Retrying on failure

Livebox can retry the request when an error occurs during the execution of fetcher instance. There are two strategies that can be used:

• Interval, using .retry(RetryStrategy.INTERVAL), this retries the request 3 times with a 1 second interval between each try.

• Exponencial backoff, this is a known strategy that works very well when dealing with network errors. Exponencial backoff uses the formula $f(x) = b^x$to calculate the delay with a 1 second interval between each try, for a max of 3 times.