I'm not that familiar with CMP and JBoss yet. Would that mean commit option B for the row-locking?
>From what I can learn on the web it seems that a read-mostly pattern is where you have 2 copies of a bean, one read-only and the other read-write. It seems that you need to write at a specific interval. Is this possible? On Tue, Nov 18, 2003 at 10:42:37PM +0800, Alexey Loubyansky wrote: > In this case, to ensure the consistency of the data you have to lock > the > data in the database. It means using row-locking, i.e SELECT ... FOR > UPDATE. To solve the scalability problem, you could consider a > read-mostly pattern with 'Standard CMP 2.x EntityBean with cache > invalidation' container. > > Alwyn Schoeman wrote: > > > Hi, > > > > My application environment is the following: > > 1) The same application is duplicated on multiple servers. > > 2) These servers are loadbalanced by hardware in front of the > servers which > > basically round-robins between the servers. > > 3) All client requests via http are session- and stateless. > > 4) Each server has the same CMP2 beans as all the servers, > referencing data from > > a single shared database. > > 5) The number of servers can be large. > > 6) No JBoss clustering is used, due to lack of knowledge and perhaps > 5 above. > > 7) Some CMP2 beans will write/change data to the database. > > 8) The main table to which most other beans relate will have about > 10-20 Million > > records. > > > > My questions are the following: > > > > How do > > 1) ensure that data across all servers is correct and valid. > > 2) ensure that CMP2 works fast and efficient taking 1) into account. > > > > Can you do 1) only by choosing a commit option that reads from > database every > > time. If so, will performance suck? > > > > Also, some people reckon that a way to get rid of the CMP2 problem > is by using > > something like Toplink from Oracle. I guess it is similar to > Hibernate. > > > > I do not see how this will change anything. Any comments? > > > > Kind regards, > > > > ------------------------------------------------------- > This SF. Net email is sponsored by: GoToMyPC > GoToMyPC is the fast, easy and secure way to access your computer from > any Web browser or wireless device. Click here to Try it Free! > [1]https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp > .tmpl > _______________________________________________ > JBoss-user mailing list > [EMAIL PROTECTED] > [2]https://lists.sourceforge.net/lists/listinfo/jboss-user > > References > > 1. https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl > 2. https://lists.sourceforge.net/lists/listinfo/jboss-user -- Alwyn Schoeman SMART Money Inc. If you're a SMARTY and you're using the better DNS connections, you can access my homepage at http://nevyn.smarties.com.ph/Members/alwyn. The other unlucky ones: http://10.126.68.24/myplone ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
