F5 (normal reload) will in most browsersre-request the page, and then request the images IF they have changed since last requested (if-modified-since / e-tag headers).
A click on a link to an already downloaded page that has proper headers set (no-cache etc.) will reload the page, but will probably NOT re-request the images. This will reduce the bandwidth for the image servers, but only by about a 300 bytes per request or so, assuming the webservers for the images are well-behaved. Ofcourse 300 bytes x 10,000 unnessisary requests per image is still 3Mb per image..
You can check this on firefox if you have HTTP headers plugin (not installed now, sorry).
(A click on a link to an already downloaded page that has proper headers set (no-cache etc.) will reload the page, but will probably NOT re-request the images. This will reduce the bandwidth for the image servers, but only by about a 300 bytes per request or so, assuming the webservers for the images are well-behaved. Ofcourse 300 bytes x 10,000 unnessisary requests per image is still 3Mb per image..
You can check this on firefox if you have HTTP headers plugin (not installed now, sorry).
but the hedgehog can never be buggered at all foreskin of the apocalypse,
Sun 18 Jul 2004, 23:06,
archived)