backoff-rxjs

backoff-rxjs

A collection of helpful RxJS operators to deal with backoff strategies (like exponential backoff)

intervalBackoff

intervalBackoff works similiarly to interval except that it doubles the delay between emissions every time.

name	type	attirbute	description
config	number | IntervalBackoffConfig	required	Can take number as initial interval or a config with initial interval, optional max Interval and optional backoff delay function (exponential by default)

interval is especially useful for periodic polls that are reset whenever user activity is detected:

fromEvent(document, 'mousemove').pipe(

    // There could be many mousemoves, we'd want to sample only
    // with certain frequency
    sampleTime(LOAD_INTERVAL_MS),

    // Start immediately
    startWith(null),

    // Resetting exponential interval
    switchMapTo(intervalBackoff({initialInterval: LOAD_INTERVAL_MS, maxInterval: MAX_INTERVAL_MS})),
  );

retryBackoff

name	type	attirbute	description
config	number | RetryBackoffConfig	required	Can take number as initial interval or a config with initial interval, optional max Interval, optional max number of retry attempts, optional function to cancel reties and optional backoff delay function (exponential by default)