HTML and CSS Reference
In-Depth Information
The YSlow Firefox add-on that analyzes performance shows the number of HTTP
requests being made
While it is true that older browsers generally only allowed two simultaneous
HTTP connections, Firefox since version 3.0 and Internet Explorer 8 by
default allow 6 simultaneous HTTP connections. This means 6 simultaneous
connections per server. To quote Steve Souders:
It's important to understand that this is on a per server basis. Using
multiple domain names, such as 1.mydomain.com, 2.mydomain.com,
3.mydomain.com, etc., allows a web developer to achieve a multiple of
the per server connection limit. This works even if all the domain names
are CNAMEs to the same IP address.
