libconfluo is Confluo’s data structure library, that supports high throughput ingestion of logs, along with a wide range of online (live aggregates, conditional trigger executions, etc.) and offline (ad-hoc filters, aggregates, etc.) queries.

The main data structure in this library is the atomic_multilog, a collection of lock-free concurrent logs that stores raw data, aggregate statistics, and materialized views and uses new techniques to efficiently update the entire collection as a single atomic operation.