Redis and Valkey, connected to your app
Install Valkey or Redis from the catalog, then bind your app to it. The address, password and a ready-made redis:// URL arrive as environment variables.
Valkey or Redis?
We recommend Valkey. It is Redis-compatible and BSD licensed. Redis 8 is there too, under Redis's own licenses (RSALv2, SSPL or AGPL). Your app code does not change.
How does my app get the address?
You map environment variable names to what the install provides: host, port, password, and url in the form redis://:password@host:port. For example, REDIS_URL → url.
Is data kept on restart?
Yes. A password is always set, append-only persistence (AOF) is on, and the volume is included in scheduled backups.
What should I know?
Apps bound to the same install share its password. If each app needs its own credentials, install one per app.
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