Sorry if this is a silly question but... How do you make an asynchronous URLFetch call in Java? Is this a question of making calls to fetch() without calling getContent() on the response?
Jeff >> I see no limit of "simultaneous [urlfetch] API calls" documented on >> the quotas page ( http://code.google.com/appengine/docs/quotas.html ). >> I only see a limit of 32000 calls per minute. There is a "simultaneous >> dynamic requests" of 30 mentioned on the java runtime page ( >> http://code.google.com/appengine/docs/java/taskqueue/overview.html ), >> but I assume that would not apply to asynchronous URLFetch calls. >> Which limit are you referring to, and where is it documented? >> > > Each request can have 10 outstanding asynchronous API calls. That is, if > you begin a request and begin 10 asynchronous URLFetch API calls, when you > attempt to begin the 11th call it will block until one of the existing 10 > calls completes. > This is separate from both the URLFetch-related quotas and then simultaneous > request limit. This limit pertains to each request individually. > This doesn't appear to be documented very well. I'll make sure this is > mentioned for both Python and Java. > >> >> On Jan 19, 2:13 pm, Don Schwarz <schwa...@google.com> wrote: >> > I just responded to the other thread you pinged, but I'll respond here >> > too >> > for completeness. >> > >> > I've now >> > markedhttp://code.google.com/p/googleappengine/issues/detail?id=1899as >> > Acknowledged. It is currently on schedule to be included in the next >> > release. If you want to help us test it out before that time, please >> > contact me privately and I may be able to facilitate that. >> > >> > However, please note that in Java, as in the current Python API, each >> > request is limited to 10 simultaneous API calls. You cannot "fire off >> > several hundred URLFetch calls at a time." The URLFetch call quota, as >> > with >> > all of the non-billable quotas, is designed to protect us from >> > applications >> > that are abusing a particular resource. You shouldn't view them as a >> > "right", but more of an additional constraint. >> > >> > On Mon, Jan 18, 2010 at 9:45 AM, Locke <locke2...@gmail.com> wrote: >> > > We are limited to 32,000 URLFetch calls per minute (that's 533 per >> > > second). >> > >> > > In Python, one could use the .create_rpc() method to fire off several >> > > hundred URLFetch calls at a time. >> > >> > > But in Java, it is absolutely impossible, as far as I can tell, to >> > > execute more than a tiny fraction of the allowed amount. To have just >> > > two URLFetch calls going at a time, you need to use the TaskQueue. But >> > > the TaskQueue has severe limitations. It can have a maximum of 20 >> > > simultaneous calls (no matter how many users you have). And each of >> > > those calls eats into your "simultaneous dynamic request limit" of 30/ >> > > second (actually less than that, in my experience). >> > >> > > Has anyone found a way to get Java's URLFetch working at the same >> > > level as Python's URLFetch? Or will Java apps never be able to use >> > > even small percentage of the allotted URLFetch quotas? >> > >> > > -- >> > > You received this message because you are subscribed to the Google >> > > Groups >> > > "Google App Engine for Java" group. >> > > To post to this group, send email to >> > > google-appengine-j...@googlegroups.com. >> > > To unsubscribe from this group, send email to >> > > >> > > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> >> > > . >> > > For more options, visit this group at >> > >http://groups.google.com/group/google-appengine-java?hl=en. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine for Java" group. >> To post to this group, send email to >> google-appengine-j...@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine-java+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> >> >> > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > >
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