When should I use `publishReplay` vs `shareReplay`?

Question

I already know that

• publish shares a single subscription and also returns a ConnectableObservable ( so we have to Connect(

Answer 1

publishReplay allows you to controls when the subscription starts. shareReplay will start automatically upon the first subscription.

Generally, if the observable is to be used in a template (html file) use shareReplay. The advantage being you won't have to worry about unsubscribing etc.