Re: Invoking cdbdump from a bash script, hanging

On Wed, Dec 18, 2002 at 09:22:54PM -0800, Chris Wilkes wrote:
>   I'm making a CDB database with really simple entries: an MD5 hash of
> an email's body and a 0 or 1 if it is non-spam or spam.  A typical
> transaction would be asking if an MD5 entry is in there.  A non-typical
> one would be changing an entry's value from 0 to 1 or vice versa.
>   I was going to use the Perl module CDB_File but it gets pretty slow
> when you have 50k+ entries.
>   Then I thought about using cdbdump as the database is pretty simple.

If you don't change the length of a value, you can edit the value in the
binary cdb directly, without recreating the hashes.  This is faster than
both of your solutions.

I've written such a small program for the tinydyndns package.  If you
want, take a look at the tinydyndns-update.c source as example, it's
very simple.

Regards, Gerrit.