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Azure notification quota limits

Notification Hub The REST API documentation mentions a quota for notification hubs in a given namespace. I couldn't find in the documentation or the pricing page what the quota limits are for each plan.

Empirically, I now know that at the free / base level the limit is 100 notification nodes per namespace.

The maximum number of resources of type NotificationHub has been reached or exceeded. Actual: 100, Max. Allowed: 100.

Can quotas be increased? What are the costs?

My current system uses hubs for multi-row, and before proceeding to refactor the architecture, are there any limitations not mentioned on the pricing page?

  • Does Service Bus have quotas on the number of namespaces?
  • Do registrations (devices) have quotas / rate limits for each notification center?
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Send operations:

  • To increase quotas and start using some additional features, you could go to https://manage.windowsazure.com , then select any of your Hub notification and set the base or standard score bus in the Scale tab. Basic USD 10 per month, Standard USD 200. Note that the bus price is actually changed at the namespace level, and all quotas are applied against the namespace.
  • Also, if you try to invoke send operations in parallel from multiple senders, then you will see that the throughput is wider because requests are likely to be routed to different nodes.
  • Also, if you are going to send a really large volume of notifications and each notification is targeting 1 or very few devices, then write to support to enable Inbox for your namespace.

Other quotas:



  • No more than 100 (my best knowledge) namespaces per recurring subscription, you can upgrade to premium without limitation by writing for support.
  • No more than 100 hubs per namespace, you can increase it by writing to maintain.
  • The number of devices is actually unlimited, even if the "500 active devices" limit on the free bus does not apply ... yet :)
  • The registration rate is capped, with quotas starting at 2000 per namespace per minute and depending on the price bus.

And Some official pricing data: http://azure.microsoft.com/en-us/pricing/details/notification-hubs/

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