Sounds like an on-disk database is the way to go here.
In particular, take a look at the rather amazing DBD::SQLite, a complete SQL92 fast database with transactions and triggers... without the database server!

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to •Re: Re: A more memory efficient storage structure? by merlyn
in thread A more memory efficient storage structure? by JPaul

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