On 2/27/08, Chris Bailey <[EMAIL PROTECTED]> wrote:
>  I'm wondering if you run DB's
>  on EC2 or not, and if you do, how we're guaranteed (so to speak) that
>  our data is persistent through an EC2 node going away?

We do run the databases on EC2.  All data is backed up to S3.

>  Further, can you discuss how the database side of things scales?

At the moment, we're not doing any vertical scaling of the database.
Once we've got a few apps that are using a substantial portion of the
total capacity of an 8-core instance, we'll be starting to tackle this
problem.

Some of the techniques we'll be considering when that time comes:
memcaching the reads, read-only slaves via Slony, and the automatic
partitioning features built into Postgres 8.3.

Adam

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