I'm trying to estimate the performance impact of publishing several IP-addresses for a given web-site hostname.
Do browsers choose addresses in a random order?
Do they use the same address for all connections, or do they multiplex connections between different addresses at the same time for all requests?
How does this affect keep-alive and post-keep-alive requests? For example, if a user is doing a search, then I'd very much like them to use the same server from there on out, since going to page 2 of the same search query is likely to be much faster on such a hot server than on a cold one. Is there any easy way to ensure something like that, without introducing single-location-only hostnames into www use?