GCM send replicate topic message at short time, and gcm would delay to send?

Question

When I send replicate topic message(10 times per 2 second) at short time, after that it seem gcm would delay to send message no matter what I send.

The gcm format collapse_key:"..." data:{...}, dry_run:false,

Answer 1

http://www.androiddocs.com/google/gcm/adv.html#throttling

Throttling topic

and the answer could found at GCM: how to avoid throttling