Hey Janne,
The write-rate is a little lower and there is a slightly higher
latency with many operations. Otherwise within a transaction
everything is largely the same. The usage notes say "1 write per
second [is the] supported limit for entity groups." In practice you
might find you're able to handle bursts of higher rates. If you're
getting lots of contention on master-slave you might need to change
your design a bit, or at least test carefully.
http://code.google.com/appengine/docs/python/datastore/hr/overview.html
Robert
On Tue, May 24, 2011 at 13:15, Janne Savukoski <[email protected]> wrote:
> Heyo,
>
> Are there any differences between Master/Slave and High Replication
> regarding transactions? Are the transaction limits the same? (Is the
> limit still 4/sec/group or so?) Can I expect any differences in the
> rate of TransactionFailedErrors?
>
> I thought of asking this before relying on testing on a non-production
> environment, where the conditions for observing these are a bit hard
> to create.
>
> -jne
>
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