Just to clear up what might be a little confusion... The limit is 2,500 per "Developer", "Key", or "Website", not for "All Apps for anyone". ... I don't know how they figure it out either....but I can tell you that when I have used more than that limit for more than a couple of days in a row, I was cut off for 24 hours :).

They also state that it is meant to be used to make a query one time, and that you should cache the results (and follow the TOS) instead of calling it again, and if you do that, you will find you don't use it to the limit very often :).


On 24/08/2010 12:31 AM, Filip Havlicek wrote:
And you are sure based on what? Your assumption? I'm just telling you what is written.

"Use of the Google Directions API is subject to a query limit of 2,500 directions requests per day."

Nothing else is written there about the public limitations. I'm pretty sure the limitations is for all the applications because 1) for public usage, you don't need any key 2) from user point of view, who would request 2500 directions per day? I'm sure practical user maximum would be around 100-200 request. And this limitation is there IMHO for rendering usage of this API in a core of commercial navigation softwares (ie TomTom) impossible, because they would make a lot of money on this basic API (I don't own any of this software, but from what I know, that's just what they do - directions+maps+reading, that could be done with Google APIs in a few days).

Although I'm sure I can be ultimately wrong (although in that case, I would be curious why noone would be exploiting these APIs to make profit).

Best regards,
Filip Havlicek

2010/8/24 davemac <[email protected] <mailto:[email protected]>>

    That doesn't sound quite right. I'm sure that the limit is either
    based on the signature of the app (questionable) or based somehow on
    the user who's using it. Either way I'm not sure how Google could
    possibly figure either one out. If it's the latter as I suspect, then
    I should be fine using the Directions API in my app, with some sort of
    notice to the user that only 2500 requests per day are allowed. If
    it's the former, then I'm most likely out of luck.

    Anyone else know?

    - dave

    On Aug 22, 11:31 am, Filip Havlicek <[email protected]
    <mailto:[email protected]>> wrote:
    > As far as I know, the 2500 requests per day is for all
    applications out
    > there (be it desktop, mobile or whatever), so your application
    really can't
    > rely on this directions API since it can be brought offline in
    less then an
    > hour by all the applications using it. (And in my opinion that's
    why noone
    > is using it for anything but debugging.)
    >
    > 2010/8/22 davemac <[email protected]
    <mailto:[email protected]>>
    >
    > > I would love to be able to use the Directions API in my
    Android app,
    > > but I'm confused by the information in the Directions API
    > >
    documentation:http://code.google.com/apis/maps/documentation/directions/
    > > so the short form of my question is: can Android apps use the
    Google
    > > Directions API?
    >
    > > It clearly states the intended audience includes mobile
    developers.
    > > But it also states that you're limited to 2500 requests per
    day. Does
    > > this mean my app, if deployed to thousands of devices, is in total
    > > restricted to 2500 requests per day? How could the Google
    server tell
    > > anyway? Based on IP address? In which case I may be okay. The docs
    > > also say no API key is required so again it would seem the Google
    > > servers have nothing to use to accumulate a counter of
    requests per
    > > day. Still, I don't want to be in violation of any Google Terms of
    > > Service.
    >
    > > So is it okay or not? Thanks in advance.
    >
    > > - dave
    >
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