See discussion on T327946.

The CheckUser API for viewing IP addresses used by a temporary account for editing certain revisions is structured:

/checkuser/v0/temporaryaccount/{name}/revisions/{ids}

...where multiple revision IDs may be passed. The default limit for those with the right apihighlimits is 500, and for those without is 50.

500 revision IDs could lead to a long URL (longer than Edge/IE's c.2000 maximum if revision IDs are longer than a few digits). But for this to happen via the UI, a single temporary user account would need to have 500 revision IDs on a single page.

We'd like to know...

• The rough distribution of the number of revision IDs requested via this API

...so we can decide:

• Should we do anything special to ensure the maximum URL length is never exceeded, or is this likely a very minor edge case?
• Should we do anything to increase the limits, e.g. because they are being hit a lot?