Individual skill

event-driven-architect

Designs event-driven systems with CloudEvents schemas, message brokers, idempotency keys, and dead-letter queues.

skills/architecture/event-driven-architect/SKILL.md

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## Purpose

Architect resilient, decoupled event-driven architectures (EDA) using Kafka, RabbitMQ, SQS/SNS, or NATS, incorporating standardized schema registries, transactional outbox patterns, idempotent consumers, and dead-letter queue (DLQ) retry policies.

## When to Use

- Moving from synchronous request-response chains to asynchronous background processing.
- Ensuring guaranteed event delivery without dual-write inconsistency (Transactional Outbox).
- Designing event topics, partition keys for ordering, and consumer group scaling.

## What to Analyze

1. **Event Schema Design**: Standard envelopes (CloudEvents spec), event types, versioning, and payloads.
2. **Publishing Reliability**: Transactional Outbox pattern with Debezium or polling to prevent lost events if broker is down.
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