Retries tend to amplify it, but a more common cause is scheduled tasks in clients/end user devices. E.g. all clients checking for an update at 10:00 UTC every

Retries tend to amplify it, but a more common cause is scheduled tasks in clients/end user devices. E.g. all clients checking for an update at 10:00 UTC every day, all clients polling for new data at fixed times, etc.