Tim Moores wrote:I think there's no fundamental limit to how many devices you can send notifications, but you need to send them in batches (of no more than 1000 if memory serves). The GCM example server code shows how to do that.
Make sure you give users a way to opt out of notifications, or at least let them turn off any sound, light and vibrations your app would otherwise use.
Note that you can send messages to the device without the app showing a notification (those are different concepts).
For starters, you should read thoroughly through https://developers.google.com/cloud-messaging/ and its linked pages and example code.
Ok, i got it , i can send a message to maximum 1000 devices per SEND_ID. The question now is, if i want to send a message to a larger number of users (for example 50,000) in real-time.
what is the best thing i can do for the shortest latency ?