# Page Not Found

The URL `manual-zh/reference/program/mongos.html` does not exist.

You might be looking for one of these pages:
- [聚合命令](https://docs.mongoing.com/aggregation/aggregation-reference/aggregation-commands.md)
- [system.roles集合](https://docs.mongoing.com/security/security-reference/system.rolescollection.md)
- [$cond (aggregation)](https://docs.mongoing.com/can-kao/yun-suan-fu/aggregation-pipeline-operators/cond-aggregation.md)
- [聚合命令对比](https://docs.mongoing.com/aggregation/aggregation-reference/aggregation-commands-commparison.md)
- [SQL 到聚合映射图表](https://docs.mongoing.com/aggregation/aggregation-reference/sql-to-aggregation-mapping-chart.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.mongoing.com/sitemap.md) - Complete documentation index
2. **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., `/aggregation/aggregation-reference/aggregation-commands.md`)
- Use `Accept: text/markdown` header for content negotiation