一次将消息发送到所有用户设备的最佳方法是什么？

Question

I have an app in the Android market, and I have over 50 thousands users. I need to send to all my users a message at a certain time. What is the best way to send a message to all my users' devices at once?

I was reading about Android GCM. GCM requires each app to be registered and have a unique id. It also says that I can only send a message to a limited number of device (1000). I couldn't understand if it meant a 1000 device at once or what? And I really don't need the IDs, because I'm sending the same message to all my users.

Any ideas?

Answer 1

The 1000 limit applies when you send the same message to multiple devices - you are allowed to specify up to 1000 Registration IDs in the JSON request.

If you want to send the same message to more than a 1000 users, you'll have to split them into groups of 1000 Registration IDs and send to each group in a separate request to GCM server.

GCM requires that you specify the Registration IDs of all devices that should receive the notification. There is no way to broadcast a message to all users without specifying their Registration IDs.