1. Install the github.com/astaxie/beego/cache package using the go get command, as follows:

$ go get github.com/astaxie/beego/cache

2. Move to $GOPATH/src/my-first-beego-project/controllers and create cachecontroller.go, where we will define the GetFromCache handler, which will get the value for a key from a cache and write it to an HTTP response, as follows:

package controllers
import 
(
  "fmt"
  "time"
  "github.com/astaxie/beego"
  "github.com/astaxie/beego/cache"
)
type CacheController struct 
{
  beego.Controller
}
var beegoCache cache.Cache
var err error
func init() 
{
  beegoCache, err = cache.NewCache("memory",
  `{"interval":60}`)
  beegoCache.Put("foo", "bar", 100000*time.Second)
}
func (this *CacheController) GetFromCache() 
{
  foo := beegoCache.Get("foo")
  this.Ctx.WriteString("Hello " + fmt.Sprintf("%v", foo))
}

3. Move to $GOPATH/src/my-first-beego-project/routers and edit router.go to add the GET mapping /getFromCache, which will be handled by the GetFromCache handler defined in a CacheController, as follows:

package routers
import 
(
  "my-first-beego-project/controllers"
  "my-first-beego-project/filters"
  "github.com/astaxie/beego"
)
func init() 
{
  beego.Router("/", &controllers.MainController{})
  ... 
  beego.Router("/getFromCache", &controllers.
  CacheController{}, "get:GetFromCache")
}

4. Run the program using the following command:

$ bee run