Polly C# retry exponentially for 3 tries then switch to retrying every hour

Question

I am trying to use polly to construct a policy that can retry exponentially for n tries and then switch to retrying every 1 hour. Can this be achieved?

I tried policy Wrap but did not get the desired results

Answer 1

This should be possible to achieve with overloads accepting custom sleepDurationProvider. For example something like the following:

var waitAndRetry = Policy
    .Handle<SomeException>()
    .WaitAndRetry(4, retryAttempt => retryAttempt switch // or WaitAndRetryForever
    {
        <= 3 => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), // for example n == 3
        _ => TimeSpan.FromHours(1)
    });