How do you implement resilient HTTP calls (retries, timeouts) in MAUI?

Wrap HttpClient with Polly via IHttpClientFactory's AddPolicyHandler to add retry with backoff, circuit breakers, and timeouts. This handles transient failures common on mobile networks without scattering try/catch and manual retry loops.

builder.Services.AddHttpClient<IApiClient, ApiClient>()
    .AddTransientHttpErrorPolicy(p =>
        p.WaitAndRetryAsync(3, r => TimeSpan.FromSeconds(Math.Pow(2, r))));