Atlassian lists 20 messaging patterns

- Atlassian principal @system_monarch published 20 message‑queue and event‑driven patterns covering delivery semantics, retries, dead‑letters and failure isolation. - The patterns include guidance on at‑least‑once vs exactly‑once delivery, dead‑letter queues, idempotency and backpressure strategies for distributed systems. - The thread is aimed at senior/principal interview prep and platform design work and circulated on May 3. (x.com)