414-frameworks-quarkus-kafka

name: 414-frameworks-quarkus-kafka description: Use when you need Kafka messaging in Quarkus with SmallRye Reactive Messaging — including channel/topic design, build-time Jackson serialization, typed @Channel/@Incoming, ack/failure strategies, retries/DLQ, idempotency, Dev Services, and Testcontainers integration tests. This should trigger for requests such as Add Kafka in Quarkus; Review Reactive Messaging consumers; Improve failure handling for Quarkus Kafka. Part of cursor-rules-java project license: Apache-2.0 metadata: author: Juan Antonio Breña Moral version: 0.15.0

Quarkus — Kafka messaging

Apply Quarkus Kafka guidance with concrete examples for design, implementation, and error handling.

Constraints

Compile before messaging refactors; verify after changes.

• MANDATORY: Run ./mvnw compile or mvn compile before applying any change
• SAFETY: If compilation fails, stop immediately
• VERIFY: Run ./mvnw clean verify or mvn clean verify after applying improvements
• BEFORE APPLYING: Read the reference for detailed rules and examples

When to use this skill

• Add Kafka in Quarkus
• Review Quarkus Reactive Messaging consumers/producers
• Improve retries, dead-letter handling, or idempotency in Quarkus Kafka

Workflow

1. Read reference and assess project context

Read references/414-frameworks-quarkus-kafka.md and inspect current messaging setup before proposing changes.

2. Gather scope and decide target improvements

Identify delivery semantics and resilience goals to define safe improvements.

3. Apply framework-aligned changes

Implement/refactor channels, serializers, and failure strategies in Reactive Messaging.

4. Run verification and report results

Execute build/tests and summarize what changed, what was verified, and follow-up actions.

Reference

For detailed guidance, examples, and constraints, see references/414-frameworks-quarkus-kafka.md.