retry

Description:

retry

Retry for dart #
This package provides an easy way to retry asynchronous functions. This is
often useful to avoid crashing on intermittent errors such as broken
connections or temporarily overloaded servers.
Disclaimer: This is not an officially supported Google product.
Using retry #
For simple retry logic with exponential back-off use the retry function
provided by this package.
import 'package:retry/retry.dart';

final response = await retry(
// Make a GET request
() => http.get('https://google.com').timeout(Duration(seconds: 5)),
// Retry on SocketException or TimeoutException
retryIf: (e) => e is SocketException || e is TimeoutException,
);
print(response.body);
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Defaults to 8 attempts, sleeping as following after 1st, 2nd, 3rd, ...,
7th attempt:

400 ms +/- 25%
800 ms +/- 25%
1600 ms +/- 25%
3200 ms +/- 25%
6400 ms +/- 25%
12800 ms +/- 25%
25600 ms +/- 25%

Using RetryOptions #
This package provides RetryOptions which defined how many times to retry
an function and how long to sleep between retries.
final r = RetryOptions(maxAttempts: 8);
final response = await r.retry(
// Make a GET request
() => http.get('https://google.com').timeout(Duration(seconds: 5)),
// Retry on SocketException or TimeoutException
retryIf: (e) => e is SocketException || e is TimeoutException,
);
print(response.body);
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