vs

Apache IoTDB vs TimescaleDB

Apache IoTDB: Apache time-series database for industrial IoT with tree and table models and edge-to-cloud sync. TimescaleDB: PostgreSQL extension adding hypertables, columnar compression and continuous aggregates for time series.

key differences

  • Licensing: Apache IoTDB is open source (permissive) (Apache License 2.0); TimescaleDB is source-available (Apache-2.0 core + Timescale License (TSL) for advanced features).
  • Apache IoTDB is built for larger datasets (≤ 1 PB) than TimescaleDB (≤ 10 TB).
  • Horizontal scaling is native in Apache IoTDB and none in TimescaleDB.
  • Transactions: Apache IoTDB offers none ACID; TimescaleDB offers full.
  • Only Apache IoTDB has streaming ingest.
  • Only TimescaleDB has transactions, secondary indexes, full-text search, vector search, json.

choose apache-iotdb for

  • +Industrial equipment and PLC data
  • +Power plant and wind turbine monitoring
  • +Edge gateways syncing to a central cluster
  • +Rail and vehicle telemetry

best at · IoT, Time-series, Edge

choose timescaledb for

  • +IoT and sensor data joined with relational metadata
  • +Financial tick and market data analytics in SQL
  • +Product and application metrics dashboards
  • +Energy and utility metering

best at · Time-series, Real-time analytics, IoT

overview
Primary model
Time-Series
Time-Series
Also supports
Relational, Hierarchical
Relational, Columnar / OLAP
Type
Database engine
Extension
Status
Active
Active
Developer
Apache Software Foundation
TigerData (formerly Timescale)
First release
2019
2017
Latest version
2.0.11 (Sep 11, 2026)
2.31.0 (Oct 20, 2026)
License
Open source (permissive)Apache License 2.0
Source-availableApache-2.0 core + Timescale License (TSL) for advanced features
Free tier
✓
✓
popularity
WhichDB Score
22.8
47.1
Rank
#133
#34
GitHub stars
6.4K
23.8K
Stack Overflow questions
514
775
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
None
Multi-region
None
Read replicas
ACID
None
Full
Consistency
Tunable
Strong
Schema
Flexible
Strict
Architecture
Single node, Distributed, Client server
Single node, Primary replica, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
✓
Serverless
—
—
Embedded
—
—
Edge
✓
—
Clouds
–
AWS, Azure
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
SQL, PL/pgSQL
Client languages
Java, Python, C++, Go, C#
C, Java, Python, JavaScript, Go, Rust, C#, Ruby
Best for
IoT, Time-series, Edge, Real-time analytics
Time-series, Real-time analytics, IoT, Observability

Apache IoTDB vs TimescaleDB: FAQ

What is the difference between Apache IoTDB and TimescaleDB?

Apache IoTDB: Apache time-series database for industrial IoT with tree and table models and edge-to-cloud sync. TimescaleDB: PostgreSQL extension adding hypertables, columnar compression and continuous aggregates for time series. Licensing: Apache IoTDB is open source (permissive) (Apache License 2.0); TimescaleDB is source-available (Apache-2.0 core + Timescale License (TSL) for advanced features). Apache IoTDB is built for larger datasets (≤ 1 PB) than TimescaleDB (≤ 10 TB). Horizontal scaling is native in Apache IoTDB and none in TimescaleDB.

When should I choose Apache IoTDB over TimescaleDB?

Choose Apache IoTDB for industrial equipment and PLC data; power plant and wind turbine monitoring; and edge gateways syncing to a central cluster. Choose TimescaleDB for IoT and sensor data joined with relational metadata; financial tick and market data analytics in SQL; and product and application metrics dashboards.

Is Apache IoTDB or TimescaleDB more popular?

TimescaleDB ranks #34 on the WhichDB Score (47.1/100) and Apache IoTDB ranks #133 (22.8/100). Popularity is not fit: check the requirements that matter for your project.

Are Apache IoTDB and TimescaleDB open source?

Yes. Apache IoTDB is open source. License: Apache License 2.0. Not in the OSI sense. TimescaleDB is source-available: you can read the code, but the license restricts some uses, typically offering it as a competing managed service. License: Apache-2.0 core + Timescale License (TSL) for advanced features.