Phone.recording_completed sometimes did not send events for certain periods of time

On June 21st, between 22:18 and 23:10 (Japan time), we conducted a call and recording using ZoomPhone. We had set up a webhook to trigger the “recording completed” event, but we encountered an issue where approximately half of the recording events were not triggered.

I have the following questions:

  • Was there any issue with the webhook during the specified time?
  • Is it correct to assume that event notifications through the webhook have a 100% success rate in triggering the events?
  • Does the success rate of event notifications differ between a webhook-only app and a server-to-server app when configuring webhooks?

Has anyone else had an event not fire in the same way?