Angular2/4 : Refresh Data Realtime

Question

I need to refresh the data in a component page in an interval. Also I need to refresh the data after doing some action. I am using Obeservables in the service so that I can

Answer 1

Please don't forget to clearInterval on ngDestroy.

    ngOnDestroy() {
        this.unsubscribe.next();
        this.unsubscribe.complete();
        clearInterval(this.interval);
    }