If two processes modify the same entity concurrently, but only modify different properties, can they potentially overwrite the changes made by the other process when calling DatastoreService.put?
I am trying to understand the 1-to-many relationships in datastore; but I fail to understand how query and update the record of a user when the model includes ReferenceProperty. Say I have this model:
Hi I have an issue on querying for subsecond accuracy queries from GQL.. Wondering if anyone had similar issues or workarounds.
Following up on my earlier question regard开发者_C百科ing GAE Datastore entity hierarchies, I\'m still confused about when to use entity groups.
i am using python for developing Goog开发者_StackOverflow中文版le app engine application. my question is that while in development several times we need to modify the data models for adding, deleting
There is a nice explanation of 1-to-many relationships in datastore here by Rafe Kaplan. I tried to adapt that to a simpler case of User and Venue. So user can go to many restaurants; and I want to pr
i will like to have two types of entities referring to each other. but python dont know about name of second entity class in the body of f开发者_开发问答irst yet.
I\'m trying to get a list of entity types that have been persisted as documented, but the queries do not return any results on the development server.
I´m thinking about to write an application will have to store a small amount of records per user (<300) but hopefully will have a lot of users (>>1000).
I have a Model() called Member and I\'m inserting new entries using Member.get_or_insert(key_name=\'lipis\') for example.
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