python - How to clear cache for specific model in NDB

Question

I am in the process of transitioning to the NDB, and I am using two model sets: one based in plain old google.appengine.ext.db and one based on new fancy google.appengine.ext.ndb.

I would like to use NDB-based models for read-only and retain the caching that's built into NDB, while being able to store changes using the old models (and signal the need to update caches to the NDB when needed).

How can I flush/clear cache for a specific model instance in the NDB while saving changes in the model based on old db?

Answer 1

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