Cloud Architect
mediumcloud-architect-messaging

When should cloud architectures use queues, pub/sub, or event streams?

Answer

Use messaging to decouple services and handle spikes. - Queues: work distribution - Pub/Sub: fan-out notifications - Streams: immutable event logs Key concerns: delivery semantics, ordering, retries, DLQs, and observability. Design consumers to be idempotent.

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