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s02e14: PostgreSQL major upgrade что может пойти не так Гость: Александр Кукушкин

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Главный док (подробности, ссылки): - Апгрейд на 12 и 13 - Риски апгрейда - Analyze vs vacuum - Vacuum truncating last free pages - Patroni - failover failures - rsync - ANALYZE in stages vs. per-column STATISTICS - Backups: - Don’t forget to change the destination (bucket or folder) - Right after upgrade we have gap -- risk for DR -- until we do a new full backup - Planner behavior, version specific: - 11: parallelization by default - 12: CTE -- “MATERIALIZED” - 13: JIT enabled by default -- turn off if OLTP? - More (not covered in this episode): - Execution plan flips и что с ними делать - - - https://githu

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