DNS-prefetch and preconnect: Only for non-cached resources?

137 Views Asked by Evgeniy At 20 October 2024 at 03:51

This is a question about dns-prefetch and preconnect, and possible optimizations:

If a resource is cached, are dns-prefetch and preconnect still doing their job?
If not, is it possible to optimize this behavior so that dns-prefetch and preconnect do their job only for non-cached resources?

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