[Cialug] Blocking

[Zachary Kotlarek]

On May 8, 2009, at 10:57 AM, Daniel A. Ramaley wrote:

> My internal DNS server doesn't forward requests to my ISP. Why would i
> do that when i can just use the root servers directly?


A) Only a few ms away
B) May require less (or no) recursion based on cache-hits
C) May have less latency when recursion is required

I agree if your ISP is not reliable you might want to skip them, but  
there might still be some benefit to using an external DNS cache if  
you're on a medium or high-latency connection, or if there's a  
reasonable chance of cache-hits given other users of the cache.

Plus it reduces upstream load, which is a friendly thing to do.

	Zach

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