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Introducing WalShadow: Sub-second Postgres replication to ClickHouse from physical WAL

WalShadow replicates Postgres data directly from physical WAL into ClickHouse, delivering around 200 ms latency and 289,000 rows per second in benchmarks.

Sai Srirampur
Sai Srirampur
Sep 10, 2026 · 7 minutes read
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