Both Chrome and Firefox limited the number of connections to a server to six (6), if memory serves. I'm not certain if those limits have changed or if the number is different based on HTTP 1.1 versus HTTP 2.
The limit is per _hostname_ not per _server_ (unless things have changed in the last 10 years).
This is why you'll see assets1.foo.com, assets2.foo.com, etc. all pointing to the same IP address(es). Server-side code picks one based on a modulus of a hash of the filename or something similar when rendering the HTML to get additional pipelines in the user's browser. Not sure how or if this is done in SPA.
This is why you'll see assets1.foo.com, assets2.foo.com, etc. all pointing to the same IP address(es). Server-side code picks one based on a modulus of a hash of the filename or something similar when rendering the HTML to get additional pipelines in the user's browser. Not sure how or if this is done in SPA.