Still problems with cache.

[JJoe]

(Apr. 14, 2010 04:17 PM)JJoe Wrote:  Browser bug? Firefox does not always send the If-Modified-Since header or use the cached image.

I added "*$SET(0=i_cache:2.)" to Exceptions-U and then loaded the same image many times, consecutively. Each time the image was downloaded.

The If-Modified-Since header for the image was sent after I did a google search or about:cache and then requested the image.

This may be the expected behaviour.
about:config shows my Firefox's "browser.cache.check_doc_frequency" set to 3.

http://kb.mozillazine.org/Browser.cache...._frequency Wrote:Possible values and their effects

0

Check for a new version of a page once per session (a session starts when the first application window opens and ends when the last application window closes).

1

Check for a new version every time a page is loaded.

2

Never check for a new version - always load the page from cache.

3

Check for a new version when the page is out of date. (Default)

The 'tricky' part is "when the page is out of date",
http://www.mozilla.org/projects/netlib/h...g-faq.html .
Note that this faq is from Oct. 9, 2002.

So to start,
type "about:config" in the url bar and go.
Eventually, you should get a screen with a "Filter" field.
Type "cache" in the "Filter" field.

Is,
"browser.cache.check_doc_frequency" set to 3.
"network.http.use-cache" set to true.
"browser.cache.disk.enable" set to true.
"browser.cache.memory.enable" set to true.