Julia capped exponential backoff retry helper

using Random

function retry_with_backoff(f; attempts=5, base=0.05, cap=2.0)
    for i in 1:attempts
        try
            return f()
        catch
            i == attempts && rethrow()
            delay = min(cap, base * 2.0^(i - 1))
            sleep(delay * (0.5 + rand()))  # jitter avoids thundering herds
        end
    end
end

# retry_with_backoff(() -> HTTP.get(url)) handles transient failures
println(retry_with_backoff(() -> sqrt(16)))