Re: Is bind-dlz ready for prime time?

Mark Jeftovic wrote:
> Hi, I have seen sql back-end patches for bind come and go over the
> years, I am wondering if bind-dlz is usable in a production environment,
> say over 100K zones, 200 queries per second and above as a baseline metric.
> 
> Are there any known TLD operators or commercial DNS providers using it
> who would care to talk about its stability?

Well, I manage some servers running DLZ using the BDBHPT driver, on 
fairly modest hardware (Pentium 4, 1-2GB ram).  The "master" db is in 
postgresql, and we use a small c++ daemon running on each dns node that 
coordinates with triggers in the postgresql DB to propagate changes from 
the SQL "master" db to the BDB database stored on each dns node in 
near-real-time.  Database size is approximately 60,000 zones and a total 
of 425,000  dns records.

The dns nodes have currently been up 278 days, and the last reboot was 
only to upgrade the kernel and core OS.

Each node is currently handling, on average, over 2000 queries per 
minute, and the machines are on average 90% idle.  They can obviously 
handle a lot more.

So yes, DLZ is extremely stable, and when used with the BDBHPT driver, 
*very* efficient.

Regards,
Michael Schout

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