-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
I took a quick peek at the sampled squid log and found that CSS and JS files together are eating a lot of bandwidth; together they make up about 20% of what's served:
https://wikitech.leuksman.com/view/Squid_bandwidth_breakdown
(May be inaccurate due to coding mistakes in my counter or weird dupe caching effects.)
It should be possible to serve these files compressed through Apache with mod_gzip set up, which should squish them by probably 2/3.
- -- brion vibber (brion @ pobox.com / brion @ wikimedia.org)