Given a modular stack framework for mobile, where 

1) a "engine" stack to always open, but hidden on boot → call it "Stack Engine"
2) then you have multiple "modular" stacks -- call them views--which are opened 
and closed on "demand/navigation" → call them
                a. stack "story"
                b. stack "calendar"
                c. stack "book"
                        etc.

Now, we know that globals are inherently "evil," but I find myself resorting to 
a global called

        sConfigA 
                # with a growing number of keys,
                #  I know "s" is meant for local, it's a legacy thing 

Now we have performance issues where,  for a given view stack-- which may be 
open or closed:
                a) we dig the a local data base for "stuff" like a set of quotes
                b)  are a series of image paths

The result of such a dbase/disk operations, is usually a "trivial" amount 
data... say a list of 50 images paths or 100 quotes amount to 20K.

It is small matter for the RAM to keep these lists in memory and not have to go 
"searching" again, so you have performance gain when you come back to say -- 
Stack "story"

There are two ways to go with this:

1) keep adding "keys" to the BIG global sConfigA 
OR
2) we could keep the custom properties of Stack Engine (which is always open) 

Does anyone have experience and has come to "best practices" for this 
architecture? And why?

How does Levure handle this?

BR



   



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