On Thu, Nov 3, 2011 at 5:24 PM, mscwd01 <[email protected]> wrote:
>
> One entity with, say, 5 properties would take at least 5 (probably
> more) write operations to persist it. This means 40,000 * 5 would be
> 200,000 datastore operations - way over the free limit.

It doesn't work this way, but you're right that I'm probably
undercounting.  GAE writes once for the entity and then once for each
index - not for each property.  You get as many properties as you want
(up to the 1MB entity size limit) "free" as long as they are
unindexed.

Still, each indexed property is two additional writes (one asc, one
desc) and must be factored in to the plan.

On the other hand, only a small percentage of the OP's 40k page views
are likely writes, and "overage" is ten cents per 100k writes.  This
is not his/her problem.

Jeff

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