On 3/15/07, Dan Jacobson jidanni@jidanni.org wrote:
Say, do the boilerplate images always present on every Mediawiki page have enough Expires and/or etc. headers to keep them cached around the network for a long time? (Can't tell here offline with images turned off anyway). Seems like optimizing that would need messing with the apache etc. configuration as it is beyond what one can do with php as they are <img src=...>.
WMF images are generally served with instructions to cache for 30 days, IIRC. Nevertheless, a fairly large percentage of hits are cache misses for the images, is my impression. Cache-Control can specify maximum cache ages, but not minimum.