> On 8/8/07, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote: >> > Hi, >> > >> > i have a servlet which returns content of a video file: >> > like this: >> > http://127.0.0.1:8080/videoServlet?id=1 >> > http://127.0.0.1:8080/videoServlet?id=2 >> > >> > I hit that servlet thru squid as the proxy. >> > I do this to query if squid does cache the video file: >> > >> > ./squidclient -H "Cache-Control: only-if-cached\n" >> > "http://127.0.0.1:8080/videoServlet?id=1"; >> > >> <snip> >> > >> > Can you please tell me why squid can't cache a video file? >> >> Firstly, >> Check the webserver is providing the proper Cache-Control, and/or >> Expires >> headers that allow caching. >> > > Thank you. In the servlet, it sets the content type: > > response.setContentType("video/mp4"); > > and content length and cache control: > response.setHeader("Content-Length", Long.toString(length) ); > response.setHeader("Cache-Control", "max-age=3600"); > > Is that enough? > I think it should be enough to cache for 1 hour. You can check whether they are making it out of the servlet to the general web by testing it with the cachability engine. http://www.ircache.net/ (under Tools->Cachability checker) The ACLs I also mentioned may be important as they override the headers. > >> Secondly, >> If you are using the default squid.conf settings: >> acl QUERY urlpath_regex cgi-bin \? >> cache deny QUERY >> >> that will prevent anything with a dynamic query-string from being >> cached. >> You maybe want to use something like: >> acl Servlet urlpath_regex videoServlet\? >> cache allow Servlet >> >> ahead of that default config line. >> >> >> Amos >> >> >> >> >> > Thank you. >> > >> >> >> >
