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what is direct io and why does clickhouse managed postgres use it for backups

Engineering

What is direct I/O, and why does ClickHouse Managed Postgres use it for backups?

ClickHouse Managed Postgres uses direct I/O and stripe-sized reads to keep backups fast while protecting the page cache and query latency.

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Kaushik Iska
Oct 2, 2026 · 21 minutes read
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ClickHouse · Sep 23, 2026
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