Is there a difference between using NSURLConnection with delegate call backs and sendAsynchronousRequest:queue:completionHandler:?

Question

I'd like to understand what the difference is between using –initWithRequest:delegate: with delegate methods and +sendAsynchronousRequest:queue:completionHandler:.

Are there some performance differences based on the number of requests, or any other criteria?

Answer 1

sendAsynchronousRequest:queue:completionHandler is an easier call to make. initWithRequest:delegate gives you more control over things like caching, redirects, downloading large or incremental amounts of data, canceling requests, etc, etc.