Testing redis with Go

redis.go

/*
https://golang.org/doc/code.html#GOPATH
definir a variavel GOPATH

> http://gopkg.in/redis.v3
dentro do caminho definido na GOPATH, executar:
go get gopkg.in/redis.v3
*/

package main

import (
	"fmt"
	"gopkg.in/redis.v3"
	"time"
)

func main() {
	client := redis.NewClient(&redis.Options{
		Addr:     "localhost:6379",
		Password: "", // no password set
		DB:       0,  // use default DB
	})

	pong, err := client.Ping().Result()
	fmt.Println(pong, err)
	// Output: PONG <nil>
	
	name := "name"
	// O terceiro parametro é o tempo para o valor expirar
	err2 := client.Set(name, "Armando", 10*time.Second).Err()
	if err2 != nil {
		panic(err)
	}

	val, err := client.Get(name).Result()
	if err != nil {
		panic(err)
	}
	fmt.Println(name, val)
	// Output: name Armando
	
	val2, err := client.Get("key2").Result()
	if err == redis.Nil {
		fmt.Println("key2 does not exists")
	} else if err != nil {
		panic(err)
	} else {
		fmt.Println("key2", val2)
	}
	// Output: key2 does not exists
}