Re: Clustering "application scope replication"
I hope you have download and use my cluster patches for 5.5.9 http://issues.apache.org/bugzilla/show_bug.cgi?id=34389 when you implement the feature ServletContext attribute replication feature I support you. ( s. other mail) Peter Joakim Ahlén schrieb: Hi! We have a cluster of two tomcat 5.5.9-machines using session replication. However, we also have data in application scope (set with getServletContext().setAttribute(...)) which as far as i have found in the docs, is not replicated. Is there any way to accomplish this with tomcat? If not, is there any plan to develop support for it? Do other application servers have support for this? Hope you can help me. Regards Joakim - 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]
Re: Clustering "application scope replication"
Hey, with the next tomcat 5.5.10 release you can add a ClusterListener and LifecycleListener to your cluster config to realize those ServletContext attributes replication things. Look at the current cvs head and test it. Your LifecycleListener receive the manager/context un/registration event. BEFORE_MANAGERREGISTER_EVENT AFTER_MANAGERREGISTER_EVENT BEFORE_MANAGERUNREGISTER_EVENT AFTER_MANAGERUNREGISTER_EVENT ClusterListener are receive the messages. (look at ClusterSessionListener or JvmRouteSessionIDBinderListener) You must define your own ClusterMessage implementation (SessionMessageImpl or SessionIDMessage) Your code contribution is very welcome :-) Peter Will Hartung schrieb: From: "Joakim Ahlén" <[EMAIL PROTECTED]> Sent: Friday, April 22, 2005 5:54 AM Hi! We have a cluster of two tomcat 5.5.9-machines using session replication. However, we also have data in application scope (set with getServletContext().setAttribute(...)) which as far as i have found in the docs, is not replicated. You need a cluster aware caching solution. Session replication is more for failover and such. Look at something like OSCache and its ilk to get the functionality that you need. Regards, Will Hartung ([EMAIL PROTECTED]) - 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]
RE: Clustering "application scope replication"
Only objects that you put in the session would be a session attribute. Any other classes are irrelevant whether they are serializable or not. Ta Matt -Original Message- From: J. Ryan Earl [mailto:[EMAIL PROTECTED] Sent: 22 April 2005 16:24 To: Tomcat Users List; Lionel Farbos Subject: RE: Clustering "application scope replication" Let me rephrase the question, how does Tomcat determine what is a session attribute. What if there are classes that implement java.io.Serializable that have nothing to do with "session attributes?" -ryan -Original Message- From: J. Ryan Earl [mailto:[EMAIL PROTECTED] Sent: Friday, April 22, 2005 10:19 AM To: Lionel Farbos; Tomcat Users List Subject: RE: Clustering "application scope replication" I've read that document many times, and that does not answer my question. -ryan -Original Message- From: Lionel Farbos [mailto:[EMAIL PROTECTED] Sent: Friday, April 22, 2005 9:50 AM To: Tomcat Users List Cc: [EMAIL PROTECTED] Subject: Re: Clustering "application scope replication" As it is explained in the doc : "All your session attributes must implement java.io.Serializable" On Fri, 22 Apr 2005 09:44:01 -0500 "J. Ryan Earl" <[EMAIL PROTECTED]> wrote: > How does Tomcat know what to serialize? Does it just use the Reflection > package and serialize out -everything- that implements java.io.Serializable? > > -ryan > > -Original Message- > From: Lionel Farbos [mailto:[EMAIL PROTECTED] > Sent: Friday, April 22, 2005 9:11 AM > To: Tomcat Users List > Cc: [EMAIL PROTECTED] > Subject: Re: Clustering "application scope replication" > > > Hi > > For your needs, you can use > session replication > (http://jakarta.apache.org/tomcat/tomcat-5.5-doc/cluster-howto.html) > or > your own mechanisms and tables with datas in a database ... > Regards. > > On Fri, 22 Apr 2005 15:15:54 +0200 > "Joakim Ahlén" <[EMAIL PROTECTED]> wrote: > > > Ok, too bad. Is there any way of storing objects if we want them in > "cluster scope"? > > > > An ugly hack would be to use one single HttpSession with a special > session-id to store global objects, and somehow fetch objects from within > this HttpSession from inside requests that belongs to other sessions. I > can't see how this could be done though, since request.getSession() can't > fetch other sessions than its own. This would probably also have to include > some tomcat specific magic which i wouldn't want. > > > > Any help is appreciated on how to handle this problem! > > > > Thanks > > > > Joakim > > > > On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > > > The servlet spec says this data is local to a given JVM. > > > > > > I suppose a servlet engine could expand beyond the spec, but I'd be > > > surprised if Tomcat did here. > > > > > > Joakim Ahlén wrote: > > > > > > >Hi! > > > > > > > >We have a cluster of two tomcat 5.5.9-machines using session > replication. > > > >However, we also have data in application scope (set with > > > >getServletContext().setAttribute(...)) which as far as i have found in > the > > > >docs, is not replicated. > > > > > > > >Is there any way to accomplish this with tomcat? If not, is there any > plan > > > >to develop support for it? Do other application servers have support > for > > > >this? > > > > > > > >Hope you can help me. > > > > > > > >Regards > > > > > > > >Joakim > > > > > > > >- > > > >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] > > > > > > > - > > 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] > > > - > 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] - 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]
RE: Clustering "application scope replication"
Let me rephrase the question, how does Tomcat determine what is a session attribute. What if there are classes that implement java.io.Serializable that have nothing to do with "session attributes?" -ryan -Original Message- From: J. Ryan Earl [mailto:[EMAIL PROTECTED] Sent: Friday, April 22, 2005 10:19 AM To: Lionel Farbos; Tomcat Users List Subject: RE: Clustering "application scope replication" I've read that document many times, and that does not answer my question. -ryan -Original Message- From: Lionel Farbos [mailto:[EMAIL PROTECTED] Sent: Friday, April 22, 2005 9:50 AM To: Tomcat Users List Cc: [EMAIL PROTECTED] Subject: Re: Clustering "application scope replication" As it is explained in the doc : "All your session attributes must implement java.io.Serializable" On Fri, 22 Apr 2005 09:44:01 -0500 "J. Ryan Earl" <[EMAIL PROTECTED]> wrote: > How does Tomcat know what to serialize? Does it just use the Reflection > package and serialize out -everything- that implements java.io.Serializable? > > -ryan > > -Original Message- > From: Lionel Farbos [mailto:[EMAIL PROTECTED] > Sent: Friday, April 22, 2005 9:11 AM > To: Tomcat Users List > Cc: [EMAIL PROTECTED] > Subject: Re: Clustering "application scope replication" > > > Hi > > For your needs, you can use > session replication > (http://jakarta.apache.org/tomcat/tomcat-5.5-doc/cluster-howto.html) > or > your own mechanisms and tables with datas in a database ... > Regards. > > On Fri, 22 Apr 2005 15:15:54 +0200 > "Joakim Ahlén" <[EMAIL PROTECTED]> wrote: > > > Ok, too bad. Is there any way of storing objects if we want them in > "cluster scope"? > > > > An ugly hack would be to use one single HttpSession with a special > session-id to store global objects, and somehow fetch objects from within > this HttpSession from inside requests that belongs to other sessions. I > can't see how this could be done though, since request.getSession() can't > fetch other sessions than its own. This would probably also have to include > some tomcat specific magic which i wouldn't want. > > > > Any help is appreciated on how to handle this problem! > > > > Thanks > > > > Joakim > > > > On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > > > The servlet spec says this data is local to a given JVM. > > > > > > I suppose a servlet engine could expand beyond the spec, but I'd be > > > surprised if Tomcat did here. > > > > > > Joakim Ahlén wrote: > > > > > > >Hi! > > > > > > > >We have a cluster of two tomcat 5.5.9-machines using session > replication. > > > >However, we also have data in application scope (set with > > > >getServletContext().setAttribute(...)) which as far as i have found in > the > > > >docs, is not replicated. > > > > > > > >Is there any way to accomplish this with tomcat? If not, is there any > plan > > > >to develop support for it? Do other application servers have support > for > > > >this? > > > > > > > >Hope you can help me. > > > > > > > >Regards > > > > > > > >Joakim > > > > > > > >- > > > >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] > > > > > > > - > > 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] > > > - > 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] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Clustering "application scope replication"
I've read that document many times, and that does not answer my question. -ryan -Original Message- From: Lionel Farbos [mailto:[EMAIL PROTECTED] Sent: Friday, April 22, 2005 9:50 AM To: Tomcat Users List Cc: [EMAIL PROTECTED] Subject: Re: Clustering "application scope replication" As it is explained in the doc : "All your session attributes must implement java.io.Serializable" On Fri, 22 Apr 2005 09:44:01 -0500 "J. Ryan Earl" <[EMAIL PROTECTED]> wrote: > How does Tomcat know what to serialize? Does it just use the Reflection > package and serialize out -everything- that implements java.io.Serializable? > > -ryan > > -Original Message- > From: Lionel Farbos [mailto:[EMAIL PROTECTED] > Sent: Friday, April 22, 2005 9:11 AM > To: Tomcat Users List > Cc: [EMAIL PROTECTED] > Subject: Re: Clustering "application scope replication" > > > Hi > > For your needs, you can use > session replication > (http://jakarta.apache.org/tomcat/tomcat-5.5-doc/cluster-howto.html) > or > your own mechanisms and tables with datas in a database ... > Regards. > > On Fri, 22 Apr 2005 15:15:54 +0200 > "Joakim Ahlén" <[EMAIL PROTECTED]> wrote: > > > Ok, too bad. Is there any way of storing objects if we want them in > "cluster scope"? > > > > An ugly hack would be to use one single HttpSession with a special > session-id to store global objects, and somehow fetch objects from within > this HttpSession from inside requests that belongs to other sessions. I > can't see how this could be done though, since request.getSession() can't > fetch other sessions than its own. This would probably also have to include > some tomcat specific magic which i wouldn't want. > > > > Any help is appreciated on how to handle this problem! > > > > Thanks > > > > Joakim > > > > On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > > > The servlet spec says this data is local to a given JVM. > > > > > > I suppose a servlet engine could expand beyond the spec, but I'd be > > > surprised if Tomcat did here. > > > > > > Joakim Ahlén wrote: > > > > > > >Hi! > > > > > > > >We have a cluster of two tomcat 5.5.9-machines using session > replication. > > > >However, we also have data in application scope (set with > > > >getServletContext().setAttribute(...)) which as far as i have found in > the > > > >docs, is not replicated. > > > > > > > >Is there any way to accomplish this with tomcat? If not, is there any > plan > > > >to develop support for it? Do other application servers have support > for > > > >this? > > > > > > > >Hope you can help me. > > > > > > > >Regards > > > > > > > >Joakim > > > > > > > >- > > > >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] > > > > > > > - > > 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] > > > - > 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]
Re: Clustering "application scope replication"
As it is explained in the doc : "All your session attributes must implement java.io.Serializable" On Fri, 22 Apr 2005 09:44:01 -0500 "J. Ryan Earl" <[EMAIL PROTECTED]> wrote: > How does Tomcat know what to serialize? Does it just use the Reflection > package and serialize out -everything- that implements java.io.Serializable? > > -ryan > > -Original Message- > From: Lionel Farbos [mailto:[EMAIL PROTECTED] > Sent: Friday, April 22, 2005 9:11 AM > To: Tomcat Users List > Cc: [EMAIL PROTECTED] > Subject: Re: Clustering "application scope replication" > > > Hi > > For your needs, you can use > session replication > (http://jakarta.apache.org/tomcat/tomcat-5.5-doc/cluster-howto.html) > or > your own mechanisms and tables with datas in a database ... > Regards. > > On Fri, 22 Apr 2005 15:15:54 +0200 > "Joakim Ahlén" <[EMAIL PROTECTED]> wrote: > > > Ok, too bad. Is there any way of storing objects if we want them in > "cluster scope"? > > > > An ugly hack would be to use one single HttpSession with a special > session-id to store global objects, and somehow fetch objects from within > this HttpSession from inside requests that belongs to other sessions. I > can't see how this could be done though, since request.getSession() can't > fetch other sessions than its own. This would probably also have to include > some tomcat specific magic which i wouldn't want. > > > > Any help is appreciated on how to handle this problem! > > > > Thanks > > > > Joakim > > > > On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > > > The servlet spec says this data is local to a given JVM. > > > > > > I suppose a servlet engine could expand beyond the spec, but I'd be > > > surprised if Tomcat did here. > > > > > > Joakim Ahlén wrote: > > > > > > >Hi! > > > > > > > >We have a cluster of two tomcat 5.5.9-machines using session > replication. > > > >However, we also have data in application scope (set with > > > >getServletContext().setAttribute(...)) which as far as i have found in > the > > > >docs, is not replicated. > > > > > > > >Is there any way to accomplish this with tomcat? If not, is there any > plan > > > >to develop support for it? Do other application servers have support > for > > > >this? > > > > > > > >Hope you can help me. > > > > > > > >Regards > > > > > > > >Joakim > > > > > > > >- > > > >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] > > > > > > > - > > 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] > > > - > 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]
Re: Clustering "application scope replication"
> From: "J. Ryan Earl" <[EMAIL PROTECTED]> > Sent: Friday, April 22, 2005 7:44 AM > How does Tomcat know what to serialize? Does it just use the Reflection > package and serialize out -everything- that implements java.io.Serializable? When you do a "setAttribute(key, object)", it serializes the object out for replication, so, both your key and object needs to be serializable. It uses the generic Java writeObject method. This is why you need to use setAttribute to ensure your changes are replicated, and why you can not just change an object directly and expect it to be replicated. So, if you are storing, say, a long ArrayList of objects in your session (like, say, query results), you must use setAttribute(yourList) each time you make a change to anything in the list, and then it serializes the ENTIRE list for replication, not just your changes. (And thus we see some of the limits of replication, at least some of the things you need to be aware of.) Regards, Will Hartung ([EMAIL PROTECTED]) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Clustering "application scope replication"
> From: "Joakim Ahlén" <[EMAIL PROTECTED]> > Sent: Friday, April 22, 2005 5:54 AM > Hi! > > We have a cluster of two tomcat 5.5.9-machines using session > replication. However, we also have data in application scope (set with > getServletContext().setAttribute(...)) which as far as i have found in > the docs, is not replicated. You need a cluster aware caching solution. Session replication is more for failover and such. Look at something like OSCache and its ilk to get the functionality that you need. Regards, Will Hartung ([EMAIL PROTECTED]) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Clustering "application scope replication"
How does Tomcat know what to serialize? Does it just use the Reflection package and serialize out -everything- that implements java.io.Serializable? -ryan -Original Message- From: Lionel Farbos [mailto:[EMAIL PROTECTED] Sent: Friday, April 22, 2005 9:11 AM To: Tomcat Users List Cc: [EMAIL PROTECTED] Subject: Re: Clustering "application scope replication" Hi For your needs, you can use session replication (http://jakarta.apache.org/tomcat/tomcat-5.5-doc/cluster-howto.html) or your own mechanisms and tables with datas in a database ... Regards. On Fri, 22 Apr 2005 15:15:54 +0200 "Joakim Ahlén" <[EMAIL PROTECTED]> wrote: > Ok, too bad. Is there any way of storing objects if we want them in "cluster scope"? > > An ugly hack would be to use one single HttpSession with a special session-id to store global objects, and somehow fetch objects from within this HttpSession from inside requests that belongs to other sessions. I can't see how this could be done though, since request.getSession() can't fetch other sessions than its own. This would probably also have to include some tomcat specific magic which i wouldn't want. > > Any help is appreciated on how to handle this problem! > > Thanks > > Joakim > > On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > > The servlet spec says this data is local to a given JVM. > > > > I suppose a servlet engine could expand beyond the spec, but I'd be > > surprised if Tomcat did here. > > > > Joakim Ahlén wrote: > > > > >Hi! > > > > > >We have a cluster of two tomcat 5.5.9-machines using session replication. > > >However, we also have data in application scope (set with > > >getServletContext().setAttribute(...)) which as far as i have found in the > > >docs, is not replicated. > > > > > >Is there any way to accomplish this with tomcat? If not, is there any plan > > >to develop support for it? Do other application servers have support for > > >this? > > > > > >Hope you can help me. > > > > > >Regards > > > > > >Joakim > > > > > >- > > >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] > > > > - > 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] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Clustering "application scope replication"
Hi For your needs, you can use session replication (http://jakarta.apache.org/tomcat/tomcat-5.5-doc/cluster-howto.html) or your own mechanisms and tables with datas in a database ... Regards. On Fri, 22 Apr 2005 15:15:54 +0200 "Joakim Ahlén" <[EMAIL PROTECTED]> wrote: > Ok, too bad. Is there any way of storing objects if we want them in "cluster > scope"? > > An ugly hack would be to use one single HttpSession with a special session-id > to store global objects, and somehow fetch objects from within this > HttpSession from inside requests that belongs to other sessions. I can't see > how this could be done though, since request.getSession() can't fetch other > sessions than its own. This would probably also have to include some tomcat > specific magic which i wouldn't want. > > Any help is appreciated on how to handle this problem! > > Thanks > > Joakim > > On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > > The servlet spec says this data is local to a given JVM. > > > > I suppose a servlet engine could expand beyond the spec, but I'd be > > surprised if Tomcat did here. > > > > Joakim Ahlén wrote: > > > > >Hi! > > > > > >We have a cluster of two tomcat 5.5.9-machines using session replication. > > >However, we also have data in application scope (set with > > >getServletContext().setAttribute(...)) which as far as i have found in the > > >docs, is not replicated. > > > > > >Is there any way to accomplish this with tomcat? If not, is there any plan > > >to develop support for it? Do other application servers have support for > > >this? > > > > > >Hope you can help me. > > > > > >Regards > > > > > >Joakim > > > > > >- > > >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] > > > > - > 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]
Re: Clustering "application scope replication"
Ok, too bad. Is there any way of storing objects if we want them in "cluster scope"? An ugly hack would be to use one single HttpSession with a special session-id to store global objects, and somehow fetch objects from within this HttpSession from inside requests that belongs to other sessions. I can't see how this could be done though, since request.getSession() can't fetch other sessions than its own. This would probably also have to include some tomcat specific magic which i wouldn't want. Any help is appreciated on how to handle this problem! Thanks Joakim On Fri, Apr 22, 2005 at 08:07:21AM -0500, Jess Holle wrote: > The servlet spec says this data is local to a given JVM. > > I suppose a servlet engine could expand beyond the spec, but I'd be > surprised if Tomcat did here. > > Joakim Ahlén wrote: > > >Hi! > > > >We have a cluster of two tomcat 5.5.9-machines using session replication. > >However, we also have data in application scope (set with > >getServletContext().setAttribute(...)) which as far as i have found in the > >docs, is not replicated. > > > >Is there any way to accomplish this with tomcat? If not, is there any plan > >to develop support for it? Do other application servers have support for > >this? > > > >Hope you can help me. > > > >Regards > > > >Joakim > > > >- > >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] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Clustering "application scope replication"
The servlet spec says this data is local to a given JVM. I suppose a servlet engine could expand beyond the spec, but I'd be surprised if Tomcat did here. Joakim Ahlén wrote: Hi! We have a cluster of two tomcat 5.5.9-machines using session replication. However, we also have data in application scope (set with getServletContext().setAttribute(...)) which as far as i have found in the docs, is not replicated. Is there any way to accomplish this with tomcat? If not, is there any plan to develop support for it? Do other application servers have support for this? Hope you can help me. Regards Joakim - 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]
