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# PostgreSQL Connectivity

Store allows you to save time series data in PostgreSQL database. It uses a native PostgreSQL driver to interact with the database and provides high reliability and performance.

### Key Features <a href="#h.q6tu5c18i0e8" id="h.q6tu5c18i0e8"></a>

* Flexible tuning of writing performance.
* Verification of SSL server certificate.
* Flexible tuning of time series metadata and database design.
* OPC UA Historical access (raw/aggregated data reading).

We strongly recommend using TimescaleDB extension as it has several advantages over traditional PostgreSQL:

* High performance at INSERTs and SELECTs
* Fast removal of old data
* Automatic data compression