What is the correct way to share the result of an Angular Http network call in RxJs 5?

Question

By using Http, we call a method that does a network call and returns an http observable:

getCustomer() {
    return          


        

Answer 1

rxjs 5.4.0 has a new shareReplay method.

• rx-book shareReplay()
• No docs at reactivex.io/rxjs

The author explicitly says "ideal for handling things like caching AJAX results"

rxjs PR #2443 feat(shareReplay): adds shareReplay variant of publishReplay

shareReplay returns an observable that is the source multicasted over a ReplaySubject. That replay subject is recycled on error from the source, but not on completion of the source. This makes shareReplay ideal for handling things like caching AJAX results, as it's retryable. It's repeat behavior, however, differs from share in that it will not repeat the source observable, rather it will repeat the source observable's values.