GreptimeDB
Apache-2.0 metrics, logs and traces database
Observability / Observability · Apache-2.0 · 6.7k
Reviewed 2026-10-18 · last push 2026-10-19 · repo checked 2026-10-19
What's Good
Apache-2.0 core (GreptimeTeam/greptimedb), release v1.2.1 (2026-09-16), written in Rust. Ingest via OpenTelemetry, Prometheus Remote Write, Loki Push or Elasticsearch Bulk, then query with SQL or PromQL. All signals share one table model (tags, timestamp, fields), so trace IDs join logs to spans. You can migrate one signal at a time without changing collectors. ★~6.7k.
The Catch
It is a younger system than Prometheus, Loki or ClickHouse, and the README says the core is Apache-2.0 — some enterprise and cloud features are commercial. Grafana integration works but is less native than Mimir/Loki. Plan object-storage costs and compaction.
Verdict
An interesting one-engine alternative to the Prometheus + Loki + Tempo trio.
Embed
Maintainer? Add the badge to your README. It is free, links to this review, and there is no paid version.
Markdown
[](https://stackgems.com/gems/greptimedb)
HTML
<a href="https://stackgems.com/gems/greptimedb"><img src="https://stackgems.com/badge/greptimedb.svg" alt="GreptimeDB reviewed on Stack Gems" height="20"></a>