I want to add analytics and reports to my application on Google App Engine. Can you tell me how I can do that on google’s “database”? Are there any oss libraries/tools available?
Thank you
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Look at the new Map Reduce API (it doesn’t contain reduce yet, but that’s what Google calls it anyway).
This makes it easy to map over all the entities of a type in your datastore and count the things you’re interested in.
Christopher O’Donnell has an article about using the Mapper API for analytics. He creates time slices (hour, day, month) ahead of time and maps over those to store the data for each time slice.