Research And Implementation Of Online Examination System Base On Scale-out Model

At present, the internal trainers’size of domestic large enterprise users has been gradually improved;Occupation skill appraisal institution has been also constructing skills identification information;Based on their own business operation, domestic small and medium-sized enterprises all require the SaaS service of online test.The existing exam system can support hundreds of the concurrent online users, but the performance is not sufficient to meet the new business expansion. In order to provide more demand-driven products, rebuilding a new system with the capability to support online test for millions of users is now the research hotspot.In the Architect, if you use the original weblogiclO cluster meet the oracle RAC cluster for support, would greatly enhance customer deployment costs. If you are using open source components meet the same people and to ensure that the performance level, will result in performance and offers a double advantage for us.distributed exam system base on Horizontal Scale-out Model application applies the single group scheme (single-cluster)[4] of distribution technology. The2nd level structure is constructed by the combination of a management node and a plurality of service node. Launching user routing mode on the service node will divide the high concurrent request for20000users into the low concurrent requests for a plurality of200users, solve the high concurrent issue during the process of exam.