# Page Not Found

The URL `bull-3.x-migration/compatibility-class` does not exist.

You might be looking for one of these pages:
- [Redis™ Compatibility](https://docs.bullmq.io/guide/redis-tm-compatibility.md)
- [Observables](https://docs.bullmq.io/bullmq-pro/observables.md)
- [Batches](https://docs.bullmq.io/bullmq-pro/batches.md)
- [Important Notes](https://docs.bullmq.io/bull/important-notes.md)
- [Patterns](https://docs.bullmq.io/bull/patterns.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.bullmq.io/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.bullmq.io/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/guide/redis-tm-compatibility.md`)
- Use `Accept: text/markdown` header for content negotiation