[hxn]

    With http2, relevant javascript files will be
    increasingly hosted on the same domain

Why is that?

[MatthewMcDonald]

There's a limit on the number of simultaneous requests per domain with http1, which will not be present in http2 [0]. This limit meant that for best performance, static files should be served from multiple (sub)domains.

[0] https://mattwilcox.net/web-development/http2-for-front-end-w...

[Conlectus]

The way this is phrased sounds backwards to what you actually mean.

HTTP/2.0 supports _single connection multiplexing_, which means that domain sharding (splitting into different domains) is a _bad practice_.

[juliangregorian]

You're both right. There's two separate (but related issues) here.