TimescaleDB is an open source database based on Postgres. For all data that represents a date in any form, TimescaleDB is the ideal basis for developing powerful and data-intensive applications.
Timescale is an extension for PostgresSQL and offers the classic functionalities of a time-series database with SQL support.
Classic use cases of time-series databases are applications where data is created over time. E.g. sensor data, server metrics or stock quotes.