---
title: "Time Series DB (TSDB) in 20 Lines"
description: "Learn about Time Series Databases (TSDB) and their applications."
image: "https://assets.bytebytego.com/diagrams/0364-time-series-db-tsdb-in-20-lines.jpeg"
createdAt: "2024-02-07"
draft: false
categories:
  - database-and-storage
tags:
  - "Database"
  - "TimeSeries"
---

![](https://assets.bytebytego.com/diagrams/0364-time-series-db-tsdb-in-20-lines.jpeg)

What is **Time-Series DB** (TSDB)? How is it different from Relational DB?

The diagram above shows the **internal data model** of a typical Time-Series DB.

A TSDB is a database optimized for time series data.

*   From the users’ perspective, the data looks similar to the relational DB table. But behind the scenes, the weather table is stored in 4 TSMs (Time-Structured Merge Trees) in the format of \[Measurement, Tag, Field Name].

*   In this way, we can quickly aggregate and analyze data based on time and tags.

*   Typical usage:

    *   Trades and market data updates in a market
    *   Server metrics
    *   Application performance monitoring
    *   Network data
    *   Sensor data
    *   Events
    *   Clicks streams