ClickHouse Parallel Replicas Deliver Sub-Second Aggregation on 100 Billion Rows

ClickHouse's new parallel replicas feature, now in beta on ClickHouse Cloud and heading to GA, allows a single query to scale out across replicas, enabling sub-second GROUP BY aggregation over 100 billion rows.

2026-10-18 ~ 2026-10-18 · 2 related posts

• ClickHouse aggregates 100B rows in 0.4s with parallel replicas auto-scaling — Abhishekcur · 2026-10-18

1 near-duplicate retellings: Abhishekcur