pool.ntp.org using Go

[Nick Sarten]

I saw some interesting chatter on irc about part of pool.ntp.org being reimplemented in Go, and thought others on the mailing list might find it interesting.

<\ask> Hi everyone - I am just learning Go and ran into a surprise using a closure. I made a gist of it: https://gist.github.com/3445361
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<\ask> the "xmain" version there prints "b" twice; do I really have to setup the closure in a separate function as in the commented out version to have it work as I expected?
<jessta> quiznilo: gob is just a serialsation format that supports all Go types, it's faster to use gob than json in Go.
<davecheney> adg: what OS is your darwin builder running ?
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<quiznilo> \ask there is a FAQ question about that
<jessta> \ask: closures capture the variables not their values.
<\ask> quiznilo: The go_faq on golang.org ?
<james4k> yes which is so much more valuabe
<\ask> jessta: Ok, so the commented out version I had is the idiomatic version?
<james4k> valuable*
<quiznilo> \ask: It was http://golang.org/doc/go_faq.html#closures_and_goroutines which is *sort* of the same concept
<quiznilo> I was wrong
<james4k> no you wouldn't use a closure for that
<\ask> james4k: I think I can see that, it just wasn't for my first use case so I got surprised. So far there's otherwise been a lot of "do what I mean" goodness in Go. :-)
<WOFall> no you're right, it's exactly that faq
<\ask> quiznilo: thanks
<quiznilo> sure
<\ask> One of my hobbies is maintaining the pool.ntp.org system (which some of you probably use); my first Go project is re-implementing the DNS server that system uses in Go.
<quiznilo> I've used it :D
<quiznilo> wow
<quiznilo> kinda high-profile
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<james4k> sounds like a great use case
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<\ask> james4k: Yes, I hope so. The current server is implemented in Perl (with Net::DNS::Nameserver) and it's too slow.  At the top of the hour the system gets 5-10k queries a second and it can't keep up at all even with more than a dozen (mostly slow-ish) servers.

[oran...@gmail.com]

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