mongodb - Best practice to maintain a mgo session

Question

I'm currently using a mongodb with mgo lib for a web application, but I'm not sure if the way I'm using it, is good one ..

package db

import (
    "gopkg.in/mgo.v2"
)

const (
    MongoServerAddr = "192.168.0.104"
    RedisServerAddr = "192.168.0.104"
)

var (
    MongoSession, err = mgo.Dial(MongoServerAddr)

    MDB  = MongoSession.DB("message")
    MCol = MDB.C("new")
    MSav = MDB.C("save")

    UDB  = MongoSession.DB("account")
    UCol = UDB.C("user")
)

I init the db session and create variables who takes the collection and document value, so when I need to query a collection, I use the variable to make it.

Like that :

func UserExist(username string) bool {
    user := Users{}
    err := db.UCol.Find(bson.M{"username": username}).One(&user)
    if err != nil {
        return false
    } else {
        return true
    }
}

So is there a best practice or this one is fine ..? Thanks

Answer 1

Waitting for answers