On Sat, 19 May 2012 07:45:56 +0530
Nilesh Govindrajan <[email protected]> wrote:

> Hi,
> 
> Which is the best caching dns server? I'm presently using
> pdns-recursor, which is quite good, but doesn't have option to set
> minimum ttl (doesn't make sense, but some sites like twitter have
> ridiculously low ttl of 30s). Also, it isn't able to save cached
> entries to file so that it can be restored on next boot. Any option?

You can use almost any cache you want...

... except bind

We use unbound. Does the job, does it well, developer very responsive.

But do not fiddle with TTLs, that breaks stuff in spectacular ways.
Essentially, with the TTL the auth server is saying "We guarantee that
you can treat this RR as valid for X amount of time and suffer no ill
effects if you do"

What you want to do is break that agreement, which is really not s good
idea.

> 
> I am keeping my box 24x7 on because it serves as dns on my small home
> wifi, not acceptable to me, because network is almost off at night
> (only phone) and I have my router as secondary dns.

Just use Google's caches or OpenDNS. They do the job so much better
than you ever could. Why reinvent the wheel?



-- 
Alan McKinnnon
[email protected]


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