Hi everyone, I'd like to announce two new things I've been working on that may be of general interest to the list. First, an ISP review system. In the model of Amazon, you can now tell the world how you feel about your ISP. Have they served you? Or have they screwed you? Let people know! The content is under construction, but it should be usable. Email me any feedback. http://216.127.78.46/isps/servlet/ISPViewAll Just beware that this is running on a staging machine, not the official production Servlets.com site, so if there's a problem, email me, but don't necessarily expect a prompt answer. :-) For the record, it's running Apache 1.3.9 with Tomcat 3.0, and all the pages are built using WebMacro (www.webmacro.org). Second, I've made an addition to com.oreilly.servlet. There's a new class called CacheHttpServlet. According to the Javadocs, this is: A superclass for HTTP servlets that wish to have their output cached and automatically resent as appropriate according to the servlet's getLastModified() method. To take advantage of this class, a servlet must: Extend CacheHttpServlet instead of HttpServlet Implement a getLastModified(HttpServletRequest) method as usual This class uses the value returned by getLastModified() to manage an internal cache of the servlet's output. Before handling a request, this class checks the value of getLastModified(), and if the output cache is at least as current as the servlet's last modified time, the cached output is sent without calling the servlet's doGet() method. In order to be safe, if this class detects that the servlet's query string, extra path info, or servlet path has changed, the cache is invalidated and recreated. However, this class does not invalidate the cache based on differing request headers or cookies; for servlets that vary their output based on these values (i.e. a session tracking servlet) this class should probably not be used. No caching is performed for POST requests. CacheHttpServletResponse and CacheServletOutputStream are helper classes to this class and should not be used directly. This class has been built against Servlet API 2.2. Using it with previous Servlet API versions should work; using it with future API versions likely won't work. This class is ideal for servlets that generate dynamic content that changes rarely (for example, ISPViewAll). By extending from this class, you get automatic output caching. You can use getLastModified() to control when the cache is invalidated. With normal use of getLastModified() there's no server-side caching. You can get the download the com.oreilly.servlet package at http://www.servlets.com/resources/com.oreilly.servlet/ Beware, it has not been widely tested yet. Please if you find anything not working right, let me know. It has some debug System.out.println() calls to let you know what it's doing with the cache. If you have problems installing it, you should mail the list since someone there can probably answer you faster than I will. I've got more servlets to write! :-) -jh- ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
