FeedDao.cs

public class FeedDao
{
    private readonly RetryPolicy retryPolicy;
 
    public FeedDao()
    {
        // setup retry policy that will try 3 times, with fast retry for first time and then 
        // with incremental interval by 1.5 seconds.
        this.retryPolicy =
            new RetryPolicy<DownloadFeedTrasientErrorDetectionStrategy>(
                new Incremental(3, TimeSpan.FromSeconds(0), TimeSpan.FromSeconds(1.5)) 
                            { 
                                FastFirstRetry = true 
                            });
 
        // Set tracing if retry happened.
        this.retryPolicy.Retrying += (s, e) =>
            Trace.TraceWarning("An error occurred in attempt number {1} to download feed: {0}", e.LastException.Message, e.CurrentRetryCount);
    }
 
    public void GetFeed()
    {
        this.retryPolicy.ExecuteAction(() => this.DownloadFeed(feed_source));
    }
 
    private string DownloadFeed(string source)
    {
        // logic to retrieve feeds
        return result;
    }
}