Time-series data

Measurements indexed by time, written in huge volumes and read as aggregates over ranges. Specialised engines compress them heavily and expire old data automatically.

Where it shows up in real systems

  • Time-series database

    Writes are append-only and compressed by time, and queries aggregate ranges such as an average per minute. Downsampling and retention policies keep storage under control.

    In production: InfluxDB, TimescaleDB, Amazon Timestream, Prometheus TSDB, QuestDB

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