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CnosDB vs openGemini

CnosDB: Rust cloud-native time-series database with SQL on DataFusion and InfluxDB-style ingestion. openGemini: CNCF sandbox distributed time-series database from Huawei Cloud, compatible with InfluxQL.

key differences

  • Licensing: CnosDB is open source (copyleft) (GNU AGPL v3.0); openGemini is open source (permissive) (Apache License 2.0).
  • Only CnosDB has joins.

choose cnosdb for

  • +Energy and utility telemetry
  • +IoT platforms needing multi-tenancy
  • +Replacing InfluxDB 1.x with a SQL-capable engine

best at · Time-series, IoT, Observability

choose opengemini for

  • +Scaling out InfluxDB 1.x workloads
  • +Operations and infrastructure metrics
  • +IoT telemetry with high cardinality

best at · Time-series, Observability, IoT

CnosDBRust cloud-native time-series database with SQL on DataFusion and InfluxDB-style ingestion.
openGeminiCNCF sandbox distributed time-series database from Huawei Cloud, compatible with InfluxQL.
overview
Primary model
Time-Series
Time-Series
Also supports
Columnar / OLAP
Columnar / OLAP
Type
Database engine
Database engine
Status
Active
Active
Developer
CnosDB
openGemini community (Huawei Cloud)
First release
2022
2022
Latest version
2.5.0 (Oct 23, 2026)
1.5.2 (Jan 12, 2026)
License
Open source (copyleft)GNU AGPL v3.0
Open source (permissive)Apache License 2.0
Free tier
✓
✓
popularity
WhichDB Score
6.7
6.5
Rank
#354
#360
GitHub stars
1.8K
1.2K
Stack Overflow questions
–
–
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
None
None
ACID
None
None
Consistency
Eventual
Eventual
Schema
Flexible
Schemaless
Architecture
Single node, Distributed, Client server
Distributed, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
–
–
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
InfluxQL, PromQL
Client languages
Go, Java, Python, Rust
Go, Java, Python
Best for
Time-series, IoT, Observability
Time-series, Observability, IoT
Add more to this comparisonNot sure either fits? Try smart match

CnosDB vs openGemini: FAQ

What is the difference between CnosDB and openGemini?

CnosDB: Rust cloud-native time-series database with SQL on DataFusion and InfluxDB-style ingestion. openGemini: CNCF sandbox distributed time-series database from Huawei Cloud, compatible with InfluxQL. Licensing: CnosDB is open source (copyleft) (GNU AGPL v3.0); openGemini is open source (permissive) (Apache License 2.0). Only CnosDB has joins.

When should I choose CnosDB over openGemini?

Choose CnosDB for energy and utility telemetry; IoT platforms needing multi-tenancy; and replacing InfluxDB 1.x with a SQL-capable engine. Choose openGemini for scaling out InfluxDB 1.x workloads; operations and infrastructure metrics; and IoT telemetry with high cardinality.

Is CnosDB or openGemini more popular?

CnosDB ranks #354 on the WhichDB Score (6.7/100) and openGemini ranks #360 (6.5/100). Popularity is not fit: check the requirements that matter for your project.

Are CnosDB and openGemini open source?

Yes. CnosDB is open source. License: GNU AGPL v3.0. Yes. openGemini is open source. License: Apache License 2.0.