# Page Not Found

The URL `ref/mdb/status-variables/Subquery_cache_hit` does not exist.

You might be looking for one of these pages:
- [Subquery Cache](https://mariadb.com/docs/server/ha-and-performance/optimization-and-tuning/query-optimizations/subquery-optimizations/subquery-cache.md)
- [Query Cache](https://mariadb.com/docs/server/ha-and-performance/optimization-and-tuning/buffers-caches-and-threads/query-cache.md)
- [Segmented Key Cache](https://mariadb.com/docs/server/ha-and-performance/optimization-and-tuning/system-variables/segmented-key-cache.md)
- [Big Query Settings](https://mariadb.com/docs/server/ha-and-performance/optimization-and-tuning/system-variables/big-query-settings.md)
- [Subqueries With EXISTS](https://mariadb.com/docs/server/reference/sql-statements/data-manipulation/selecting-data/subqueries/subqueries-and-exists.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/docs/server/ha-and-performance/optimization-and-tuning/query-optimizations/subquery-optimizations/subquery-cache.md`)
- Use `Accept: text/markdown` header for content negotiation