Retention

Lumin keeps your data for the retention window of your plan, then removes it automatically. There is nothing to configure.

The retention horizon

The horizon is the retention window of your plan: 7 days on Hobby and 30 days on every paid plan. See Plans. The create flow does not ask you for a value.

A plan change moves the horizon in both directions. An upgrade extends it. A downgrade shortens it, and Lumin then removes the data that falls outside the new window.

The horizon applies to every signal the same way: logs, metrics, browser events, and uptime check results.

When data goes away

Lumin sweeps for old data every six hours. When a row ages past the horizon, the next sweep deletes it. So a project on 30-day retention stops returning 31-day-old rows.

There is no soft delete and no grace period. Once a sweep deletes a row, the row is gone from query results, and Lumin cannot restore it. Keep this in mind before you move to a smaller plan.

Live tail is not affected

Live tail shows a row at the moment Lumin writes it. It does not read stored history, so the horizon does not apply to it.

Historical queries are bounded by the horizon. A time range that reaches past it returns the rows that survive, not an error. A long window thins out at its far end.