whichdb
vs

ClickHouse vs SigNoz

ClickHouse: Open-source columnar OLAP database known for very fast aggregations over billions of rows. SigNoz: OpenTelemetry-native APM and observability platform storing logs, metrics and traces in ClickHouse.

key differences

  • ClickHouse is built for larger datasets (Multi-PB) than SigNoz (≤ 1 PB).
  • Transactions: ClickHouse offers limited ACID; SigNoz offers none.
  • Only ClickHouse has secondary indexes, full-text search, vector search, geospatial, materialized views.
  • ClickHouse has a serverless option; SigNoz does not.

choose clickhouse for

  • +Product and web analytics
  • +Log and observability backends
  • +Real-time dashboards over event streams
  • +Time-series and IoT metrics at scale

best at · Real-time analytics, OLAP, Observability

choose signoz for

  • +Self-hosted Datadog or New Relic replacement
  • +OpenTelemetry backend for microservices
  • +APM with trace-to-log correlation
  • +Kubernetes infrastructure monitoring

best at · Observability, Real-time analytics

ClickHouseOpen-source columnar OLAP database known for very fast aggregations over billions of rows.
SigNozOpenTelemetry-native APM and observability platform storing logs, metrics and traces in ClickHouse.
overview
Primary model
Columnar / OLAP
Columnar / OLAP
Also supports
Relational, Document, Vector, Time-Series
Time-Series
Type
Database engine
Backend platform
Status
Active
Active
Developer
ClickHouse, Inc.
SigNoz Inc.
First release
2016
2021
Latest version
26.10.2.103 (Oct 24, 2026)
0.147.0 (Oct 22, 2026)
License
Open source (permissive)Apache License 2.0
Open source (permissive)MIT (core) with separately licensed enterprise directory
Free tier
✓
✓
popularity
WhichDB Score
69.8
17.0
Rank
#10
#195
GitHub stars
50.6K
32.5K
Stack Overflow questions
2.2K
–
scale & guarantees
Comfortable data size
Massive (Multi-PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
Read replicas
None
ACID
Limited
None
Consistency
Eventual
Eventual
Schema
Strict
Schemaless
Architecture
Distributed, Shared storage, Single node, Client server
Distributed, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
✓
Serverless
✓
—
Embedded
—
—
Edge
—
—
Clouds
AWS, Google Cloud, Azure, Alibaba Cloud, Tencent Cloud, Aiven
AWS
capabilities
Transactions
—
—
Joins
✓
✓
Secondary indexes
✓
—
Full-text search
✓
—
Vector search
✓
—
Geospatial
✓
—
JSON
✓
✓
Change data capture
—
—
Triggers
—
—
Stored procedures
—
—
Materialized views
✓
—
TTL / expiry
✓
✓
Pub/Sub
—
—
Columnar storage
✓
✓
In-memory
—
—
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
✓
—
Role-based access
✓
✓
Time travel
—
—
Branching
—
—
Online schema changes
✓
—
Streaming ingest
✓
✓
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL (ClickHouse dialect), PRQL, KQL (experimental)
SQL (ClickHouse), PromQL, Query builder
Client languages
Python, Go, Java, JavaScript, Rust, C++, C#
–
Best for
Real-time analytics, OLAP, Observability, Warehouse
Observability, Real-time analytics
Add more to this comparisonNot sure either fits? Try smart match

ClickHouse vs SigNoz: FAQ

What is the difference between ClickHouse and SigNoz?

ClickHouse: Open-source columnar OLAP database known for very fast aggregations over billions of rows. SigNoz: OpenTelemetry-native APM and observability platform storing logs, metrics and traces in ClickHouse. ClickHouse is built for larger datasets (Multi-PB) than SigNoz (≤ 1 PB). Transactions: ClickHouse offers limited ACID; SigNoz offers none. Only ClickHouse has secondary indexes, full-text search, vector search, geospatial, materialized views.

When should I choose ClickHouse over SigNoz?

Choose ClickHouse for product and web analytics; log and observability backends; and real-time dashboards over event streams. Choose SigNoz for self-hosted Datadog or New Relic replacement, OpenTelemetry backend for microservices and APM with trace-to-log correlation.

Is ClickHouse or SigNoz more popular?

ClickHouse ranks #10 on the WhichDB Score (69.8/100) and SigNoz ranks #195 (17.0/100). Popularity is not fit: check the requirements that matter for your project.

Are ClickHouse and SigNoz open source?

Yes. ClickHouse is open source. License: Apache License 2.0. Yes. SigNoz is open source. License: MIT (core) with separately licensed enterprise directory.