[axiosgunnar]

I'm curious, what systems were those that generate >10e9 UUIDs/s?

[jandrewrogers]

Many types of telemetry and sensor data models; vast networks of machines can generate a stupendous quantity of events. UUIDs are not good design choice in these cases but it is a hard requirement for some users for compatibility with legacy systems which require a 128-bit unique identifier for everything.

Another issue with probabilistic UUIDs, possibly more important than collisions, is that they don’t compress very well when stored.

[chmod775]

POV: You're AWS and logging every API call.

Just as an example where you could easily reach high ballparks, though I doubt it's that many.

Maybe some some distributed computing applications on server farms otherwise? Certainly not anything that you'd store in a regular database.