I think it is pretty clear in the faq. Doing a keys only request doesn't affect the db operation cost, it is counted as a read operation. I does however perform faster so this may reduce the number of instances you need thus reducing your costs in that area.
To come back to the original question, small datastore operations are the perfect candidates to be fetched out of memcache which is free. It is certainly going to be the first place I'm going to optimize. If you're spending $50 per day on these there really should be massive scope to reduce that cost using memcache. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/XNUHyToELDkJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
