I think this question is too abstract to have a great answer and also
depends on if you want the processing to occur on the client or server or
whether your client can hold entire lists of values...
The downside to option 1 is that you will need to retrieve the entire list
of objects, depending on
1.which is more performant - aggregating on client side and storing objects
as a list and retrieving the whole object as an a list or
2. storing objects using putAll and running queries to get the objects.
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