Ok Romain. Im not sure if is tomee issue of msm issue, but i will send you a mail with the info to the tomee mailing list.
2013/10/20 Romain Manni-Bucau <[email protected]> > Hi > > Tomcat/tomee session replication; memcached and custom session manager > (hazelcast) solutions are different. > > Typically in some of them you accept SPoF, not in others. The perf are not > the same too. Finally guarantees (synchronous or not persistence) can be > different too. > > Mark info were consistent but adapted to his apps I think. The "theorical" > solution is sometimes not enough... > > Was just to give some more inputs and dont believe in IT you have a single > solution. > > PS: if tomee clustering has issues please help us working on it on trunk > and tomee list > Le 20 oct. 2013 07:30, "José Luis Cetina" <[email protected]> a écrit : > > > I have a early experience with a "mini cluster" 2 servers using tomee + > > memcached for session replication+ sticky session but using 1 only server > > for database (i mean i dont use db replication). My jsf apps (ear) are > > running in this mini cluster everithyng works fine except when i shutdown > > tomee for do a re deploy i always see an xhtml parser error. I could > never > > configure it session replication with tomcat. > > > > In your web apps just use distributable tag in web.xml and all other are > > configuration. You can use memcached to not only session replication even > > thougth for savr information of your app and with this you can share > > information between your nodes and with this you dont persist information > > that could be "transient". > > The result is incredible. > > > > As i sayed i could never configure session replication with tomcat, the > > only way i could do it is using memcached session replication. > > > > I dont know if anybody here have any experience with this. > > > > Regards Howard. > > El 19/10/2013 22:49, "Howard W. Smith, Jr." <[email protected]> > > escribió: > > > > > I had a question or two, since I have been reading "Java Summit - > > Pitfalls > > > in EE"[1] provided by Mark Struberg while having a discussion on tomee > > user > > > list. > > > > > > The following page stated the following: > > > > > > Page 134 > > > Clustering > > > > > > * We use 'asymmetric clustering' > > > * use sticky sessions > > > * backup away the session to a memcached after each > > > request > > > * do not replicate the session over to other nodes! > > > * Session-Replication always in node pairs. > > > * only restore the session from the memcached if a failover > > > happened > > > * msm can be integrated into OWB: > > > http://code.google.com/p/memcached-session-manager/ > > > > > > Since it says, 'We use asymmetric clustering' and other suggestions > were > > > made, I found it appropriate to direct my question(s) to MyFaces 'JSF' > > user > > > list and committers. > > > > > > is there some type of blog (or two or three) available that discuss how > > to > > > properly cluster a tomcat/tomee/openwebbeans/myfaces JSF web app? also, > > how > > > is the database replicated? I don't ever see database > cluster/replication > > > discussed by JSF developers; i recently had to search for database > > cluster > > > and saw 'replication', which is something i have not had to worry about > > > since my previous work involved database teams while i was doing > > > front-end/GUI software. > > > > > > now that i am doing java ee and jsf, i would love to know how to do > > > database clustering and/or replicating database while clustering JSF > > > webapp. Of course, right now, i only have one tomee which references > > > 'apache' derby (which is performing well, but I would love to get my > feet > > > wet and cluster my web app + database). i did search derby's mail list > > > archives and i learned about sequioa and HA-JDBC (High-Availability > > JDBC). > > > > > > i was hoping to get an answer from MyFaces 'JSF' > users/committers...based > > > on their experience. I think someone told me that they use mysql > > > (clustering); my preference is still 'apache' derby (smile). please > > > remember, i'm wondering if any blogs are available that discuss > > clustering > > > tomcat (preference = tomee) + JSF web app (with database) + memcached > > > session manager. > > > > > > Thomas has already started writing a blog[2] about this. I'm looking > > > forward to seeing sample config for it all (if available). :) > > > > > > [1] > > > > > > > > > http://people.apache.org/~struberg/eesummit2013/Java%20EE%20Summit%20-%20pitfalls%20in%20EE.pdf > > > > > > [2] > > > > > > > > > http://tandraschko.blogspot.com/2013/09/session-replication-clustering-failover.html > > > > > > -- ------------------------------------------------------------------- *SCJA. José Luis Cetina* -------------------------------------------------------------------
