> ## 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.

# Multi-region Deployments

Rails applications that are successful often end up with users from all parts of the world. Learn how to make them fast and responsive for everybody on the planet.

## The `fly-ruby` gem

The [fly-ruby gem](https://github.com/superfly/fly-ruby) provides a basic toolkit for making Rails applications across multiple regions. Read [Run Ordinary Rails Apps Globally](https://fly.io/blog/run-ordinary-rails-apps-globally/) to see how the gem can be used in a Rails application to make it work across multiple regions.

## Redis

Since many Rails applications depend on Redis for caching, background workers, and Action Cable, it's important to think through deploying Redis globally.

* [https://fly.io/blog/last-mile-redis/](https://fly.io/blog/last-mile-redis/)

## Postgres

Postgres also requires consideration for global deployments.

* [https://fly.io/docs/postgres/high-availability-and-global-replication](https://fly.io/docs/postgres/high-availability-and-global-replication)