SigNoz — Questions¶
Open and answered questions about SigNoz.
Open Questions¶
- What is the exact license classification? Enterprise features in
ee/directory have proprietary license — is the core truly open-source or source-available? → Check sources — seeee/LICENSEon GitHub - How does SigNoz handle ClickHouse schema migrations during upgrades? → Check upgrade docs
- What is the maximum practical ClickHouse cluster size SigNoz has been tested with? → Community reports needed
- How does OpAMP handle collector reconfiguration failure (rollback behavior)? → Check OpAMP docs
- Can SigNoz ingest Prometheus recording rules directly? → Check PromQL compatibility
Answered Questions¶
- What storage backend does SigNoz use? → ClickHouse only. See observability/signoz/index#Architecture.
- Does SigNoz support PromQL? → Yes, for metrics queries. Translated to ClickHouse SQL by the query service.
- How does SigNoz handle high cardinality? → ClickHouse columnar storage eliminates index explosion. See observability/signoz/benchmarks.
- What cloud instance types are recommended? → T3/T4g (general), C5/C6g/C7g (ClickHouse). See observability/signoz/benchmarks#Cloud Instance Recommendations.
- Does SigNoz support RUM? → Yes, Core Web Vitals (LCP, INP, CLS) via browser SDK.