Keynote: The State of NATS as a Reactive Substrate
summary
NATS adds JetStream persistence to a decade‑old stateless broker, giving at‑least‑once delivery plus deduplication via message IDs (default dedup window two minutes) and optimistic concurrency control using sequence IDs. Streams bind subjects, consumers support server‑side filtering and consumer groups, and Raft provides synchronous replication for stream replicas. Edge-friendly features include leaf nodes and Gateways, mirrorable streams/KV/object stores for local processing and later sync, and measured single‑publisher single‑subscriber throughput of ~360 MB/s on a laptop.
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chapters (12)
- 0:00NATS as reactive substrate
- 1:27What is NATS and design
- 3:34Messaging capabilities and guarantees
- 7:52NATS connectivity and cluster
- 10:21Regional cluster gateways
- 12:05Leaf nodes for edge models
- 14:10Persistence and streaming in NATS
- 17:59Consumer patterns and streaming
- 19:43Key-value and object storage
- 22:34Streams, mirrors, and locality
- 24:40Reactive patterns with NATS
- 27:10NATS resources and events
