Event-Driven Architecture Interactive Guide

Master async messaging from event contracts to sagas, outbox, idempotency, and observability with hands-on examples, MCQs, and coding challenges.

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Core Patterns

Messaging Foundations

Events vs commands, broker topologies, schema evolution, transactional outbox, change data capture, and sagas.

Reliability & Operations

Exactly-Once, Testing & Observability

Idempotency keys, deduplication, exactly-once semantics, contract testing, Testcontainers, and distributed tracing.