ConfigCircuitBreaker.cs

private CircuitBreakerPolicy CircuitBreakerPolicy()
{
    var circuitBreaker= Policy<ApiResponse>
        .Handle<HttpRequestException>()
        .CircuitBreakerAsync(
            durationOfBreak: TimeSpan.FromSeconds(30),
            handledEventsAllowedBeforeBreaking: 1,
            onBreak: async (result, timeSpan) =>
            {
                await CircuitOpen(result,timeSpan);
            },
            onReset: async () =>
            {
                var msg ="CLOSING CIRCUIT! (CIRCUIT RESETED)";
                _log.LogWarning(msg);
            });

    return circuitBreaker;
}

private async Task CircuitOpen(DelegateResult result, TimeSpan timeSpan)
{
    var msg =
            $" OPENED CIRCUIT (CIRCUIT BREAKED): {timeSpan} |" +
            $" WAITING: {timeSpan} |" +
            $" STATUSCODE: {result.Result.StatusCode} |" +
            $" REASONPHRASE: {result.Result.ReasonPhrase} |";
            
    _log.LogWarning(msg);
}