Hash gets created in the memory and will stay as long as the instance ( process ) that built is resident in the memory.

What am looking for is -

Process 'A' is spawned
Build hash data structure with 1 M entries
Assign a namespace ( example name : h-m1 ) to the above
Now process 'A' dies off, but h-m1 should still be resident in the mem
+ory that is they have to be resident even after the process which cre
+ated terminates.
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Now when another instance of process 'A' is spawned, without having to reconstruct the hash data structure with 1M entries, it should simply do a lookup using the namespace 'h-m1' ( or something like that )

Am trying to achieve some optimization on the time taken to construct the hash of 1M entries which is a big win for my script

Is that possible? Many thanks in advance :)