async-messaging-patterns

What problem does it solve?

This skill helps you avoid reliability and correctness issues in asynchronous messaging by providing production-grade event design and consumer/producer patterns for SQS, SNS+SQS, Kafka, and EventBridge.

Core Features & Use Cases

• Event structure and naming rules: Standardizes eventId, eventType, versioning, correlationId, and immutable fact payloads to support consistent downstream processing.
• Idempotent consumer logic (mandatory): Implements the “at-least-once delivery” reality by preventing duplicate side effects using durable event tracking.
• Delivery reliability strategies: Guides partial batch failure handling, retry with exponential backoff + jitter, DLQ/poison message workflows, and ordering considerations.
• Schema evolution and observability: Defines backward-compatible schema evolution, plus key metrics and trace propagation requirements.

Quick Start

Use the async-messaging-patterns skill to design an event-driven flow for an order system with idempotent consumers, DLQ-backed retries, and versioned event payloads.