Thanks a lot for your response. I would go through the documentation and would try my best.
On Mon, Dec 1, 2008 at 11:02 AM, André Warnier <[EMAIL PROTECTED]> wrote: > Ok, now it is a bit clearer. > You really need to read the series of earlier messages I mentioned earlier. > The basic case is very similar to yours. > > Thus, you have an Apache front-end, and a Tomcat back-end. > The Tomcat back-end is the one that produces the answers, which are > generally large PDF documents. > You would like that the Apache front-end caches the responses from Tomcat, > so that if another request comes for the same URL within a certain > timeframe, it is Apache that will serve the PDF document from its local > cache, rather than passing the request again to Tomcat and forcing Tomcat to > produce the same big PDF document again. > > For that, you need to set up mod_cache at the Apache level. > You also need to make sure that Tomcat, when it delivers a response, > indicates in the response the timeframe for which this same response is > valid. That means that it needs to set a HTTP header like "Expires". > > Once you do that, Apache and mod_cache will take care of it nicely and > automatically, and even your Apache host's operating system disk cache will > help. > > I suggest that, for a start, you read the Apache 2.2 documentation for > "content caching" (on the main documentation page). That will tell you a > lot about such HTTP headers and how mod_cache handles them. > Then, when you have read it and understood it, try out something, and come > back here for more questions if you have any. > > > > srinivasch wrote: > >> I am sorry if my question is vague. Anyways YES you are right we already >> have >> an application which runs on tomcat and Apache web server. The PDF >> documents >> I mentioned are big and they need to be retrieved everytime from database >> whenever user requests, and we have quite a volume of users and their >> requests for these documents hence we thought of caching these frequently >> requested/downloaded pdf documents and the less frequent ones are either >> flushed out of cache and the ones which are not requested should not be >> cached. >> >> I hope I made some sense. >> >> >> >> awarnier wrote: >> >>> srinivasch wrote: >>> [...] >>> Hi. >>> >>> The problem is, your question is so vague that it is difficult to give >>> you any precise response. >>> >>> You may benefit from reading the messages of one of the previous threads >>> on this same list, the ones with the subject : >>> Clearing cache selectively on Apache + mod_cache >>> >>> That may give you some clues to start with. >>> >>> From your initial post, I kind of guess that you already have an >>> application running under Apache, and that it delivers content which are PDF >>> documents. Is that correct ? >>> If it is, then can you explain why you want to cache this content ? >>> It is not quite clear from your initial post why you would want to do >>> that, considering this seems to be dynamic content anyway. >>> >>> >>> >>> >>> --------------------------------------------------------------------- >>> The official User-To-User support forum of the Apache HTTP Server >>> Project. >>> See <URL:http://httpd.apache.org/userslist.html> for more info. >>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>> " from the digest: [EMAIL PROTECTED] >>> For additional commands, e-mail: [EMAIL PROTECTED] >>> >>> >>> >>> >> > > --------------------------------------------------------------------- > The official User-To-User support forum of the Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for more info. > To unsubscribe, e-mail: [EMAIL PROTECTED] > " from the digest: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
