Glossary
NATS JetStream
Persistent, replayable streaming on top of NATS Core. RateStack's event backbone — every domain event flows through JetStream with idempotent replay.
Streams have configurable retention windows (7-180 days in RateStack depending on stream type). Consumers ack messages at-least-once; dedup is enforced via Redis-backed idempotency keyed on eventId.