How are rate limits checked against?

API Spot/Margin API
1

Title.
It is not detailed in the documentation whether:

  • The system use a rolling time window
    Maximum of x requests in the last y time units

  • The system use a static UTC based time window
    Maximum of x requests in the last y UTC time units

2

The system uses a static UTC based time window starting from 00:00 UTC, the beginning of the day.