> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fly.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Advanced guides

<Warning>
  Important: We are not able to provide support or guidance for unmanaged Postgres. We now offer [Fly.io Managed Postgres](/mpg) , our fully-managed database service that handles all aspects of running production PostgreSQL databases.
</Warning>

Fly.io makes it possible to build out high performance Postgres clusters that are accessible globally, but it does require some consideration and architecture thanks to latency imposed by the speed of light, which is approximately 204,190,477 m/s in a fiber optic cable.