Hello,
I'd like to know when the default expiration time set on images.
Here an example:
Http request was generated on Wednesday, September 07, 2005 10:01:41
AM
I've gor the following expire times (I'm using firefox and got the
information from the page info):
for *ico is Friday, September 09, 2005 11:20:20 PM
for *.gif is Wednesday, September 07, 2005 10:01:41 AM
I have tomcat 5.0.24 on Redhat 9.
Note, I have a filter with following code in doFilter:
HttpServletResponse resp = (HttpServletResponse)response;
resp.setHeader("Cache-Control", "max-age=" + 86400);
in web.xml I have:
<filter>
<filter-name>cFilter</filter-name>
<filter-class>MyFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>cFilter</filter-name>
<url-pattern>/*gif</url-pattern>
</filter-mapping>
Also my HTML output I have the following code to prevent caching:
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache, no-store,
must-revalidate, post-check=0, pre-check=0">
<meta http-equiv="Expires" content="Tue, 01-Sep-05 12:00:00 GMT">
The question is why *ico files have expiration time in the future,
but all gif files have the expiration time of http request.
*gif files somewho are not cached and I see it in tomcat access log
files that they was requested and return status for them is 304 (not
changed)
Thanks,
Mark.
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