title: What is the registrations per second throughput for Azure Notification Hub
body: <p>Does anyone know what is the registrations per second throughput for Azure Notification Hub?</p>
  
  <p>I ran a background task to sync NH with our user database however it started to recieve timeouts from notifcation hub - presumably some throttling. </p>
  
  <p>We found that we could process around 18,000 registrations per hour (300/second) without any issue. The peak hour in the graph when it failed shows 44,000 registrations in that hour.</p>