Re: ot: djbdns/daemontools

[Henning Brauer <lists@bsws.de>]

Am Freitag,  1. Dezember 2000 22:01 schrieb Brian Kifiak:
> > The data.cdb file should be cached by the os, so you should have
> > enough memory to do so
>
> no.  cdb was designed so you don't have to have enough memory to
> hold the records.
>
> http://cr.yp.to/cdb.html
>
>    "No random limits: cdb can handle any database up to 4 gigabytes.
>    There are no other restrictions; records don't even have to fit
>    into memory. Databases are stored in a machine-independent
>    format."
>
> sure it'll be faster if it's in memory.  but it doesn't have to be.

Oh, I wasn't clear. It _should_ fit into memory for perfomance, but it _need_ 
not to.
This point is important for the understanding why tinydns does not read the 
data into memory (like BIND does) and is anyway faster in usual operation.
-- 

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