I think that’s right re. idempotency. However, I think if each webhook is a statement of the state of an object at time t (using some monotonic definition of ti

I think that’s right re. idempotency. However, I think if each webhook is a statement of the state of an object at time t (using some monotonic definition of time, like a Lamport clock), commutativity is trivial: compare the time in the webhook event to the time in your local database, and only update your database if the webhook event is newer.