646 Id \u0642\u0628\u0644\u06cc\u00bb \u0628\u0647 \u062c\u0627\u06cc OFFSET \u0628\u0632\u0631\u06af. 4) \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0642\u0627\u0628\u0644 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f \u0628\u0631\u062e\u06cc \u0627\u0644\u06af\u0648\u0647\u0627 \u0628\u0627\u0639\u062b \u0645\u06cc \u0634\u0648\u0646\u062f \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0646\u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u062f: \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062a\u0627\u0628\u0639 \u0631\u0648\u06cc \u0633\u062a\u0648\u0646 \u062f\u0631 WHERE (\u0645\u062b\u0644 WHERE YEAR(CreatedAt)=2026) \u062a\u0628\u062f\u06cc\u0644 \u0646\u0648\u0639 \u062f\u0627\u062f\u0647 \u062f\u0631 \u0634\u0631\u0637 \u0631\u0627\u0647 \u062d\u0644: \u0634\u0631\u0637 \u0631\u0627 \u0637\u0648\u0631\u06cc \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f \u06a9\u0647 \u0633\u062a\u0648\u0646 \u062e\u0627\u0645 \u0642\u0627\u0628\u0644 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0628\u0627\u0634\u062f (Range query). 5) \u062c\u0633\u062a\u062c\u0648 \u0628\u0627 LIKE LIKE &#8216;%term%&#8217; \u0645\u0639\u0645\u0648\u0644\u0627 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0627 \u0628\u06cc \u0627\u062b\u0631 \u0645\u06cc \u06a9\u0646\u062f. \u0631\u0627\u0647 \u062d\u0644 \u0647\u0627: Full-Text Search (\u062f\u0631 SQL Server \/ MySQL) \u0645\u0648\u062a\u0648\u0631 \u062c\u062f\u0627 \u0645\u062b\u0644 Elasticsearch \u0628\u0631\u0627\u06cc \u062c\u0633\u062a\u062c\u0648\u06cc \u062d\u0631\u0641\u0647 \u0627\u06cc \u0627\u06af\u0631 \u0641\u0642\u0637 Prefix \u0627\u0633\u062a: LIKE &#8216;term%&#8217; \u0628\u0627 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0646\u0627\u0633\u0628 6) Aggregate \u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646 \u0631\u0627 \u0627\u0632 \u0645\u0633\u06cc\u0631 \u06a9\u0627\u0631\u0628\u0631 \u062e\u0627\u0631\u062c \u06a9\u0646\u06cc\u062f \u06af\u0632\u0627\u0631\u0634 \u0647\u0627\u06cc \u0633\u0646\u06af\u06cc\u0646 \u0631\u0627: Precompute \u06a9\u0646\u06cc\u062f (\u062c\u062f\u0648\u0644 \u062e\u0644\u0627\u0635\u0647 \/ Materialized View) \u06cc\u0627 Async \u0628\u0633\u0627\u0632\u06cc\u062f (job + cache) \u06cc\u0627 \u0627\u0632 replica \u062e\u0648\u0627\u0646\u062f\u0646\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f \u0628\u062e\u0634 \u06f2: \u0627\u06cc\u0646\u062f\u06a9\u0633 \u06af\u0630\u0627\u0631\u06cc \u0627\u0635\u0648\u0644\u06cc (Index \u0645\u062b\u0644 \u0645\u06cc\u0627\u0646\u0628\u0631 \u0627\u0633\u062a) \u0627\u0635\u0648\u0644 \u06a9\u0644\u06cc\u062f\u06cc \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0648\u06cc \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0632\u06cc\u0627\u062f WHERE \/ JOIN \/ ORDER BY \u0645\u06cc \u0634\u0648\u0646\u062f. \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0632\u06cc\u0627\u062f = \u0633\u0631\u0639\u062a \u062e\u0648\u0627\u0646\u062f\u0646 \u0628\u0647\u062a\u0631\u060c \u0627\u0645\u0627: \u0633\u0631\u0639\u062a \u0646\u0648\u0634\u062a\u0646 \u0628\u062f\u062a\u0631 \u062d\u062c\u0645 \u0628\u06cc\u0634\u062a\u0631 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0633\u062e\u062a \u062a\u0631 \u0627\u0634\u062a\u0628\u0627\u0647\u0627\u062a \u0631\u0627\u06cc\u062c \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0648\u06cc \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc\u06cc \u06a9\u0647 Selectivity \u067e\u0627\u06cc\u06cc\u0646 \u062f\u0627\u0631\u0646\u062f (\u0645\u062b\u0644 boolean) \u0628\u062f\u0648\u0646 \u062a\u0631\u06a9\u06cc\u0628 \u0645\u0646\u0627\u0633\u0628 \u0646\u062f\u0627\u0634\u062a\u0646 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u062a\u0631\u06a9\u06cc\u0628\u06cc \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0686\u0646\u062f\u062a\u0627\u06cc\u06cc \u0646\u0627\u0647\u0645\u0627\u0647\u0646\u06af\u06cc \u0628\u06cc\u0646 ORDER BY \u0648 \u062a\u0631\u062a\u06cc\u0628 \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc \u0627\u06cc\u0646\u062f\u06a9\u0633 Covering Index (\u06a9\u0627\u0647\u0634 \u0646\u06cc\u0627\u0632 \u0628\u0647 Lookup) \u0627\u06af\u0631 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0645\u06cc\u0634\u0647 3-4 \u0633\u062a\u0648\u0646 \u0631\u0627 \u0645\u06cc \u062e\u0648\u0627\u0646\u062f\u060c \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0631\u0627 \u0637\u0648\u0631\u06cc \u0628\u0633\u0627\u0632\u06cc\u062f \u06a9\u0647 \u0647\u0645\u0627\u0646 \u0633\u062a\u0648\u0646 \u0647\u0627 \u0631\u0627 \u067e\u0648\u0634\u0634 \u062f\u0647\u062f \u062a\u0627 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0645\u062c\u0628\u0648\u0631 \u0646\u0634\u0648\u062f \u0628\u0647 \u062c\u062f\u0648\u0644 \u0627\u0635\u0644\u06cc \u0628\u0631\u06af\u0631\u062f\u062f. \u0628\u062e\u0634 \u06f3: \u0637\u0631\u0627\u062d\u06cc Schema \u0648 \u0645\u062f\u0644 \u062f\u0627\u062f\u0647 (\u0631\u06cc\u0634\u0647 \u0627\u06cc \u062a\u0631\u06cc\u0646 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc) 1) \u0646\u0648\u0639 \u062f\u0627\u062f\u0647 \u062f\u0631\u0633\u062a \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u062f INT \u0628\u0647 \u062c\u0627\u06cc BIGINT \u0648\u0642\u062a\u06cc \u0644\u0627\u0632\u0645 \u0646\u06cc\u0633\u062a DATETIME2 \u0645\u0646\u0627\u0633\u0628 (\u062f\u0631 SQL Server) \u0637\u0648\u0644 varchar \u0645\u0646\u0637\u0642\u06cc \u0627\u06cc\u0646 \u0647\u0627 \u0631\u0648\u06cc I\/O\u060c \u06a9\u0634 \u0648 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0633\u062a\u0642\u06cc\u0645 \u0627\u062b\u0631 \u062f\u0627\u0631\u0646\u062f. 2) \u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc vs \u062f\u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc \u0628\u0631\u0627\u06cc \u062a\u0631\u0627\u06a9\u0646\u0634 \u0648 \u0635\u062d\u062a \u062f\u0627\u062f\u0647: \u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc \u062e\u0648\u0628 \u0627\u0633\u062a \u0628\u0631\u0627\u06cc \u0633\u0631\u0639\u062a \u062e\u0648\u0627\u0646\u062f\u0646 \u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631: \u062f\u0646\u0631\u0645\u0627\u0644 \u0633\u0627\u0632\u06cc \u06a9\u0646\u062a\u0631\u0644 \u0634\u062f\u0647 (\u0645\u062b\u0644\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0647\u0627\u060c \u06cc\u0627 snapshot) \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f 3) \u062a\u0627\u0631\u06cc\u062e\u0686\u0647 \u0648 \u0644\u0627\u06af \u0647\u0627 \u0631\u0627 \u062c\u062f\u0627 \u06a9\u0646\u06cc\u062f \u062c\u062f\u0648\u0644 \u0647\u0627\u06cc \u0644\u0627\u06af \u0627\u06af\u0631 \u0628\u0627 \u062c\u062f\u0627\u0648\u0644 \u0639\u0645\u0644\u06cc\u0627\u062a\u06cc \u0642\u0627\u0637\u06cc \u0634\u0648\u0646\u062f: \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627 \u0633\u0646\u06af\u06cc\u0646 \u0645\u06cc \u0634\u0648\u0646\u062f Backup\/Restore \u06a9\u0646\u062f \u0645\u06cc \u0634\u0648\u062f \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u06cc \u0631\u0648\u0632\u0645\u0631\u0647 \u06a9\u0646\u062f \u0645\u06cc \u0634\u0648\u0646\u062f \u0631\u0627\u0647 \u062d\u0644: \u062c\u062f\u0648\u0644 \u062c\u062f\u0627 \u0622\u0631\u0634\u06cc\u0648 \u062f\u0648\u0631\u0647 \u0627\u06cc \u067e\u0627\u0631\u062a\u06cc\u0634\u0646 \u0628\u0646\u062f\u06cc (\u0627\u06af\u0631 \u0627\u0645\u06a9\u0627\u0646\u0634 \u0628\u0627\u0634\u062f) \u0628\u062e\u0634 \u06f4: Cache\u061b \u0627\u06af\u0631 \u062f\u0631\u0633\u062a \u067e\u06cc\u0627\u062f\u0647 \u0634\u0648\u062f\u060c \u0645\u0639\u062c\u0632\u0647 \u0645\u06cc \u06a9\u0646\u062f \u0686\u0647 \u0686\u06cc\u0632\u06cc \u0631\u0627 \u06a9\u0634 \u06a9\u0646\u06cc\u0645\u061f \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062a\u0642\u0631\u06cc\u0628\u0627 \u062b\u0627\u0628\u062a: \u062a\u0646\u0638\u06cc\u0645\u0627\u062a\u060c \u062f\u0633\u062a\u0647 \u0628\u0646\u062f\u06cc \u0647\u0627 \u0646\u062a\u0627\u06cc\u062c \u0645\u062d\u0627\u0633\u0628\u0627\u062a\u06cc: \u062a\u0639\u062f\u0627\u062f\u0647\u0627\u060c \u062e\u0644\u0627\u0635\u0647 \u0647\u0627 \u0646\u062a\u0627\u06cc\u062c \u062c\u0633\u062a\u062c\u0648\u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631 (\u0628\u0627 TTL \u06a9\u0648\u062a\u0627\u0647) \u06a9\u062c\u0627 \u06a9\u0634 \u06a9\u0646\u06cc\u0645\u061f Application cache (in-memory) Redis \/ Memcached CDN \u0628\u0631\u0627\u06cc \u0645\u062d\u062a\u0648\u0627\u06cc \u0627\u0633\u062a\u0627\u062a\u06cc\u06a9 (\u06a9\u0645\u06a9 \u0645\u06cc \u06a9\u0646\u062f\u060c \u0648\u0644\u06cc \u062c\u0627\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0631\u0627 \u0646\u0645\u06cc \u06af\u06cc\u0631\u062f) \u0646\u06a9\u062a\u0647 \u0645\u0647\u0645: Invalidation \u06a9\u0634 \u0628\u062f\u0648\u0646 \u0633\u06cc\u0627\u0633\u062a invalidation \u06cc\u0639\u0646\u06cc \u00ab\u0646\u0645\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u0627\u0634\u062a\u0628\u0627\u0647\u00bb. \u067e\u0633: TTL \u0645\u0646\u0637\u0642\u06cc Cache key \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f \u067e\u0627\u06a9\u0633\u0627\u0632\u06cc \u0647\u0646\u06af\u0627\u0645 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0645\u0647\u0645 \u0628\u062e\u0634 \u06f5: Concurrency\u060c Lock \u0648 \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627 (\u06a9\u0646\u062f\u06cc \u0641\u0642\u0637 \u06a9\u0648\u0626\u0631\u06cc \u0646\u06cc\u0633\u062a) \u0639\u0644\u0627\u0626\u0645 Lock\/Blocking \u06a9\u0646\u062f\u06cc \u0634\u062f\u06cc\u062f \u0641\u0642\u0637 \u062f\u0631 \u0633\u0627\u0639\u0627\u062a \u0634\u0644\u0648\u063a \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627 \u062f\u0631 \u062d\u0627\u0644\u062a waiting \u0631\u0627\u0647 \u062d\u0644 \u0647\u0627\u06cc \u0645\u0639\u0645\u0648\u0644: \u06a9\u0648\u062a\u0627\u0647 \u06a9\u0631\u062f\u0646 \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0622\u067e\u062f\u06cc\u062a \u0647\u0627\u06cc \u062f\u0633\u062a\u0647 \u0627\u06cc \u062f\u0631 \u0633\u0627\u0639\u0627\u062a \u067e\u06cc\u06a9 \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u0646\u0627\u0633\u0628 \u0628\u0631\u0627\u06cc \u06a9\u0627\u0647\u0634 \u0627\u0633\u06a9\u0646 \u0648 \u0642\u0641\u0644 \u06af\u0633\u062a\u0631\u062f\u0647 \u0633\u0637\u062d \u0627\u06cc\u0632\u0648\u0644\u06cc\u0634\u0646 \u0645\u0646\u0627\u0633\u0628 (\u0628\u0633\u062a\u0647 \u0628\u0647 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633) \u0628\u062e\u0634 \u06f6: \u0646\u06af\u0647\u062f\u0627\u0631\u06cc (Maintenance)\u061b \u0686\u06cc\u0632\u06cc \u06a9\u0647 \u0645\u0639\u0645\u0648\u0644\u0627 \u0641\u0631\u0627\u0645\u0648\u0634 \u0645\u06cc \u0634\u0648\u062f \u0628\u0647 \u0631\u0648\u0632 \u0628\u0648\u062f\u0646 \u0622\u0645\u0627\u0631 (Statistics): \u0628\u0631\u0627\u06cc \u067e\u0644\u0646 \u062f\u0631\u0633\u062a \u062d\u06cc\u0627\u062a\u06cc \u0627\u0633\u062a (\u062e\u0635\u0648\u0635\u0627 SQL Server) Fragmentation: \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627\u06cc \u0628\u0647 \u0647\u0645 \u0631\u06cc\u062e\u062a\u0647 \u0631\u0648\u06cc I\/O \u0627\u062b\u0631 \u062f\u0627\u0631\u0646\u062f Cleanup: \u062d\u0630\u0641 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0642\u062f\u06cc\u0645\u06cc\u060c \u0622\u0631\u0634\u06cc\u0648 Backup strategy: \u0628\u06a9\u0627\u067e \u0633\u0646\u06af\u06cc\u0646 \u062f\u0631 \u0633\u0627\u0639\u062a \u067e\u06cc\u06a9 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u06a9\u0646\u062f\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f \u0628\u062e\u0634 \u06f7: \u0632\u06cc\u0631\u0633\u0627\u062e\u062a \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 (\u0648\u0642\u062a\u06cc Query \u062f\u0631\u0633\u062a \u0627\u0633\u062a \u0648\u0644\u06cc \u0647\u0646\u0648\u0632 \u06a9\u0646\u062f \u0627\u0633\u062a) \u0645\u0648\u0627\u0631\u062f \u0645\u0647\u0645 Disk \u0633\u0631\u06cc\u0639 (NVMe) \u0628\u0631\u0627\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u062d\u06cc\u0627\u062a\u06cc \u0627\u0633\u062a RAM \u06a9\u0627\u0641\u06cc \u0628\u0631\u0627\u06cc buffer pool \u062c\u062f\u0627 \u06a9\u0631\u062f\u0646 \u062f\u06cc\u0633\u06a9 \u062f\u06cc\u062a\u0627 \u0648 \u0644\u0627\u06af (\u062f\u0631 \u0628\u0631\u062e\u06cc \u0633\u0646\u0627\u0631\u06cc\u0648\u0647\u0627) \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0627\u0646\u06a9\u0634\u0646 \u067e\u0648\u0644\u06cc\u0646\u06af (Application side) Replica \u0628\u0631\u0627\u06cc \u062e\u0648\u0627\u0646\u062f\u0646 (Read scaling) Sharding \u0641\u0642\u0637 \u0648\u0642\u062a\u06cc \u0644\u0627\u0632\u0645 \u0627\u0633\u062a (\u067e\u06cc\u0686\u06cc\u062f\u0647 \u0648 \u067e\u0631\u0647\u0632\u06cc\u0646\u0647) \u0646\u0642\u0634\u0647 \u0631\u0627\u0647 \u067e\u06cc\u0634\u0646\u0647\u0627\u062f\u06cc (\u0639\u0645\u0644\u06cc \u0648 \u0645\u0631\u062d\u0644\u0647 \u0627\u06cc) \u0645\u0631\u062d\u0644\u0647 1: \u062a\u0634\u062e\u06cc\u0635 \u0633\u0631\u06cc\u0639 (Quick Wins) 10 \u06a9\u0648\u0626\u0631\u06cc \u06a9\u0646\u062f \u0627\u0648\u0644 \u0631\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f N+1 \u0631\u0627 \u062d\u0630\u0641 \u06a9\u0646\u06cc\u062f SELECT * \u0631\u0627 \u062d\u0630\u0641 \u06a9\u0646\u06cc\u062f \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627\u06cc \u0628\u062f\u06cc\u0647\u06cc \u0631\u0648\u06cc WHERE\/JOIN \u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631 \u0628\u06af\u0630\u0627\u0631\u06cc\u062f \u0645\u0631\u062d\u0644\u0647 2: \u0627\u0635\u0644\u0627\u062d \u0633\u0627\u062e\u062a\u0627\u0631\u06cc \u0628\u0627\u0632\u0637\u0631\u0627\u062d\u06cc \u062c\u062f\u0627\u0648\u0644 \u0645\u0634\u06a9\u0644 \u062f\u0627\u0631 \u0622\u0631\u0634\u06cc\u0648\/\u067e\u0627\u0631\u062a\u06cc\u0634\u0646 \u0628\u0646\u062f\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u062d\u062c\u06cc\u0645 \u06a9\u0634 \u0628\u0631\u0627\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u067e\u0631\u062a\u06a9\u0631\u0627\u0631 \u0645\u0631\u062d\u0644\u0647 3: \u0645\u0642\u06cc\u0627\u0633 \u0648 \u067e\u0627\u06cc\u062f\u0627\u0631\u06cc Replica \u062e\u0648\u0627\u0646\u062f\u0646\u06cc Job \u0647\u0627\u06cc async \u0628\u0631\u0627\u06cc \u06af\u0632\u0627\u0631\u0634 \u0645\u0627\u0646\u06cc\u062a\u0648\u0631\u06cc\u0646\u06af \u062f\u0627\u0626\u0645\u06cc + \u0628\u0648\u062f\u062c\u0647 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u062c\u0645\u0639 \u0628\u0646\u062f\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u0645\u0639\u0645\u0648\u0644\u0627 \u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0628\u0627\u0632\u062f\u0647 \u0631\u0627 \u062f\u0631 \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u062f\u0627\u0631\u062f\u060c \u0686\u0648\u0646: \u0645\u0633\u062a\u0642\u06cc\u0645 \u0631\u0648\u06cc \u0632\u0645\u0627\u0646 \u067e\u0627\u0633\u062e \u0633\u0631\u0648\u0631 \u0627\u062b\u0631 \u0645\u06cc \u06af\u0630\u0627\u0631\u062f \u0628\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u062e\u0648\u062f\u0634 \u0631\u0627 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0628\u0627 \u0686\u0646\u062f \u0627\u0635\u0644\u0627\u062d \u062f\u0631\u0633\u062a (Query + Index + Cache) \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0686\u0646\u062f \u0628\u0631\u0627\u0628\u0631 \u0628\u0647\u0628\u0648\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f \u0627\u06af\u0631 \u0627\u062d\u0633\u0627\u0633 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u0633\u0627\u06cc\u062a \u0634\u0645\u0627 \u0628\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u06cc\u0627 \u062f\u0627\u062f\u0647 \u0647\u0627 \u06a9\u0646\u062f \u0634\u062f\u0647\u060c \u06cc\u0627 \u0635\u0641\u062d\u0627\u062a \u062c\u0633\u062a\u062c\u0648 \u0648 \u067e\u0646\u0644 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0632\u0645\u0627\u0646 \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0644\u0648\u062f \u0634\u062f\u0646 \u0645\u06cc \u06af\u06cc\u0631\u0646\u062f\u060c \u062a\u06cc\u0645 \u0637\u0631\u0627\u062d\u0627\u0646 \u0646\u0648\u06cc\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0627 \u062a\u062d\u0644\u06cc\u0644 \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u060c \u0628\u0631\u0631\u0633\u06cc \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0647\u0627 \u0648 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0633\u0627\u062e\u062a\u0627\u0631 \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633\u060c \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0634\u0645\u0627 \u0631\u0627 \u0628\u0647 \u0634\u06a9\u0644 \u067e\u0627\u06cc\u062f\u0627\u0631 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0647\u062f. \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0648\u0631\u0647 \u0648 \u0628\u0631\u0631\u0633\u06cc \u0641\u0646\u06cc\u060c \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0635\u0641\u062d\u0647 \u062a\u0645\u0627\u0633 \u0628\u0627 \u0645\u0627 \u062f\u0631 \u0627\u0631\u062a\u0628\u0627\u0637 \u0628\u0627\u0634\u06cc\u062f.<\/p>\n","protected":false},"author":1,"featured_media":236,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,11],"tags":[120,96,119],"class_list":["post-235","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-3","category-11","tag-120","tag-96","tag-119"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633\u061b \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u06f8\u06f0\u066a \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0634\u0645\u0627 \u062f\u0631 \u0622\u0646 \u0646\u0647\u0641\u062a\u0647 \u0627\u0633\u062a | \u0646\u0648\u06cc\u0646 \u0647\u0627\u0628<\/title>\n<meta name=\"description\" content=\"\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u062f\u06cc\u062a\u0627\u0628\u06cc\u0633 \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0647\u0645 \u062a\u0631\u06cc\u0646 \u0639\u0648\u0627\u0645\u0644 \u0627\u0641\u0632\u0627\u06cc\u0634 \u0633\u0631\u0639\u062a \u0633\u0627\u06cc\u062a \u0627\u0633\u062a. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u062c\u0627\u0645\u0639 \u06cc\u0627\u062f \u0645\u06cc \u06af\u06cc\u0631\u06cc\u062f \u0686\u06af\u0648\u0646\u0647 \u0628\u0627 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u06a9\u0648\u0626\u0631\u06cc \u0647\u0627\u060c \u0627\u06cc\u0646\u062f\u06a9\u0633 \u06af\u0630\u0627\u0631\u06cc \u0627\u0635\u0648\u0644\u06cc\u060c \u0637\u0631\u0627\u062d\u06cc \u062f\u0631\u0633\u062a \u062c\u062f\u0627\u0648\u0644\u060c \u06a9\u0634 \u0648 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0644\u0627\u06a9 \u0647\u0627\u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u0633\u0627\u06cc\u062a \u0631\u0627 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