> ## 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. # Databases and storage Illustration by Annie Ruygt of a tiger sleeping next to a storage device ## Managed database service [Fly.io Managed Postgres](/mpg) is a production-ready Postgres service that handles the hard parts for you: high availability, automatic failover, encrypted backups, monitoring and metrics, seamless scaling, and 24/7 support to keep your data fast, safe, and always online. ## Key-value stores **[Upstash for Redis](/upstash/redis)** - [Redis](https://redis.io/) is an in-memory database commonly used for caching. A managed service by [Upstash](https://upstash.com/). *** ## Fly Volumes - Disk storage The Fly Machines in your app provide ephemeral storage, so you get a blank slate on every startup. For hardware-local, persistent storage on Fly.io, use Fly Volumes. You can attach volumes on an app directly, or run a separate database app with volume storage and connect an app to that. **[Fly Volumes](/volumes/overview):** A Fly Volume is a slice of NVMe disk storage attached to the server that hosts your Machine. Read the [Fly Volumes overview](/volumes/overview) to find out if volumes are the best solution for your use case. ## Object storage service **[Tigris Global Object Storage](/tigris)** - [Tigris](https://www.tigrisdata.com/) is a globally distributed S3-compatible object storage service hosted on Fly.io infrastructure. *** ## Have a project with special database or storage requirements? If your project calls for something else, most external databases and storage providers work well with Fly.io. You might just need to spend a bit more time wiring up the networking.