Blocked site -

James Wilkinson fedora at aprilcottage.co.uk
Tue Oct 23 06:14:53 UTC 2012


Tim wrote:
> Proxying can only speed things up, for you, if you access something that
> someone else has already accessed before you.  *And* if that data is
> cacheable.

In general, true.

It doesn’t sound as though this service is conventional proxying,
though. It sounds like they’re dynamically rewriting web pages to reduce
the number of TCP/IP round trips. Since a round trip via a satellite
takes about half a second, there’s a lot of scope for speeding things
up.

I’ve been involved with a similar problem, with a site with lots of
small graphics hosted in the UK, and customers in Australia. Putting the
graphics on a content delivery network with Australian servers knocked
five seconds off page load time. Fedora netem was very useful in
demonstrating the effect of the ~0.3s round trip time.

James.

-- 
E-mail:     james@ | “As for Nitel, the state telephone monopoly, the less
aprilcottage.co.uk | said the better, which might well be the company’s
                   | motto.”
                   |     -- The Economist, about Nigeria


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