I agree here, although I have a word of caution about fetching before connecting. If all clients reconnect at once (or in a few seconds window), then you can end up sending a ton of requests to whatever provides your authentication service. For example, the equivalent of 1.2m rpm was being sent to our server when we did this, and it wasn’t specced for that.
One technique to avoid this is to always have a short lived token available. I use a 10 minute token that is fetched every 5-9 minutes to avoid thundering herd effect.
