# TSDB [![Build Status](https://travis-ci.org/prometheus/tsdb.svg?branch=master)](https://travis-ci.org/prometheus/tsdb)

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This repository contains the Prometheus storage layer that is used in its 2.x releases.

A writeup of its design can be found [here](https://fabxc.org/blog/2017-04-10-writing-a-tsdb/).

See also the [format documentation](docs/format/README.md).