How about the flip side? Is instance data guaranteed separate for each request?
I Have some code that relies on instance data and I just had the horrible realization that I have assumed that no two concurrent requests will be talking to the same object. Thanks again, G. Wade "Shapira, Yoav" wrote: > > Howdy, > You didn't miss it. No such guarantee exists for normal servlets. See > the javax.servlet.SingleThreadModel interface for one approach to this > issue. > > However, many people will tell you to avoid SingleThreadModel for > various reasons. I tend to agree. The design and implementation of > your servlets should not depend on the synchronization of their service > methods by the container. If you have shared resources put them in > objects (often singletons) outside the servlets. > > Yoav Shapira > Millennium ChemInformatics > > >-----Original Message----- > >From: G. Wade Johnson [mailto:[EMAIL PROTECTED] > >Sent: Monday, June 09, 2003 12:08 PM > >To: Tomcat Users List > >Subject: Servlet thread safety > > > >This may be an obvious question, but is there any guarantee one way or > >the other about whether there is a separate servlet object for each > >concurrent request. > > > >In other words, is there any chance that instance data would be shared > >between two requests? If so, are we guaranteed if the instance data > will > >always be shared between two requests. > > > >I didn't see any, but I may just have missed it. > > > >G. Wade > > > >--------------------------------------------------------------------- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, e-mail: [EMAIL PROTECTED] > > This e-mail, including any attachments, is a confidential business communication, > and may contain information that is confidential, proprietary and/or privileged. > This e-mail is intended only for the individual(s) to whom it is addressed, and may > not be saved, copied, printed, disclosed or used by anyone else. If you are not > the(an) intended recipient, please immediately delete this e-mail from your computer > system and notify the sender. Thank you. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
