Databases

Last updated 05 November 2026

dudbox runs Postgres, MySQL and Redis for your apps. A database has no web address: only your apps can reach it.

Add one

1. In the dashboard, click New, then Database.
2. Pick Postgres, MySQL or Redis, then click Deploy. It is ready in about a minute.
3. On the database's page, the Connect card has the URL your apps connect with.

Database	Version	Env var	URL
Postgres	18	DATABASE_URL	postgres://postgres:PASSWORD@postgres:5432/app
MySQL	8.4	DATABASE_URL	mysql://root:PASSWORD@mysql:3306/app
Redis	8.4	REDIS_URL	redis://:PASSWORD@redis:6379

The host in the URL is the database's name. A second Postgres is postgres-2, and so on.

Connect an app

The Connect card shows the env var and its URL, with the password hidden. Show shows it, and the copy button copies the full URL.

To give the URL to an app, pick the app next to Add and click it. dudbox sets the env var on that app as a secret. Then click Redeploy so the app starts with it. You can also paste the URL on the app's Env tab yourself. See Env vars.

The password is the database's env var POSTGRES_PASSWORD, MYSQL_ROOT_PASSWORD or REDIS_PASSWORD. Do not change it on the Env tab: Postgres and MySQL keep the password they started with, so your apps could not log in.

Backups

Postgres and MySQL: every change goes to an encrypted backup within 5 minutes. On the Backups tab, pick a moment of the last 7 days and click Restore to put the database back to it. Changes after that moment are gone.

• Postgres stays up while it restores, then stops for a few seconds to switch to the restored data. Changes made while it restores are gone too. Apps that use it may need a redeploy to reconnect.
• MySQL stays up while it restores, but apps may see errors until it is done.
• If backups stop working, the app's card and its Backups tab get a red dot, and we get an alert. The tab says what still works.
• dudbox also saves a dump of each Postgres and MySQL database every night.
• Redis: Redis writes every change to disk, and dudbox backs up its folder every night, encrypted. It has no Backups tab.

Slow queries

Every database has a Metrics tab: its CPU, memory, disk and network over time. See Metrics.

A Postgres database has an Insights tab: the slowest query over time, the errors in its log, and the queries that take 100 ms or more, with an index to add when one would help.

API

Agents and scripts add a database like a one-click app: POST /api/v1/services with "template": "postgres", "mysql" or "redis". GET /api/v1/templates lists them with "kind": "database". Read the password with GET /api/v1/services/{project}/{service}/env/{key}. See Services and Env vars.