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HTTP/3: Performance Improvements (Part 2)

Smashing Magazine

Some examples of the latter are heavily cached websites, as well as single-page apps that periodically fetch small updates via APIs and other protocols such as DNS-over-QUIC. Let’s contemplate what would happen if A, B, and C were all render-blocking resources. This multiplexing can happen in many different ways. Large preview ).

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HTTP/3: Practical Deployment Options (Part 3)

Smashing Magazine

This approach was touted to be better for fine-grained caching because each subresource could be cached individually and the full bundle didn’t need to be redownloaded if one of them changed. Upon receipt of a valid Alt-Svc header indicating HTTP/3 support, the browser will cache this and try to set up a QUIC connection from then on.

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