Time Series Databases, or TSDBs, are specialized database systems designed to handle time-stamped data efficiently. Unlike traditional databases, they're optimized for high-volume, time-ordered measurements coming from sources like IoT sensors, application metrics, financial markets, and monitoring systems. These databases excel at ingesting thousands or millions of data points per second while providing fast queries over time ranges. Their architecture is specifically built for handling the unique challenges of time-series data, making them ideal for applications that track measurements over time.