Postgres 18 gets Async IO

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The Backend Engineering Show with Hussein Nasser not yet transcribed

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Recorded03 Oct 2025

Publisheranchor.fm ↗

Handlerec:9885755

Show notes

Postgres 18 has been released with many exciting features such as UUIDv7, Over explain module, composite index skip scans, and the most anticipated asynchronous IO with worker and io_uring mode which I uncover in this show. Hope you enjoy it0:00 Intro1:30 Synchronous vs Asynchronous calls3:00 Synchronous IO6:30 Asynchronous IO10:00 Postgres 17 synchronous io 17:20 The challenge of Async IO in Postgres 1820:00 io_method worker23:00 io_method io_uring29:30 io_method sync 31:08 Async IO isn’t done! 31:30 Support for backend writers32:36 Improve worker io_method33:00 direct io support 37:00 Summary

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