About

This is a simple mutex library using memcached for the Go programming language (http://golang.org/).

Memcached client is golibmc (https://github.com/douban/libmc/blob/master/src/golibmc.go)

GoDoc is Here (https://godoc.org/github.com/mosasiru/mcmutex)

Installing

Using go get

$ go get github.com/mosasiru/mcmutex

After this command mutex is ready to use. Its source will be in:

$GOPATH/src/github.com/mosasiru/mcmutex

Example

import (
    "github.com/douban/libmc/golibmc"
    "github.com/mosasiru/mcmutex"
)

func main() {
    mc := golibmc.SimpleNew([]string{"127.0.0.1:11211"})
    mutex := mcmutex.NewMCMutex(mc)
    defer mutex.Unlock("key")
    if err := mutex.Lock("key"); err != nil {
        println("lock failed")
        return
    }
    ...
}

Configure

Retry

retry count before acquisition lock (default: 0)

Interval

retry interval (default: 10ms)

Expiration

lock will be expired after Expiration time (default: 30s)

Appendix

This library features perl's KeyedMutex::Memcached (http://search.cpan.org/~zigorou/KeyedMutex-Memcached-0.01/lib/KeyedMutex/Memcached.pm)