A simple, go-based DNS resolver/caching server

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README.MD	add benchmark test	2013-07-25 12:32:57 +08:00
cache.go	cache add expire strategy	2013-07-25 00:09:07 +08:00
godns.conf	add redid cache backend in todo list	2013-07-24 22:40:18 +08:00
godns_test.go	add benchmark test	2013-07-25 12:32:57 +08:00
handler.go	cache add expire strategy	2013-07-25 00:09:07 +08:00
main.go	add benchmark test	2013-07-25 12:32:57 +08:00
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server.go	first commit	2013-07-23 19:10:38 +08:00
settings.go	cache add expire strategy	2013-07-25 00:09:07 +08:00

GODNS

A simple and fast dns cache server written by go.

Similar as dnsmasq ,but support some difference features:

Install & Running

Build

 $ cd $GOPATH/src/github.com/kenshinx/godns 
 $ go build -o godns *.go

Use

 $ sudo vi /etc/resolv.conf
 nameserver 127.0.0.1

All the configuration on godns.conf a TOML formating config file.
More about Toml :https://github.com/mojombo/toml

Upstream server can be configuration by change file from somewhere other that "/etc/resolv.conf"

[resolv]
resolv-file = "/etc/resolv.conf"

If multi namerserver set at resolv.conf, the upsteam server will try in order of up to botton

Only the local memory storage backend implemented now. The redis backend is in todo list

[cache]
backend = "memory"   
expire = 600  # default expire time 10 minutes
maxcount = 100000

$ go test -bench=.

testing: warning: no tests to run
PASS
BenchmarkDig-4	    5000	    435141 ns/op
ok  	_/Users/kenshin/workspace/godns	2.270s

The result : 2200 queries/per second

The enviroment of test:

MacBook Air