dnscache

README

OVERVIEW

paepcke.de/dnscache

• 100 % api compatible with stdlib dns net package (100% api coverage for simple api) just plug&play
• thread safe, memory efficient, low-latency, ignore (bungled) dns ttl and enforce caching for 24 hours
• less than 350 LOC, 100 % pure golang, stdlib only, external dependency free, easy to use
• see api.go for details

SHOWTIME

default golang resolver vs. dnscache ( latency / alloc )

goos: freebsd
goarch: arm
pkg: paepcke.de/dnsache/cmd/dnsbench
Benchmark_stdlib-4     	       1	10403693854 ns/op	21246312 B/op	  245988 allocs/op
Benchmark_dnscache-4   	     531	    2247311 ns/op	       0 B/op	       0 allocs/op
PASS

DOCS

pkg.go.dev/paepcke.de/dnscache

CONTRIBUTION

Yes, Please! PRs Welcome!

Documentation

Overview

package dnscache provides an example async and multithreaded map based dnscache

package dnscache ...

Index

• func CleanCache()
• func LookupAddr(addr string) ([]string, error)
• func LookupCNAME(host string) (string, error)
• func LookupHost(host string) ([]string, error)
• func LookupIP(host string) ([]net.IP, error)
• func LookupMX(host string) ([]*net.MX, error)
• func LookupNS(host string) ([]*net.NS, error)
• func LookupSRV(service, proto, name string) (string, []*net.SRV, error)
• func LookupTXT(host string) ([]string, error)

Functions

func CleanCache

func CleanCache()

CleanCache ...

func LookupAddr

func LookupAddr(addr string) ([]string, error)

LookupAddr ...

func LookupCNAME

func LookupCNAME(host string) (string, error)

LookupCNAME ...

func LookupHost

func LookupHost(host string) ([]string, error)

LookupHost ...

func LookupIP

func LookupIP(host string) ([]net.IP, error)

LookupIP ...

func LookupMX

func LookupMX(host string) ([]*net.MX, error)

LookupMX ...

func LookupNS

func LookupNS(host string) ([]*net.NS, error)

LookupNS ...

func LookupSRV

func LookupSRV(service, proto, name string) (string, []*net.SRV, error)

LookupSRV ...

func LookupTXT

func LookupTXT(host string) ([]string, error)

LookupTXT ...