Thanks Nick, makes complete sense. I'll write it so that for each Interaction, it finds the appropriate entity, increments the counter and stores it; if looking for the entity turns nothing up, i make a new one with a counter set to 1.
right? thanks again for the quick and kind attention. best, Christopher On Aug 7, 6:02 am, "Nick Johnson (Google)" <nick.john...@google.com> wrote: > Hi Markitecht, > > It sounds like your best option is to have a single Interaction entity > for each unique string. You can use the key name to ensure uniqueness. > Then, to record a new interaction, in a transaction fetch the existing > one (if any), increment the count, and store it. > > If you expect some interactions to be very popular (more than a few > updates a second), you should probably look into sharded counters. > > -Nick Johnson > > > > On Wed, Aug 5, 2009 at 7:15 PM, Markitecht<markite...@gmail.com> wrote: > > > I am writing a dirt-simple tracking API. > > > For the sake of explanation, i will over-simplify my question even > > further. > > > I have an endpoint that accepts one item of string metadata, and saves > > a new instance of an Interaction object. > > > (the interaction object also saves the user and the date created) > > > How do i query Interaction to return the most popular > > 'interactions' (using those string metadata values), with a count for > > each? > > > This seems *so* simple, but i just can't figure out how to do it on > > AE. > > > Thanks, > > Christopher > > -- > Nick Johnson, Developer Programs Engineer, App Engine --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
