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[RxJS 6] The Retry RxJs Error Handling Strategy
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When we want to handle error observable in RxJS v6+, we can use 'retryWhen' and 'delayWhen':
const courses$: Observable<Counse[]> = http$
.pipe(
tap(() => console.log("HTTP request")),
map(res => Object.values(res['payload'])),
shareReplay(), // avoid using async pipe multi times causing multi network request
retryWhen(errors => errors.pipe(
delayWhen(() => timer(2000)) // wait 2s after the error observable happens
))
)
