OK this turns out to be a pretty simple one to solve and I'll update
the Wiki accordingly in a second.
The problem is not with Apache or Hudson, it's specifically with
Tomcat when it is secured. In this circumstance Tomcat explicitly
adds a cache-control: no-cache to all the responses and although
Hudson has set the expires time for a year this is then suppressed /
ignored because of this.
The solution is a minor change to the Tomcat server.xml which will
switch off this behavior and therefore allow Hudson's own cache
management which is handled by the hudson.ResponseHeaderFilter.
Here's the change (the valve) which I've implemented at
ci.hudson-ci.org:
<Context path=""
docBase="${catalina.home}/hudson"
reloadable="false"
useHttpOnly="true">
<Valve className="org.apache.catalina.authenticator.NonLoginAuthenticator"
disableProxyCaching="false" />
</Context>
Duncan
On 06/03/2012 19:14, Manfred Moser wrote:
Typically
you would set it up as a reverse proxy and it should cache static
resource transparently.
I would have thought that for a bigger Hudson instance front with
Apache or nginx or so is a best practice anyway.
manfred
On 12-03-06 11:11 AM, Winston Prakash wrote:
Both ci.hudson-ci.org and
hudson.eclipse.org are issuing the static resources for every
request (200 OK , instead of 304 Not Modified for the refresh) .
Interestingly at both places Hudson is fronted by Apache proxy.
Not sure if some kind of settings needed in Apache to set the
caching correctly.
- Winston
On 3/5/12 10:50 AM, Henrik Lynggaard Hansen wrote:
HI
As talked about in todays call, I think that hudson is
correctly
setting the expires for static resources. In order to verify
this I
cleared my cache and enabled access logging on my desktop
hudson. All
tests done with firefox 3.6.16
For a static resource on first request I get
Request:
(Request-Line) GET
/static/9562870d/images/16x16/health-80plus.gif HTTP/1.1
Host localhost:7070
User-Agent Mozilla/5.0 (X11; U; Linux x86_64; en-US;
rv:1.9.2.16)
Gecko/20110322 Fedora/3.6.16-1.fc14 Firefox/3.6.16
Accept image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language en,da;q=0.5
Accept-Encoding gzip,deflate
Accept-Charset UTF-8,*
Keep-Alive 115
Connection keep-alive
Referer http://localhost:7070/
Cookie
nailsSessionId=127.0.0.1/nails/1308561967/1308561635-checksum//0;
ACEGI_SECURITY_HASHED_REMEMBER_ME_COOKIE=aGVucmlrOjEzMzE4MTg1MzIxNTc6N2E2NGMyYThhNmFiYTkxNzE1MTA5N2U3ZWNiZjYwOTE=;
screenResolution=1920x1095
Response:
(Status-Line) HTTP/1.1 200 OK
Server Winstone Servlet Engine v0.9.10
Last-Modified Thu, 01 Mar 2012 09:45:01 GMT
Expires Tue, 05 Mar 2013 18:33:26
GMT<<<<<<<<<<<< Note the
expires header
Accept-Ranges bytes
Content-Type image/gif
Content-Length 553
Connection Keep-Alive
Date Mon, 05 Mar 2012 18:33:26 GMT
X-Powered-By Servlet/2.5 (Winstone/0.9.10)
When I then try to reload the page by navigating the url again
I get
(and no hit in the hudson access log)
00:01:50.135 0.637 642 (7577) GET (Cache)
application/_javascript_
http://localhost:7070/static/9562870d/scripts/yui/button/button-min.js
But if I press the refresh button I get a hit on hudson (but I
am
asking the browser to revalidate the page)
Request
(Request-Line) GET
/static/9562870d/scripts/hudson-behavior.js HTTP/1.1
Host localhost:7070
User-Agent Mozilla/5.0 (X11; U; Linux x86_64; en-US;
rv:1.9.2.16)
Gecko/20110322 Fedora/3.6.16-1.fc14 Firefox/3.6.16
Accept */*
Accept-Language en,da;q=0.5
Accept-Encoding gzip,deflate
Accept-Charset UTF-8,*
Keep-Alive 115
Connection keep-alive
Referer http://localhost:7070/
Cookie
nailsSessionId=127.0.0.1/nails/1308561967/1308561635-checksum//0;
ACEGI_SECURITY_HASHED_REMEMBER_ME_COOKIE=aGVucmlrOjEzMzE4MTg1MzIxNTc6N2E2NGMyYThhNmFiYTkxNzE1MTA5N2U3ZWNiZjYwOTE=;
screenResolution=1920x1095;
JSESSIONID=385adea4d8ebfcae10629196af08a6d0
If-Modified-Since Thu, 01 Mar 2012 09:45:01 GMT
Cache-Control max-age=0
Response:
(Status-Line) HTTP/1.1 304 Not Modified
Server Winstone Servlet Engine v0.9.10
Content-Length 0
Connection Keep-Alive
Content-Type text/html;charset=ISO-8859-1
Date Mon, 05 Mar 2012 18:44:58 GMT
X-Powered-By Servlet/2.5 (Winstone/0.9.10)
Best regards
Henrik
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