I'm planning to update my app with push support. I connect to the Apple server with a php script and send all the pushs at once, the close the connection.
How many can I send in a minute? Do you guys have any experience with that?
All the best, John
PS: Can you recommend pushwoosh.com or urbanairship.com ? How fast do they deliver Pushs?
Here's what Apple say regarding push speed in their Technical Note :
Push Notification Throughput and Error Checking
There are no caps or batch size limits for using APNs. The iOS 6.1 press release stated that APNs has sent over 4 trillion push notifications since it was established. It was announced at WWDC 2012 that APNs is sending 7 billion notifications daily.
If you're seeing throughput lower than 9,000 notifications per second, your server might benefit from improved error handling logic.
We can assume from this quote that you should be able to send at least 9000 notifications per second.
I suggest you to try using one of the many push notifications services urban, parse, push.io and many more. I'm using www.pushapps.mobi and the rate is 2000-3000 push per second.
来源：https://stackoverflow.com/questions/13933836/ios-push-notification-how-many-can-i-send-from-my-server-in-a-minute