go开源cache2go项目蛤蟆笔记——简单使用--CFANZ编程社区

go开源cache2go项目蛤蟆笔记——简单使用-

1 下载开源

下载路径：https://github.com/muesli/cache2go

2 代码如下：

packagemain
 
import(
    "fmt"
    "time"
 
    "cache2go-master"
)
 
//Keys&valuesincache2gocanbeoffarbitrarytypes,e.g.astruct.
typemyStructstruct{
    text     string
    moreData[]byte
}
 
funcmain(){
    //Accessinganewcachetableforthefirsttimewillcreateit.
    cache:=cache2go.Cache("myCache")
 
    //Wewillputanewiteminthecache.Itwillexpireafter
    //notbeingaccessedviaValue(key)formorethan5seconds.
    val:=myStruct{"Thisisatest!",[]byte{}}
    cache.Add("someKey",5*time.Second,&val)
 
    //Let'sretrievetheitemfromthecache.
    res,err:=cache.Value("someKey")
    iferr==nil{
        fmt.Println("Foundvalueincache:",res.Data().(*myStruct).text)
    }else{
        fmt.Println("Errorretrievingvaluefromcache:",err)
    }
 
    //Waitfortheitemtoexpireincache.
    time.Sleep(6*time.Second)
    res,err=cache.Value("someKey")
    iferr!=nil{
        fmt.Println("Itemisnotcached(anymore).")
    }
 
    //Addanotheritemthatneverexpires.
    cache.Add("someKey",0,&val)
 
    //cache2gosupportsafewhandycallbacksandloadingmechanisms.
    cache.SetAboutToDeleteItemCallback(func(e*cache2go.CacheItem){
        fmt.Println("Deleting:",e.Key(),e.Data().(*myStruct).text,e.CreatedOn())
    })
 
    //Removetheitemfromthecache.
    cache.Delete("someKey")
 
    //Andwipetheentirecachetable.
    cache.Flush()
}