Related to "Internals"
Data retention in InfluxDB Clustered
InfluxDB Clustered enforces database retention periods at query time and, to optimize storage, routinely deletes Parquet files containing only expired data.
InfluxDB 3 storage engine architecture
The InfluxDB 3 storage engine is a real-time, columnar database optimized for time series data that supports infinite tag cardinality, real-time queries, and is optimized to reduce storage cost.