Retention policies
Retention policies delete aged data automatically, so storage doesn't grow without bound. Launchpad drives Arc's admin API to create and run them from the Retention tab, with no config files and no curl.
Create a policy
Click Create Policy and configure:
| Field | Description |
|---|---|
| Database | Which database the policy applies to. |
| Measurement | A specific measurement (table), or All tables in the database. |
| Retention Period (days) | How long to keep data. Anything older than the cutoff becomes eligible for deletion. |
| Buffer Period (days) | An optional grace window beyond the retention period before data is actually removed. |
| Enabled | Whether the policy runs on its own, or is created paused. |
Dry-run before you delete
Before anything is removed, run a dry-run. It reports exactly which files and how many records the policy would delete, so you're never guessing about the blast radius. Review the results, then execute for real when you're confident.
Run and manage
Each policy card shows its target (database + measurement), retention period, buffer period, last execution time, and last-deleted count. From the card you can:
- Edit: change the periods or scope
- Pause / resume: toggle whether it runs automatically
- Execute Now: run it on demand
- Delete: remove the policy
Expand Execution History to see past runs.
Retention management drives Arc's admin API, so the connection must use an admin-scoped token. See Connecting to Arc.