High Replication -- Writes Way Higher Than Reads

[James Gilliam]

I frequently have way more writes (billing history) than reads on the
datastore and this seems very strange to me.

Typically, .3 million writes (300,000) and .06 million reads (60,000).

And I don't think I am writing to the datastore nearly the amount I am
reading from it -- I would think they would be the other way around.

This is like I read an entity and then write it 5 times. Am I being
charged for writing a record to multiple datacenters? Gives an
entirely new meaning to high replication.

What am I missing?

Plus, it would be great if we had more insights into these I/O
operations -- are they to service indexes?

Thanks

[Simon Knott]

Have you read this thread - https://groups.google.com/d/msg/google-appengine/mjnSqQWOfqU/cgPVeHbrR8oJ?

It explains what happens at the datastore when an entity is put, and how this converts into datastore writes.

[Francois Masurel]

Hi James,

The new GAE 1.5.4 SDK shows in the local dev DatastoreViewer how many write ops were needed to create each entity (check screenshot attached).

You will probably be suprised.

François

[objectuser]

That's very useful ... and, yes, surprising to me for sure!

Thanks for pointing that out, Francois.