Couple good answers already. I recommend searching the CPAN for caching, especially dedicated caches or file caches—file cache. I like CHI as a unified front end to many caches. Caches are great, some are robust (some aren’t designed to be), they will all be slower than a plain hash (some much slower).

In reply to Re: storing hash in temporary files to save memory usage by Your Mother
in thread storing hash in temporary files to save memory usage by Anonymous Monk

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