TDengine

TDengine is an open source, high-performance, scalable time-series database with SQL support. Besides a TSDB as its core, it has built-in caching, stream computing and data subscription functionalities to reduce the complexity and operation cost for the system. It can be widely used in IoT, connected vehicles, Industry Internet, IT infrastructure monitoring and others.

Check TDengine source code at https://github.com/taosdata/TDengine