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Re: maybe a dumb idea on how to fix the dns problems i don't know....
Joe Greco wrote:
Pretending for a moment that it was even possible to make such large scale changes and get them pushed into a large enough number of clients to matter, you're talking about meltdown at the recurser level, becauseCouldn't the resolver libraries be changed to not use multiple connections?
Well how I read what you first wrote implied that the resolvers are now going to DOS servers with millions of connections due to each resolver stub making a TCP connection... I say this is something that if true, can and should be changed.
Now you say that file descriptors on the client are going to run out Isn't that changing the topic? And is that even really a problem?
So each process that needs to do a lookup opens a file descriptor for a TCP connection, right? Whereas with UDP we don't have to do this. Is this what I'm hearing you say? That I understand. (Hmm don't udp connections take sockets too? Not sarcastic here.. just asking...)
And it is a good point but is this client file descriptor an insurmountable problem? Also, what about the millions of connections to the server? Is that really necessary for a dns resolver on one system to open more than one TCP connection to its caching dns server?
I'm not saying that caching dns servers should keep open TCP connections to authoritative name servers! OK? But how much latency do you increase e on that uncached recursive lookup by changing to TCP?
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