I've always been a big fan of far-futures expiry headers. First time visit on my site's homepage results in 40 HTTP requests, but a subsequent visit comes in at 1, with a response as snappy as you'd expect. This is great, very happy.

I've just learnt about dns-prefetch and preconnect though. I can see that they'd help (marginally) with a first-time load, but I assume the extra overhead is a bad thing on subsequent loads, since I'd be initiating some DNS lookups/SSL handshakes for domains which then don't even get used.

What's the best practice, or how have you tackled this?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.