test_cache.go

package main

import (
    "github.com/patrickmn/go-cache"
    "github.com/gin-gonic/gin"
    "log"
    "time"
)

func Logger() gin.HandlerFunc {
	return func(c *gin.Context) {
		t := time.Now()

		// Set example variable
		c.Set("example", "12345")

		// before request

		c.Next()

		// after request
		latency := time.Since(t)
		log.Print(latency)

		// access the status we are sending
		status := c.Writer.Status()
		log.Println(status)
	}
}

func Cacher(ca *cache.Cache) gin.HandlerFunc {
    return func(c *gin.Context) {
        c.Set("cache", ca)
    }
}


func main() {
    ca1 := cache.New(5*time.Minute, 10*time.Minute)

    r := gin.New()
	r.Use(Logger())
    r.Use(Cacher(ca1))

	r.GET("/test", func(c *gin.Context) {
        ca := c.MustGet("cache").(*cache.Cache)
        ca.Set("foo", "bar", cache.DefaultExpiration)
		example := c.MustGet("example").(string)

		// it would print: "12345"
		log.Println(example)
	})

    r.GET("/test1", func(c *gin.Context) {
        ca := c.MustGet("cache").(*cache.Cache)
        foo, found := ca.Get("foo")
        if found {
            log.Println(foo)
        } else {
            log.Println("not found")
        }

	})


	// Listen and serve on 0.0.0.0:8080
	r.Run(":8080")
}