Eliminating Roundtrips with Preconnect

Avatar of Robin Rendle
Robin Rendle on

UGURUS offers elite coaching and mentorship for agency owners looking to grow. Start with the free Agency Accelerator today.

Last week we wrote about prefetching and preloading but forgot to mention preconnect. Thankfully however, Ilya Grigorik has written a great post about this elusive resource hint:

Preconnect is an important tool in your optimization toolbox. As above examples illustrate, it can eliminate many costly roundtrips from your request path — in some cases reducing the request latency by hundreds and even thousands of milliseconds. That said, use it wisely: each open socket incurs costs both on the client and server, and you want to avoid opening sockets that might go unused. As always, apply, measure real-world impact, and iterate to get the best performance mileage from this feature.

Direct Link →