I implemented a very basic microblog app:
http://microbloog.appspot.com/
Regards!
On Mar 11, 10:21 am, peterk <peter.ke...@gmail.com> wrote:
> I just read on your blog (from January) the intention to release the
> appengine port of Jaiku as open source when the port is finished..but
> I was wondering if I could be so cheeky as to jump ahead with a couple
> of questions about it. The requirements of Jaiku seem to line up
> roughly similarly with issues I'm having in a slightly different
> context, that I'm finding pretty challenging to implement efficiently
> on app engine.
>
> With your service, you seem to track updates for friends and other
> people I follow..so I might have a long list of people I'm following,
> and you feed me their updates.
>
> How do you implement this on GAE?
>
> I've been toying with a very similar problem for some time now. It
> seems to me you cannot chain together queries such as
> me.friends.updates.order(..) to get your friends' latest updates, for
> example. You can't make n writes to n update queues for n people
> following you, since writes are so costly. If I store my friends in a
> list of keys, this limits the number of friends I can query at a given
> time to 30. e.g. updates.all().filter('user IN', me.friends) is
> limited to 30 subqueries. I may have many more friends, so this
> approach doesn't seem to be sufficient.
>
> I've been scratching my head over a similar problem for some time now,
> coming up with various hairbrained schemes that have been overly-
> complex, none of which deliver scalability to the nth degree. So I'd
> really, really, really appreciate any insight you could provide in
> implementing this kind of data model on GAE!! Many thanks!
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