Comments on: Simple Tips to Build Scalable Websites

By: Nicolas

Nicolas — Thu, 02 Jul 2009 16:13:57 +0000

crystal clear… Thanks Erwan !

By: erwan

erwan — Wed, 01 Jul 2009 15:36:17 +0000

Hi James,

Thanks for the typo. You’re right to talk about the datastore, it’s not SQL. The hardest part is actually to learn and deal with the differences with SQL; I’ve been using it recently and I have yet to get stuck on a problem.

It is based on BigTable that Google uses internally for pretty much all of their projects, and Amazon proposes something similar with their SimpleDB. I beliebe that most of the limitations are necessary to be able to scale painlessly.

The most annoying thing I found is that “like” search is a pain (isn’t it ironic, for Google?)
See: https://groups.google.com/group/google-appengine/browse_thread/thread/9b34227e7efc815e

By: James Thiele

James Thiele — Wed, 01 Jul 2009 15:27:08 +0000

You wrote about Google App Engine:
since it’s programmed in a particular way it’s not easy to your project out of it.

You probably left out a word after “to”.

You also don’t mention limitations in Google App Engine’s datastore – it’s not a SQL DB, making some things difficult and others impossible.