In Postgres, all changes—such as inserting rows or modifying indexes—are recorded in the WAL. When a transaction commits, the WAL is flushed to disk to ensure durability, while table and index pages are flushed later by the background writer or during checkpoints. If a crash occurs, Postgres can replay changes from the WAL to restore consistency. The WAL sync metric reports the number of times these logs are flushed to disk.
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Italy offers endless delights, from the rugged Dolomite ranges to Sicily's golden coasts, encompassing ancient Roman remnants, masterful Renaissance creations, and sprawling wine estates. We invite you to recount your most treasured Italian encounter, be it a picturesque mountain village, a beloved coastal spot, an unforgettable trek, or an underrated art venue, museum, or heritage site.
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