I have a list of URLs, the number of which is unknown until it stops (depending on some condition).
This is how I am currently using them:
from(observableUrls)
.pipe(
mergeMap(url => callHttpService(url) , 4),
retryWhen(
// Looking for an algorithm or suggestion?
)
).subscribe( result => {
// Processing results
});
How can I implement retry without restarting all over again if some of the URLs fail?
StackBlitz:
It is recommended to incorporate the retryWhen method within the observable pipeline of each individual callHttpService(url) like so:
from(observableUrls)
.pipe(
mergeMap(url => callHttpService(url)
.pipe(
retryWhen(
// insert your custom retry logic here
)
) , 4)
).subscribe( result => {
// process the received results accordingly
});
By including retryWhen within the inner Observable (callHttpService(url)) pipeline, it guarantees that only that specific observable will be retried based on the defined retryWhen logic.
I hope this explanation proves useful.
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