NDB query fetch() and ContextOptions

Question

I would like to disable context cache in only one of my queries. I thought I could do it like this:

MyModel.query(ancestor=user.key).fetch(100, options=ContextOp         


        

Answer 1

You should just be able to write

MyModel.query(........).fetch(limit, use_cache=False)

If that doesn't have the desired effect you're looking at some different bug. There should be no need to set a global cache policy for this purpose.

(It's true that at some point in the past, fetch() didn't support use_cache=...; but that's long been fixed. Also, there's no need to bother with use_memcache=...; it's not used by the query process at all.)