Hi there,
Firstly, the new Datastore statistics are really wonderful, and
finally I can delete all those test applications I've been accruing
this past year. :)
The new statistics however raise a curious issue: in one of my
applications, I have a very simple kind ("EmailAddressBlock") whose
only field is a DateTimeProperty and main data is stored in the
key_name - usually no more than 20 bytes.
Looking at the stats for this kind, I see that each entity is taking
up on average 150 bytes – of which 84% is spent on metadata. I'm
wondering if there is more detail available for the metadata; does
this include single property index costs? It seems rather high - given
that these entities are only storing about 30 bytes of unique data
(and use just one single property index).
Does the metadata cost scale with field count/type, or is it constant?
I presume the cost of storing the key and its path are part of it.
Thanks,
David
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