push notification - Android GCM Rate Limit -


i have seen few posts talking gcm rate limits still not clear me. let me ask question given scenario:

    -----------------------------    |                             |    |          app server         |    |                             |     -----------------------------                  ||                  ||                  ||                  ||     -----------------------------    |                             |    |        gcm connection       |    |            server           |    |                             |     -----------------------------     /       |        \   ....    \    /        |         \           \   /         |          \           \ user #1     user #2     user #2   ... user #100000

given scenario above, have following questions:

  1. for downstream unicast messages, there rate limit/quota limit on how many & @ rate app server can send messages users.
  2. for upstream messages, there limit on how many messages/second gcm can push app server because there single connection app server gcm , incoming (millions) pushed same pipe. repercussion?


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