Is the maintenance window burning error budget?
Example: Let's say I have a 1h error budget left. I stop the service for planned maintenance for 30 minutes. Is the error budget still 1h or is it 30 minutes?
The maintenance window is happening when there is no traffic to the application, for example, 3-5 am for online retailer that is available in one country.
it is 30 minutes
“The development team can ‘spend’ this error budget in any way they like. If the product is currently running flawlessly, with few or no errors, they can launch whatever they want, whenever they want. Conversely, if they have met or exceeded the error budget and are operating at or below the defined SLA, all launches are frozen until they reduce the number of errors to a level that allows the launch to proceed.”
from https://www.atlassian.com/br/incident-management/devops/sre