Load-modifiable content-based Publish/Subscribe Architecture over structured peer-to-peer networks

Three key performance indexes of distributed publish/subscribe systems are latency, load balance and flow cost. In this paper, we propose Adaptable Publish/Subscribe Architecture (APSA) for content-based publish/subscribe system, and it is built on structured P2P networks. In APSA, We use subscriptions covering, merging and binding, and two-layer delivering tree strategies to balance the load and reduce latency, so as to get a good performance. The experimental results show that APSA can provide modifiable load balance with relative low latency and low network flow cost which fit for publish/subscribe systems.