# Page Not Found

The URL `manual-zh/reference/read-preference.html` does not exist.

You might be looking for one of these pages:
- [读关注 "local"](https://docs.mongoing.com/mongodb-crud-operations/read-isolation-read-concern/read-concern-local.md)
- [安全参考](https://docs.mongoing.com/security/security-reference.md)
- [索引参考](https://docs.mongoing.com/indexes/indexing-reference.md)
- [分片参考](https://docs.mongoing.com/fen-pian/sharding-reference.md)
- [读关注 "snapshot"](https://docs.mongoing.com/mongodb-crud-operations/read-isolation-read-concern/read-concern-snapshot.md)

## How to find the correct page

1. **Ask a question**: /sitemap.md?ask=<question> - Complete answer with sources
2. **Browse the full index**: [/sitemap.md](https://docs.mongoing.com/sitemap.md) - Complete documentation index
3. **View the full content**: [/llms-full.txt](https://docs.mongoing.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/mongodb-crud-operations/read-isolation-read-concern/read-concern-local.md`)
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