That's good advice. I would go one step further to advocate DB_File (or more recently BerkleyDB) as it is the ultimate persistent hash'es especially big ones, and I quote
Berkeley DB's high performance and scalability support thousands of simultaneous users working on databases as large as 256 terabytes.

 
______crazyinsomniac_____________________________
Of all the things I've lost, I miss my mind the most.
perl -e "$q=$_;map({chr unpack qq;H*;,$_}split(q;;,q*H*));print;$q/$q;"

In reply to (crazyinsomniac )Re^2: Saving Large Hashes to Disk via Storable.pm by crazyinsomniac
in thread Saving Large Hashes to Disk via Storable.pm by kingman

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