App Engine. Here is the situation:
I have a database with about about 50k rows of type A, and maybe 500k
rows of type B.
Type A contains:
- ReferenceProperty (to type B)
- DateTimeProperty
- IntegerPropery
- 3 x StringProperty (at most 5 bytes each)
I am performing the following query:
def myQuery():
query = A.all().filter('intProperty', val).filter('date >=', date)
itemAs = [itemA for itemA in query]
itemBs = [itemA.typeB for itemA in itemAs]
return itemBs
Even under no load, when retuning a modest number of elements, this
function takes so long! For example, I'm looking at a log entry where
for 36 items the database took 0.4s to create the list of itemAs and
2.2s to create the list of itemB's. Does this seem excessive? What
can I do to speed this up? I was planing on these databases to grow
10x in size (although the queries will return the same number of
items) so this is concerning.
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