This from a good friend of mine whose company made her learn Java to migrate from Perl CGI programs to BroadVision and Java:
it takes an average of 41 seconds for BV to look up a number in a mongohuge database and then writeÃÂ a record to its own database.
it takes an average of 2 seconds for Perl to do the same thing. and the perl app is on a much wimpier unix box.
--Nat