How to: Time series
A time-series database is a database optimized for time-stamped, or time series, data.

**Advantages**

- Fast insertion and retrieval
- Efficient data storage

**Use cases**

- IoT data
- Metrics analysis
- Application monitoring
- Understand financial trends

**Examples**

- [InfluxDB](https://www.influxdata.com)
- [Apache Druid](https://druid.apache.org)