Messages

Build messaging systems that are robust under latency, failure, and concurrency conditions.

When to Use

• You are implementing chat, notifications, or message queues.
• You need clear semantics for delivery, retries, and ordering.

Workflow

1. Define message lifecycle and delivery expectations.
2. Choose storage/transport strategy based on reliability needs.
3. Implement idempotency, retries, and dead-letter handling.
4. Address ordering and concurrency edge cases.
5. Add observability and failure recovery playbooks.

Output

• Messaging architecture plan
• Reliability and ordering rules
• Monitoring and test checklist