in reply to Caching or using values across multiple programs

You can use the DBM hash. Using DBM hash the data will get stored in a database file, and at the same time it is as easy as working with hashes. Here, is a sample code to work with DBM hashes,
#!/usr/bin/perl use strict; use warnings; my %hash; # To open a dbmfile and associate with hash dbmopen(%hash, "nagalenoj", '0666') || die "Can't open database file!" +; $hash{'one'}="1"; $hash{'two'}="2"; $hash{'three'}="3"; #Retrieving values print $hash{'three'}; dbmclose %hash;