Golang serialize and deserialize back

Question

What's the best way (completeness and performance) in Golang to serialize and deserialize a struct to string and vice versa?

for example, if I have this struct:

struct Session {
   Properties map[string]interface{}
   Permissions []int64
}

I want to store it on Redis and fetch it back. I have tried to save, int and string, it's fine, but how to store struct object?

conn := redisConnectors.Get()

// set example

_, err := conn.Do(`SETEX`, `uid_key`, EXPIRE_SEC, user_id)
_, err = conn.Do(`SETEX`, `email_key`, EXPIRE_SEC, login_email)

// get example

user_id, err := redis.Int64(conn.Do(`GET`, `uid_key`))
login_email, err := redis.String(conn.Do(`GET`, `email_key`))

Answer 1

Using gob and base64 could solve the problem, for example:

import (
    "encoding/base64"
    "encoding/gob"
    "bytes"
)

type SX map[string]interface{}

// go binary encoder
func ToGOB64(m SX) string {
    b := bytes.Buffer{}
    e := gob.NewEncoder(&b)
    err := e.Encode(m)
    if err != nil { fmt.Println(`failed gob Encode`, err) }
    return base64.StdEncoding.EncodeToString(b.Bytes())
}

// go binary decoder
func FromGOB64(str string) SX {
    m := SX{}
    by, err := base64.StdEncoding.DecodeString(str)
    if err != nil { fmt.Println(`failed base64 Decode`, err); }
    b := bytes.Buffer{}
    b.Write(by)
    d := gob.NewDecoder(&b)
    err = d.Decode(&m)
    if err != nil { fmt.Println(`failed gob Decode`, err); }
    return m
}

and when you need to serialize custom struct or type (for example Session struct), just add these lines:

func init() {
    gob.Register(SX{})
    gob.Register(Session{}) 
}