> For the complete documentation index, see [llms.txt](https://gotolabs.gitbook.io/lightninguservault/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gotolabs.gitbook.io/lightninguservault/architecture/data-storage/key-value-databases.md).

# Key-Value Databases

Key-Value databases store data as a collection of key-value pairs, where each unique key is associated with a specific value. They're optimized for speed and can retrieve values quickly when given a key. 

These databases are particularly useful for testing, as they don't require any additional services, making setup straightforward and hassle-free. Ideal for scenarios where quick access to data and simplicity are needed.