As best I understand 500 isn't a fixed limit. Thats an estimate on how
many requests an average application would get while keeping withing
all the various quota.
There is 45,200 requests /minute, which equates to 753
requests/second. But can be upped, if you approaching that limit.


... but I would question your architectural decision to just blindly
refresh every 0.5 seconds. In general you may well find that latency
introduced by mobile networks wont sustain that rate (quite aside from
raw 'bandwidth'). HTTP overhead is not insigificant, so the http
headers without content wont be 'free'.

Long Polling or even better the Channel API, would probably offer a
better solution.

If the Channel API doesnt work for you, using XMPP or GTalk more
directly might work. There are also third party 'comet' servers that
offer intergration with AppEngine.




On 3 May 2011 12:29, Rohan Chandiramani <[email protected]> wrote:
>
> Greetings App Engine people,
>
> So i'm creating a multi-player android game and thought it would be a
> interesting idea to have App Engine handle the server work.
> The game consists of 4 players, each phone requests an update every
> 0.5 seconds.
> These requests are very simple and lightweight so i shouldn't be over
> reaching any free quotas.
> The problem i found was that App Engine only handles 500 requests per
> second, i would only be able to
> have around 60 game sessions active before App Engine will start
> ignoring new requests?
>
> "App Engine's quota system allows for efficient applications with
> billing enabled to scale to around 500 queries per second (qps) or
> more than 40 million queries per day."
>
> So how much would it be without billing enabled?
> Also on the same page there is a request form for additional requests,
> would i be eligible for this and what would the consequences be?
> Or should i just not use this platform because it is not made for this
> kind of usage?
>
> Thank you kindly, i'm looking forward to an answer.
> Greetings,
> Rohan Chandiramani
>
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