InfluxDB
In plain terms
A database purpose-built for time-series data.
Going deeper
InfluxDB efficiently stores and queries timestamped metrics and events, ideal for monitoring and IoT. It's optimized for time-ordered writes and queries.
Under the hood
High write throughput, retention policies, and downsampling suit metrics; specialized over general-purpose DBs.
Examples
Metrics, monitoring, IoT sensor data, DevOps dashboards, Grafana.
Think of it like...
Like a logbook optimized for entries that always carry a timestamp.