Message Queue and Event-Driven Messaging Patterns

Overview

Message queues decouple producers from consumers, enabling async processing, horizontal scaling, and fault isolation. Incorrect delivery semantics, dual-write hazards, unordered processing, and unbounded queues are among the most costly bugs in distributed systems.

When to use: Building async workflows, microservice integrations, event streaming pipelines, background job processors, or any system where services communicate without direct RPC calls.

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