ATOMIC BATCH PUBLISHING IN NATS 2.12: ALL-OR-NOTHING MESSAGE GUARANTEES

Summary from the TLDR Data newsletter

NATS 2.12 adds atomic batch publishing for JetStream streams, letting producers commit related messages as an all-or-nothing unit. Event-sourced systems, multi-subject fan-out, and state replacement workflows can avoid partial writes without building custom recovery logic, while consistency checks such as expected sequence headers preserve concurrency safety.