On Wed, Dec 14, 2011 at 6:29 PM, Brandon Wirtz <[email protected]> wrote:
> I have a spatial Index running on GAE using Calculated Tessellations as
> indexed values.  Based on a talk given by someone at Google About How they
> optimized map searches for doing "with in radius" searches.

Yeah yeah yeah, we can (and often do) come up with workarounds when
necessary.  I use geohashing in a couple of my production apps.  But
it these workarounds provide *very* narrow bounds around the problem
domain.  One change to the sort, or one more inequality, and all bets
are off.

And that only works if your index is a well-known problem domain.  I
was one of the early testers of Backends and used it for the index
that makes http://www.similarity.com/ run.  I thought it was great.
Then Google announced pricing, and I quickly migrated the index to
rackspace cloud for one sixth the price.

I'm not saying there isn't always a workaround.  But often that
workaround is "abandon GAE for part of your application".  Of the four
major (and wildly-different) applications I've built on GAE, all have
required this "workaround".  I'm pretty ok with that, except when the
only reason it's necessary is because of a bonkers pricing decision.

Jeff

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