ClickHouse
8 production projects and 1 rule set built with ClickHouse.
AGENTS.md Rules & Agent Skills
Production Projects
Cosmo (WunderGraph)
Open-source GraphQL federation gateway and router written in Go. Compiles subgraphs into unified declarative execution plans with sub-millisecond routing overhead, zero-allocation request pipelines, OTEL distributed tracing, and ClickHouse-backed analytics.
Vector
Ultra-high throughput observability pipeline by Datadog; Rust guarantees minimal memory footprint and zero GC pauses during gigabyte/sec telemetry ingestion.
Lago
Open-source usage-based billing infrastructure; high-throughput Go event ingester paired with Ruby on Rails subscription ledger.
Sentry
Enterprise observability; Django handles transactional models while high-volume event ingestion is streamed via Kafka to ClickHouse.
Langfuse
Specialized LLM tracing platform: high-volume generation logs streamed into ClickHouse for cost and latency analytics.
Plausible Analytics
BEAM concurrency engine handles massive ingestion surges with minimal memory footprint into ClickHouse.
PostHog
Billions of events/month: ingest through Kafka into ClickHouse columnar storage while keeping UI on Django/Postgres.
Umami
Solo developer, fast MVP: single framework, single deploy target, optional ClickHouse for scale.
Often Used With
Frequently Asked Questions
How many production projects use ClickHouse?
8 verified production projects in the STACK IT FAST directory use ClickHouse, each with a full architecture breakdown.
What is ClickHouse most often used with?
Across projects in the directory, ClickHouse is most commonly paired with PostgreSQL, Redis, Kafka.
Is there an AGENTS.md rule or Claude Code skill for ClickHouse?
Yes — Next.js + ClickHouse + Prisma (Analytics & Observability) includes a full AGENTS.md, CLAUDE.md, Cursor .mdc rule set and an installable SKILL.md covering ClickHouse.