CircuitBreakerHandler.cs

using Polly;
using Polly.CircuitBreaker;

public class CircuitBreakerHandler
{
    private readonly IEmailService _emailService;
    private readonly ILogger _logger;
    private CircuitBreakerPolicy _circuitBreaker;

    public CircuitBreakerHandler(IEmailService emailService, ILogger logger)
    {
        _emailService = emailService;
        _logger = logger;
        _circuitBreaker = Policy
            .Handle<Exception>()
            .CircuitBreaker(
                exceptionsAllowedBeforeBreaking: 1,
                durationOfBreak: TimeSpan.FromSeconds(1)
            );
    }

    public void HandleNotification(Notification notification)
    {
        _circuitBreaker.Execute(() =>
        {
            try
            {
                _emailService.SendMessage(notification.Message);
            }
            catch (Exception e)
            {
                _logger.Log(e);
                throw;
            }
        });
    }
}