Whether to create connection every time when amqp.Dial is threadsafe or not in go lang

Question

As it is mentioned in the RabbitMQ docs that tcp connections are expensive to make. So, for that concept of channel was introduced. Now i came across this example. In the

Answer 1

Of course, you shouldn't create a connection for each request. Make it a global variable or better part of an application context which you initialize once at startup.

You can handle connection errors by registering a channel using Connection.NotifyClose:

func initialize() {
  c := make(chan *amqp.Error)
  go func() {
    err := <-c
    log.Println("reconnect: " + err.Error())
    initialize()
  }()

  conn, err := amqp.Dial("amqp://guest:guest@localhost:5672/")
  if err != nil {
    panic("cannot connect")
  }
  conn.NotifyClose(c)

  // create topology
}