As apl indicates - your current storage mechanism is already pretty fast.

Perhaps if we had more information on your problem domain, better suggestions could be made.

For example, are all the keys numeric, under 2M ? Have you tried pre-allocation of the keys ? An in-memory database ? An AOA, instead of a HOH ?

     "How many times do I have to tell you again and again .. not to be repetitive?"

In reply to Re: Fast data structure..!!! by NetWallah
in thread Fast data structure..!!! by MimisIVI

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