How Klaviyo uses a 192-node ClickHouse cluster for real-time segmentation and personalization

T1Covered by 1 source · first reported by Databricks / ClickHouse / DuckDB / Supabase / Neon / PlanetScale at 05 Aug 2025, 16:55 UTC

“Our customers want to identify trends in their customer base and interact meaningfully with their customers. ClickHouse powers the engine for that.” Patrick McGrath, Lead Software Engineer

Sources

• T1How Klaviyo uses a 192-node ClickHouse cluster for real-time segmentation and personalizationDatabricks / ClickHouse / DuckDB / Supabase / Neon / PlanetScale05 Aug 2025, 16:55