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create-dead-letter-queue

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Generates Dead Letter Queue components for PHP 8.4. Creates failed message capture, retry strategy with exponential backoff, failure classification, and unit tests.

skills/create-dead-letter-queue/SKILL.md

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# Dead Letter Queue Generator

Creates Dead Letter Queue pattern infrastructure for capturing and retrying failed messages.

## When to Use

| Scenario | Example |
|----------|---------|
| Poison messages | Messages that always cause handler failures |
| Processing failures | Temporary infrastructure issues (DB down, timeout) |
| Audit trail | Track all failed message processing attempts |
| Retry mechanism | Automatic retry with exponential backoff |
| Monitoring | Alert on DLQ threshold exceeded |