The HTTP-headers of the Dashboard page and Browse pages differ, causing some proxy servers (e.g. Microsoft ISA server) to succesfully cache/update the Dashboard page, but to fail caching the browse-pages correctly (see JRA-4019 ).

Here are the liveheaders of the Dashboard page
(generated using Mozilla/Liveheaders):

http://internal:8080/secure/Dashboard.jspa

GET /secure/Dashboard.jspa HTTP/1.1
Host: internal:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040626 Firefox/0.9.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,/;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://internal:8080/secure/BrowseProject.jspa
Cookie: seraph.os.cookie=foo.bar; JSESSIONID=foo.bar

HTTP/1.1 200 OK
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache, no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT, -1
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Date: Mon, 26 Jul 2004 11:20:13 GMT
Server: Apache-Coyote/1.1

--------------------------------

Here are the headers for a Browse page

http://internal:8080/browse/ISSUE-1

GET /browse/ISSUE-1 HTTP/1.1
Host: internal:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040626 Firefox/0.9.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,/;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://internal:8080/secure/Dashboard.jspa
Cookie: seraph.os.cookie=foo.bar; JSESSIONID=foo.bar

HTTP/1.1 200 OK
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Date: Mon, 26 Jul 2004 11:20:49 GMT
Server: Apache-Coyote/1.1
Pragma: no-cache
Expires: -1

--------------------------------------

Suggested improvement:

a) make the caching HTTP-headers in all Jira pages work the same

b) add "Cache-Control: no-cache, no-store, must-revalidate" and
"Pragma: no-cache" to response headers in Browse pages (and possible others)

c) Why does the Dashboard page gives a response header of
"Pragma: no-cache, no-cache". I assume this is a bug, and it should be "Pragma: no-cache".

d) Use "Expires: Thu, 01 Jan 1970 00:00:00 GMT, -1" instead of
"Expires: -1" header in Browse pages.

e) Follow the HTTP/1.1 standards http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
and make sure it works proxy servers such as Apache and Microsoft ISA server.