1.go开源cache2go项目笔记——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()
}
3 执行如下Found value in cache: Thisis a test!
Item is not cached(anymore).
Deleting: someKey This is a test! 2016-07-12 16:31:57.0289334 +0800 CST
