{"id":85988,"date":"2024-11-29T11:50:43","date_gmt":"2024-11-29T08:20:43","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/aurora-limitless-global-consistency-acid-1m62\/"},"modified":"2024-11-29T11:50:43","modified_gmt":"2024-11-29T08:20:43","slug":"aurora-limitless-global-consistency-acid-1m62","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/aurora-limitless-global-consistency-acid-1m62\/","title":{"rendered":"Aurora Limitless – \u0633\u0627\u0632\u06af\u0627\u0631\u06cc \u062c\u0647\u0627\u0646\u06cc (ACID)"},"content":{"rendered":"

Summarize this content to 400 words in Persian Lang
\n \u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u067e\u0633\u062a\u200c\u0647\u0627\u06cc \u0642\u0628\u0644\u06cc \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647 \u0645\u0648\u0631\u062f \u0628\u062d\u062b \u0642\u0631\u0627\u0631 \u06af\u0631\u0641\u062a\u060c \u0628\u0627 \u062f\u06cc\u06af\u0631 \u0631\u0627\u0647\u200c\u062d\u0644\u200c\u0647\u0627\u06cc \u0627\u0634\u062a\u0631\u0627\u06a9\u200c\u06af\u0630\u0627\u0631\u06cc \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0628\u0631\u0627\u06cc PostgreSQL\u060c \u0645\u0627\u0646\u0646\u062f Citus\u060c \u0642\u0627\u0628\u0644 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0627\u0633\u062a. \u0645\u0627 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627\u06cc \u0645\u0634\u0627\u0628\u0647\u06cc \u0631\u0627 \u062f\u0631 \u0645\u0648\u0631\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0648 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u0634\u0627\u0631\u062f \u0630\u06a9\u0631 \u06a9\u0631\u062f\u0647 \u0627\u06cc\u0645. \u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644\u060c \u06cc\u06a9 \u062a\u0641\u0627\u0648\u062a \u0645\u0647\u0645 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f: \u062f\u0631 Citus\u060c \u0642\u0631\u0627\u0626\u062a \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u06cc\u06a9\u067e\u0627\u0631\u0686\u06af\u06cc \u0646\u0647\u0627\u06cc\u06cc \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u0646\u062f (\u0628\u0647 \u0645\u062b\u0627\u0644\u06cc \u062f\u0631 \u0686\u06af\u0648\u0646\u0647 ACID Citus \u0627\u0633\u062a\u061f \u0645\u0631\u0627\u062c\u0639\u0647 \u06a9\u0646\u06cc\u062f). \u062f\u0631 \u0645\u0642\u0627\u0628\u0644\u060c \u0642\u0631\u0627\u0626\u062a \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u062f\u0631 Aurora Limitless \u0628\u0647 \u0634\u062f\u062a \u0633\u0627\u0632\u06af\u0627\u0631 \u0627\u0633\u062a.<\/p>\n

\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627 \u062c\u062f\u0627\u0648\u0644 PgBench \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u062f\u0631 \u067e\u0633\u062a \u0642\u0628\u0644\u06cc\u060c \u0647\u0645\u0627\u0646 \u0686\u06cc\u0632\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 How ACID is Citus\u061f<\/p>\n

\u0645\u0646 \u0645\u0648\u062c\u0648\u062f\u06cc \u0647\u0645\u0647 \u062d\u0633\u0627\u0628 \u0647\u0627 \u0631\u0627 \u0635\u0641\u0631 \u0645\u06cc \u06a9\u0646\u0645:<\/p>\n

postgres_limitless=> update pgbench_accounts set abalance=0;
\nUPDATE 100000
\npostgres_limitless=> select count(*),min(abalance),max(abalance),sum(abalance)
\n from pgbench_accounts;
\n count | min | max | sum
\n——–+—–+—–+—–
\n 100000 | 0 | 0 | 0
\n(1 row)<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0645\u0646 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0632\u06cc\u0631 \u0631\u0627 \u0627\u062c\u0631\u0627 \u0645\u06cc \u06a9\u0646\u0645 \u06a9\u0647 \u067e\u0648\u0644 \u0631\u0627 \u0627\u0632 \u06cc\u06a9 \u062d\u0633\u0627\u0628 \u0628\u0647 \u062d\u0633\u0627\u0628 \u062f\u06cc\u06af\u0631 \u0645\u0646\u062a\u0642\u0644 \u0645\u06cc \u06a9\u0646\u062f \u062a\u0627 \u0645\u062c\u0645\u0648\u0639 \u0645\u0648\u062c\u0648\u062f\u06cc \u0647\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u06a9\u0646\u062f:<\/p>\n

cat > \/tmp\/pgbench-acid.sql <<‘SQL’<\/p>\n

\\set aid1 random(1, 100000 * :scale)
\n\\set aid2 random(1, 100000 * :scale)
\n\\set delta random(-5000, 5000)
\nBEGIN;
\nUPDATE pgbench_accounts SET abalance = abalance + :delta WHERE aid = :aid1;
\nUPDATE pgbench_accounts SET abalance = abalance – :delta WHERE aid = :aid2;
\nEND;<\/p>\n

SQL<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0645\u0646 \u0627\u0628\u062a\u062f\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u0648\u062c\u0648\u062f\u06cc \u0627\u062c\u0631\u0627 \u06a9\u0631\u062f\u0645\u060c \u0627\u0645\u0627 \u0628\u0627 \u06cc\u06a9 \u062e\u0637\u0627\u06cc \u0642\u0641\u0644 \u062a\u0648\u0632\u06cc\u0639 \u0634\u062f\u0647 \u0645\u0648\u0627\u062c\u0647 \u0634\u062f\u0645:<\/p>\n

\\! pgbench -f \/tmp\/pgbench-acid.sql -T 300 -c 10 &<\/p>\n

postgres_limitless=> update pgbench_accounts set abalance=0`
\n;
\nERROR: aborting transaction participating in a distributed deadlock<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u06cc\u0646 \u0645\u062a\u0641\u0627\u0648\u062a \u0627\u0632 PostgreSQL \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u062c\u062f\u0627\u0633\u0627\u0632\u06cc Read Committed \u0627\u0646\u062a\u0638\u0627\u0631 \u0686\u0646\u06cc\u0646 \u062e\u0637\u0627\u06cc \u0642\u0627\u0628\u0644 \u0627\u0645\u062a\u062d\u0627\u0646 \u0645\u062c\u062f\u062f\u06cc \u0631\u0627 \u0646\u062f\u0627\u0631\u06cc\u062f.\u0628\u0631\u0627\u06cc \u062d\u0644 \u0627\u06cc\u0646 \u0645\u0634\u06a9\u0644\u060c \u0645\u0646 \u062c\u062f\u0648\u0644 \u0631\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u0642\u0641\u0644 \u06a9\u0631\u062f\u0645:<\/p>\n

begin transaction;
\nlock table pgbench_accounts in share mode;
\nupdate pgbench_accounts set abalance=0;
\ncommit;<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u067e\u0633 \u0627\u0632 \u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc \u0645\u0648\u062c\u0648\u062f\u06cc\u060c \u0648 \u0627\u062c\u0631\u0627\u06cc \u062a\u0631\u0627\u06a9\u0646\u0634 \u0627\u0646\u062a\u0642\u0627\u0644 \u062f\u0631 \u067e\u0633\u200c\u0632\u0645\u06cc\u0646\u0647\u060c \u06a9\u0644 \u0645\u0648\u062c\u0648\u062f\u06cc \u0631\u0627 \u067e\u0631\u0633 \u0648 \u062c\u0648 \u0645\u06cc\u200c\u06a9\u0646\u0645:<\/p>\n

select count(*),min(abalance),max(abalance),sum(abalance)
\n from pgbench_accounts;
\n\\watch 0.1<\/p>\n

\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n

\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n

\u0645\u062c\u0645\u0648\u0639 \u0647\u0645\u06cc\u0634\u0647 \u062b\u0627\u0628\u062a \u0645\u06cc \u0645\u0627\u0646\u062f\u060c \u06a9\u0647 \u06af\u0648\u0627\u0647 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0639\u06a9\u0633 \u0641\u0648\u0631\u06cc \u062b\u0627\u0628\u062a \u0645\u06cc \u062e\u0648\u0627\u0646\u062f:<\/p>\n

Aurora Limitless \u0627\u0632 \u0633\u0627\u0639\u062a \u062f\u06cc\u0648\u0627\u0631\u06cc \u0628\u0631\u0627\u06cc \u0645\u0642\u0627\u06cc\u0633\u0647 \u0632\u0645\u0627\u0646\u200c\u0647\u0627\u06cc \u062e\u0648\u0627\u0646\u062f\u0646 \u0628\u0627 \u0632\u0645\u0627\u0646\u200c\u0647\u0627\u06cc \u0627\u0631\u062a\u06a9\u0627\u0628 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0627\u0632 \u062e\u0648\u0627\u0646\u062f\u0646 \u0639\u06a9\u0633\u200c\u0647\u0627\u06cc \u0641\u0648\u0631\u06cc \u0627\u0632 \u0686\u0646\u062f\u06cc\u0646 \u0642\u0637\u0639\u0647 \u0645\u0637\u0645\u0626\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0633\u0627\u0639\u062a\u200c\u0647\u0627\u06cc \u0647\u0631 \u0642\u0637\u0639\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u0646\u062f \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u0646\u062f\u060c \u0628\u0631\u0627\u06cc \u062a\u0636\u0645\u06cc\u0646 \u062b\u0628\u0627\u062a\u060c \u0627\u0646\u062d\u0631\u0627\u0641 \u0633\u0627\u0639\u062a \u0631\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0645\u0634\u0627\u0628\u0647 \u0631\u0648\u0634\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062a\u0648\u0633\u0637 YugabyteDB \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0627\u062c\u0631\u0627\u06cc \u0628\u0631 \u0631\u0648\u06cc AWS \u0628\u0647 \u0644\u0637\u0641 Time Sync \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0632\u0645\u0627\u0646 \u0645\u062d\u062f\u0648\u062f\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0633\u0627\u0639\u062a \u0641\u0631\u0627\u0647\u0645 \u06a9\u0646\u062f\u060c \u0627\u0645\u06a9\u0627\u0646 \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u062f\u0642\u06cc\u0642 \u0632\u0645\u0627\u0646 \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f. \u0645\u0646 \u0627\u06cc\u0646 \u0631\u0627 \u062f\u0631 \u062f\u0633\u062a\u06cc\u0627\u0628\u06cc \u0628\u0647 \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u062f\u0642\u06cc\u0642 \u0633\u0627\u0639\u062a \u062f\u0631 AWS \u062a\u0648\u0636\u06cc\u062d \u062f\u0627\u062f\u0647 \u0627\u0645.<\/p>\n

\u0628\u0627 \u0627\u06cc\u0646 \u06a9\u0627\u0631\u060c Aurora Limitless \u0647\u0645\u0627\u0646 \u0645\u0639\u0646\u0627\u06cc \u062a\u0631\u0627\u06a9\u0646\u0634 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 PostgreSQL \u0628\u0631\u0627\u06cc Read Committed \u0648 Repeatable Read \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u06a9\u0646\u062f. Serializable \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0646\u0645\u06cc \u0634\u0648\u062f \u0632\u06cc\u0631\u0627 \u0628\u0647 \u06cc\u06a9 \u0645\u062f\u06cc\u0631 \u0642\u0641\u0644 \u062a\u0648\u0632\u06cc\u0639 \u0634\u062f\u0647 \u0628\u0631\u0627\u06cc \u0642\u0641\u0644 \u0647\u0627\u06cc \u0645\u062d\u0645\u0648\u0644 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u062f. \u062e\u0648\u0627\u0646\u062f\u0646 \u0627\u0632 \u0631\u0648\u062a\u0631 \u06cc\u06a9 \u0639\u06a9\u0633 \u0641\u0648\u0631\u06cc \u062b\u0627\u0628\u062a \u0627\u0632 \u0647\u0645\u0647 \u062e\u0631\u062f\u0647 \u0647\u0627 \u062f\u0631\u06cc\u0627\u0641\u062a \u0645\u06cc \u06a9\u0646\u062f. \u0631\u0627\u06cc\u062a \u0647\u0627 \u0627\u0632 \u06cc\u06a9 commit \u062f\u0648 \u0641\u0627\u0632\u06cc (2PC) \u0628\u0627 \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u062e\u0648\u062f\u06a9\u0627\u0631 \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627\u06cc \u0645\u0639\u0644\u0642 \u062f\u0631 \u0635\u0648\u0631\u062a \u0634\u06a9\u0633\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n

\n

\u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u067e\u0633\u062a\u200c\u0647\u0627\u06cc \u0642\u0628\u0644\u06cc \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647 \u0645\u0648\u0631\u062f \u0628\u062d\u062b \u0642\u0631\u0627\u0631 \u06af\u0631\u0641\u062a\u060c \u0628\u0627 \u062f\u06cc\u06af\u0631 \u0631\u0627\u0647\u200c\u062d\u0644\u200c\u0647\u0627\u06cc \u0627\u0634\u062a\u0631\u0627\u06a9\u200c\u06af\u0630\u0627\u0631\u06cc \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0628\u0631\u0627\u06cc PostgreSQL\u060c \u0645\u0627\u0646\u0646\u062f Citus\u060c \u0642\u0627\u0628\u0644 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0627\u0633\u062a. \u0645\u0627 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627\u06cc \u0645\u0634\u0627\u0628\u0647\u06cc \u0631\u0627 \u062f\u0631 \u0645\u0648\u0631\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0648 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u0634\u0627\u0631\u062f \u0630\u06a9\u0631 \u06a9\u0631\u062f\u0647 \u0627\u06cc\u0645. \u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644\u060c \u06cc\u06a9 \u062a\u0641\u0627\u0648\u062a \u0645\u0647\u0645 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f: \u062f\u0631 Citus\u060c \u0642\u0631\u0627\u0626\u062a \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u06cc\u06a9\u067e\u0627\u0631\u0686\u06af\u06cc \u0646\u0647\u0627\u06cc\u06cc \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u0646\u062f (\u0628\u0647 \u0645\u062b\u0627\u0644\u06cc \u062f\u0631 \u0686\u06af\u0648\u0646\u0647 ACID Citus \u0627\u0633\u062a\u061f \u0645\u0631\u0627\u062c\u0639\u0647 \u06a9\u0646\u06cc\u062f). \u062f\u0631 \u0645\u0642\u0627\u0628\u0644\u060c \u0642\u0631\u0627\u0626\u062a \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u062f\u0631 Aurora Limitless \u0628\u0647 \u0634\u062f\u062a \u0633\u0627\u0632\u06af\u0627\u0631 \u0627\u0633\u062a.<\/p>\n

\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627 \u062c\u062f\u0627\u0648\u0644 PgBench \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u062f\u0631 \u067e\u0633\u062a \u0642\u0628\u0644\u06cc\u060c \u0647\u0645\u0627\u0646 \u0686\u06cc\u0632\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 How ACID is Citus\u061f<\/p>\n

\u0645\u0646 \u0645\u0648\u062c\u0648\u062f\u06cc \u0647\u0645\u0647 \u062d\u0633\u0627\u0628 \u0647\u0627 \u0631\u0627 \u0635\u0641\u0631 \u0645\u06cc \u06a9\u0646\u0645:<\/p>\n

\n
postgres_limitless<\/span>=><\/span> update<\/span> pgbench_accounts<\/span> set<\/span> abalance<\/span>=<\/span>0<\/span>;<\/span>\nUPDATE<\/span> 100000<\/span>\npostgres_limitless<\/span>=><\/span> select<\/span> count<\/span>(<\/span>*<\/span>),<\/span>min<\/span>(<\/span>abalance<\/span>),<\/span>max<\/span>(<\/span>abalance<\/span>),<\/span>sum<\/span>(<\/span>abalance<\/span>)<\/span>\n from<\/span> pgbench_accounts<\/span>;<\/span>\n count<\/span>  |<\/span> min<\/span> |<\/span> max<\/span> |<\/span> sum<\/span>\n--------+-----+-----+-----<\/span>\n 100000<\/span> |<\/span>   0<\/span> |<\/span>   0<\/span> |<\/span>   0<\/span>\n(<\/span>1<\/span> row<\/span>)<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0645\u0646 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0632\u06cc\u0631 \u0631\u0627 \u0627\u062c\u0631\u0627 \u0645\u06cc \u06a9\u0646\u0645 \u06a9\u0647 \u067e\u0648\u0644 \u0631\u0627 \u0627\u0632 \u06cc\u06a9 \u062d\u0633\u0627\u0628 \u0628\u0647 \u062d\u0633\u0627\u0628 \u062f\u06cc\u06af\u0631 \u0645\u0646\u062a\u0642\u0644 \u0645\u06cc \u06a9\u0646\u062f \u062a\u0627 \u0645\u062c\u0645\u0648\u0639 \u0645\u0648\u062c\u0648\u062f\u06cc \u0647\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u06a9\u0646\u062f:<\/p>\n
\n
cat<\/span> ><\/span> \/<\/span>tmp<\/span>\/<\/span>pgbench<\/span>-<\/span>acid<\/span>.<\/span>sql<\/span> <<<\/span>'SQL'<\/span>\n\n\\<\/span>set<\/span> aid1<\/span> random<\/span>(<\/span>1<\/span>,<\/span> 100000<\/span> *<\/span> :<\/span>scale<\/span>)<\/span>\n\\<\/span>set<\/span> aid2<\/span> random<\/span>(<\/span>1<\/span>,<\/span> 100000<\/span> *<\/span> :<\/span>scale<\/span>)<\/span>\n\\<\/span>set<\/span> delta<\/span> random<\/span>(<\/span>-<\/span>5000<\/span>,<\/span> 5000<\/span>)<\/span>\nBEGIN<\/span>;<\/span>\nUPDATE<\/span> pgbench_accounts<\/span> SET<\/span> abalance<\/span> =<\/span> abalance<\/span> +<\/span> :<\/span>delta<\/span> WHERE<\/span> aid<\/span> =<\/span> :<\/span>aid1<\/span>;<\/span>\nUPDATE<\/span> pgbench_accounts<\/span> SET<\/span> abalance<\/span> =<\/span> abalance<\/span> -<\/span> :<\/span>delta<\/span> WHERE<\/span> aid<\/span> =<\/span> :<\/span>aid2<\/span>;<\/span>\nEND<\/span>;<\/span>\n\nSQL<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0645\u0646 \u0627\u0628\u062a\u062f\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u0648\u062c\u0648\u062f\u06cc \u0627\u062c\u0631\u0627 \u06a9\u0631\u062f\u0645\u060c \u0627\u0645\u0627 \u0628\u0627 \u06cc\u06a9 \u062e\u0637\u0627\u06cc \u0642\u0641\u0644 \u062a\u0648\u0632\u06cc\u0639 \u0634\u062f\u0647 \u0645\u0648\u0627\u062c\u0647 \u0634\u062f\u0645:<\/p>\n
\n
\\<\/span>!<\/span> pgbench<\/span> -<\/span>f<\/span> \/<\/span>tmp<\/span>\/<\/span>pgbench<\/span>-<\/span>acid<\/span>.<\/span>sql<\/span> -<\/span>T<\/span> 300<\/span> -<\/span>c<\/span> 10<\/span> &<\/span>\n\npostgres_limitless<\/span>=><\/span> update<\/span> pgbench_accounts<\/span> set<\/span> abalance<\/span>=<\/span>0<\/span>`\n;\nERROR:  aborting transaction participating in a distributed deadlock\n<\/span><\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u0646 \u0645\u062a\u0641\u0627\u0648\u062a \u0627\u0632 PostgreSQL \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u062c\u062f\u0627\u0633\u0627\u0632\u06cc Read Committed \u0627\u0646\u062a\u0638\u0627\u0631 \u0686\u0646\u06cc\u0646 \u062e\u0637\u0627\u06cc \u0642\u0627\u0628\u0644 \u0627\u0645\u062a\u062d\u0627\u0646 \u0645\u062c\u062f\u062f\u06cc \u0631\u0627 \u0646\u062f\u0627\u0631\u06cc\u062f.
\u0628\u0631\u0627\u06cc \u062d\u0644 \u0627\u06cc\u0646 \u0645\u0634\u06a9\u0644\u060c \u0645\u0646 \u062c\u062f\u0648\u0644 \u0631\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc \u0642\u0641\u0644 \u06a9\u0631\u062f\u0645:<\/p>\n
\n
begin<\/span> transaction<\/span>;<\/span>\nlock<\/span> table<\/span> pgbench_accounts<\/span> in<\/span> share<\/span> mode<\/span>;<\/span>\nupdate<\/span> pgbench_accounts<\/span> set<\/span> abalance<\/span>=<\/span>0<\/span>;<\/span>\ncommit<\/span>;<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u067e\u0633 \u0627\u0632 \u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc \u0645\u0648\u062c\u0648\u062f\u06cc\u060c \u0648 \u0627\u062c\u0631\u0627\u06cc \u062a\u0631\u0627\u06a9\u0646\u0634 \u0627\u0646\u062a\u0642\u0627\u0644 \u062f\u0631 \u067e\u0633\u200c\u0632\u0645\u06cc\u0646\u0647\u060c \u06a9\u0644 \u0645\u0648\u062c\u0648\u062f\u06cc \u0631\u0627 \u067e\u0631\u0633 \u0648 \u062c\u0648 \u0645\u06cc\u200c\u06a9\u0646\u0645:<\/p>\n
\n
select<\/span> count<\/span>(<\/span>*<\/span>),<\/span>min<\/span>(<\/span>abalance<\/span>),<\/span>max<\/span>(<\/span>abalance<\/span>),<\/span>sum<\/span>(<\/span>abalance<\/span>)<\/span> \n from<\/span> pgbench_accounts<\/span>;<\/span>\n\\<\/span>watch<\/span> 0<\/span>.<\/span>1<\/span>\n<\/code><\/pre>\n
\n
\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0645\u062c\u0645\u0648\u0639 \u0647\u0645\u06cc\u0634\u0647 \u062b\u0627\u0628\u062a \u0645\u06cc \u0645\u0627\u0646\u062f\u060c \u06a9\u0647 \u06af\u0648\u0627\u0647 \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0639\u06a9\u0633 \u0641\u0648\u0631\u06cc \u062b\u0627\u0628\u062a \u0645\u06cc \u062e\u0648\u0627\u0646\u062f:<\/p>\n
<\/p>\n
Aurora Limitless \u0627\u0632 \u0633\u0627\u0639\u062a \u062f\u06cc\u0648\u0627\u0631\u06cc \u0628\u0631\u0627\u06cc \u0645\u0642\u0627\u06cc\u0633\u0647 \u0632\u0645\u0627\u0646\u200c\u0647\u0627\u06cc \u062e\u0648\u0627\u0646\u062f\u0646 \u0628\u0627 \u0632\u0645\u0627\u0646\u200c\u0647\u0627\u06cc \u0627\u0631\u062a\u06a9\u0627\u0628 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f \u0648 \u0627\u0632 \u062e\u0648\u0627\u0646\u062f\u0646 \u0639\u06a9\u0633\u200c\u0647\u0627\u06cc \u0641\u0648\u0631\u06cc \u0627\u0632 \u0686\u0646\u062f\u06cc\u0646 \u0642\u0637\u0639\u0647 \u0645\u0637\u0645\u0626\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0633\u0627\u0639\u062a\u200c\u0647\u0627\u06cc \u0647\u0631 \u0642\u0637\u0639\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u0646\u062f \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u0646\u062f\u060c \u0628\u0631\u0627\u06cc \u062a\u0636\u0645\u06cc\u0646 \u062b\u0628\u0627\u062a\u060c \u0627\u0646\u062d\u0631\u0627\u0641 \u0633\u0627\u0639\u062a \u0631\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0645\u0634\u0627\u0628\u0647 \u0631\u0648\u0634\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062a\u0648\u0633\u0637 YugabyteDB \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0627\u062c\u0631\u0627\u06cc \u0628\u0631 \u0631\u0648\u06cc AWS \u0628\u0647 \u0644\u0637\u0641 Time Sync \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0632\u0645\u0627\u0646 \u0645\u062d\u062f\u0648\u062f\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0633\u0627\u0639\u062a \u0641\u0631\u0627\u0647\u0645 \u06a9\u0646\u062f\u060c \u0627\u0645\u06a9\u0627\u0646 \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u062f\u0642\u06cc\u0642 \u0632\u0645\u0627\u0646 \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc \u06a9\u0646\u062f. \u0645\u0646 \u0627\u06cc\u0646 \u0631\u0627 \u062f\u0631 \u062f\u0633\u062a\u06cc\u0627\u0628\u06cc \u0628\u0647 \u0647\u0645\u06af\u0627\u0645 \u0633\u0627\u0632\u06cc \u062f\u0642\u06cc\u0642 \u0633\u0627\u0639\u062a \u062f\u0631 AWS \u062a\u0648\u0636\u06cc\u062d \u062f\u0627\u062f\u0647 \u0627\u0645.<\/p>\n
\u0628\u0627 \u0627\u06cc\u0646 \u06a9\u0627\u0631\u060c Aurora Limitless \u0647\u0645\u0627\u0646 \u0645\u0639\u0646\u0627\u06cc \u062a\u0631\u0627\u06a9\u0646\u0634 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 PostgreSQL \u0628\u0631\u0627\u06cc Read Committed \u0648 Repeatable Read \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u06a9\u0646\u062f. Serializable \u067e\u0634\u062a\u06cc\u0628\u0627\u0646\u06cc \u0646\u0645\u06cc \u0634\u0648\u062f \u0632\u06cc\u0631\u0627 \u0628\u0647 \u06cc\u06a9 \u0645\u062f\u06cc\u0631 \u0642\u0641\u0644 \u062a\u0648\u0632\u06cc\u0639 \u0634\u062f\u0647 \u0628\u0631\u0627\u06cc \u0642\u0641\u0644 \u0647\u0627\u06cc \u0645\u062d\u0645\u0648\u0644 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u062f. \u062e\u0648\u0627\u0646\u062f\u0646 \u0627\u0632 \u0631\u0648\u062a\u0631 \u06cc\u06a9 \u0639\u06a9\u0633 \u0641\u0648\u0631\u06cc \u062b\u0627\u0628\u062a \u0627\u0632 \u0647\u0645\u0647 \u062e\u0631\u062f\u0647 \u0647\u0627 \u062f\u0631\u06cc\u0627\u0641\u062a \u0645\u06cc \u06a9\u0646\u062f. \u0631\u0627\u06cc\u062a \u0647\u0627 \u0627\u0632 \u06cc\u06a9 commit \u062f\u0648 \u0641\u0627\u0632\u06cc (2PC) \u0628\u0627 \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u062e\u0648\u062f\u06a9\u0627\u0631 \u062a\u0631\u0627\u06a9\u0646\u0634 \u0647\u0627\u06cc \u0645\u0639\u0644\u0642 \u062f\u0631 \u0635\u0648\u0631\u062a \u0634\u06a9\u0633\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
Summarize this content to 400 words in Persian Lang \u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u067e\u0633\u062a\u200c\u0647\u0627\u06cc \u0642\u0628\u0644\u06cc \u0627\u06cc\u0646 \u0645\u062c\u0645\u0648\u0639\u0647 \u0645\u0648\u0631\u062f \u0628\u062d\u062b \u0642\u0631\u0627\u0631 \u06af\u0631\u0641\u062a\u060c \u0628\u0627 \u062f\u06cc\u06af\u0631 \u0631\u0627\u0647\u200c\u062d\u0644\u200c\u0647\u0627\u06cc \u0627\u0634\u062a\u0631\u0627\u06a9\u200c\u06af\u0630\u0627\u0631\u06cc \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0628\u0631\u0627\u06cc PostgreSQL\u060c \u0645\u0627\u0646\u0646\u062f Citus\u060c \u0642\u0627\u0628\u0644 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0627\u0633\u062a. \u0645\u0627 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a \u0647\u0627\u06cc \u0645\u0634\u0627\u0628\u0647\u06cc \u0631\u0627 \u062f\u0631 \u0645\u0648\u0631\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0648 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0637\u0639 \u0634\u0627\u0631\u062f \u0630\u06a9\u0631 \u06a9\u0631\u062f\u0647 \u0627\u06cc\u0645. \u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644\u060c \u06cc\u06a9 \u062a\u0641\u0627\u0648\u062a \u0645\u0647\u0645 …<\/p>\n","protected":false},"author":2,"featured_media":85989,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-85988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/85988","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=85988"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/85988\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/85989"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=85988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=85988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=85988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}