Efficient encapsulation strategy of content-based XML dissemination
Zheng Li · Journal of Computer Applications · 2008
Relevant subscriptions are stored in the routing tables in a Publish/Subscription(P/S) system.The already existing optimizations focus more on single router and didn't exploit from this.In this paper,the XPath subscription aggregation techniques were used and a 2-phase encapsulation strategy was proposed to generate a header of the XML to speed up the processing and matching of the downstream router.Traditional immediate forwarding protocol can improve the dissemination by skipping the remaining processing after first match,but it can't get entire header to be used by the downstream router.An adaptive forwarding strategy was proposed to combine the immediate forwarding and delay forwarding together to give a full exploitation on the subscriptions and matching,and the whole dissemination efficiency of the P/S was consequently improved.Our experimental results demonstrate the correctness.