TDengine

Judgement

What it is

Building block

What it does

A time-series database for industrial IoT and connected vehicles that ingests and queries sensor data at high volume with SQL, caching and stream processing built in.

Adopt it when

You collect data from many devices and need efficient storage with a table-per-device model.

Watch out

AGPL-3.0, clustering and some features are in the commercial edition, and its data model differs from general SQL databases.

Ready for

Production-ready

Runs as

Self-hosted server and cloud service

Built with

C, C++ and Go

How established

Established: started 7 years ago, latest release ver-3.4.3.9.

What the license allows

Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: TDengine → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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