Revel Cache Viewer creates a text revel.Result that displays the cache in a readable format if it is the "InMemoryCache" (not using memchached).

Revel Cache Viewer.go

package controllers

import (
	"encoding/gob"
	"fmt"
	"github.com/robfig/revel"
	"github.com/robfig/revel/cache"
	"os"
	"path/filepath"
	"time"
)

type Dev struct {
	*revel.Controller
}

type item struct {
	Object     interface{}
	Expiration *time.Time
}

// test function
func (c Dev) Cache() revel.Result {
  var myType string
	var test int
	cache.Get("test", &test)
	test++
	cache.Set("test", test, time.Duration(30*time.Second))
	path := filepath.Join(revel.BasePath, "files", "cache")
	switch i := cache.Instance.(type) {
	case cache.InMemoryCache:
		myType = "InMemoryCache"
		i.Cache.SaveFile(path)
	default:
		return c.RenderText("Type: Unknown")
	}
	fd, err := os.Open(path)
	defer fd.Close()
	if err != nil {
		return c.RenderText(err.Error())
	}
	dec := gob.NewDecoder(fd)
	items := map[string]*item{}
	err = dec.Decode(&items)
	var result string
	if err != nil {
		return c.RenderText(err.Error())
	}
	for k, v := range items {
		result = fmt.Sprintf("%s  [%s]\n    Expiration = %+v\n    Object = %+v\n\n", result, k, v.Expiration, v.Object)
	}
	return c.RenderText(
		"Type: %s\n\n"+
			"Decode:\n%v\n\n"+
			"Results:\n%v\n",
		myType, items, result)
}