we release a fix for the webhook retries tonight, so that each event is retried up to 5 times with delays between the retries of 5sec, 1min, 5min, 30min, 1h. On top of that we add a jitter of 1-30sec so that on retry not all events are retried at the same time. Only after failing for 5 times, we increase the FailureCount of the webhook.
A webhook is deactivated after 10 consecutive failures. A successful API request resets the FailureCount.
Regarding our API performance: We are aware of the problem and have made mayor improvements in the area in the last 2 weeks. There were several issues with the way our database handled queries that were really hard to spot but we finally found the underlying issues. Together with a bunch of other improvements, this week was way more stable than the previous ones. We will heavily invest in performance improvements in the future as well.
I hope this answers your questions.
Best regards
Ian