What is the limit on registrations to cause a 403 for register create/update?
According to the documentation, registration create/update (http://msdn.microsoft.com/en-us/library/azure/dn223265.aspx) may return a 403.
So there must be some kind of limit, though I'm not sure what the limit is. The pricing page does not say anything about a registration limit.
the error per the api spec is below
403 Quota exceeded; too many registrations in this namespace. Registration not created
what causes the 403?
Any help appreciated.
Number of registrations is not limited. There is a throttling for CRUD operation's rate. Quotas depend on tire your are but it is not going to be less then 2000 operations per minute per namespace any way. If quota is exceed then service returns 403.
来源：https://stackoverflow.com/questions/27474902/azure-notification-hub-limit-on-registrations