The Research Of Active Service Architecture Based On Cloud Computing

With the deepening of active service technology research, the key technology of the active service has been realized and optimized by the researchers, such as component registration and searching, program mining, Multi-Agent, Component assembling and distribution, etc. However, how to build active service system environment for these intelligent agents to cooperate and provide active service efficiently and safely can be seen as a direction that researchers strive to achieve.With the help of the characteristics of cloud computing model, which contains the flexible customization, dynamic scalability high reliability and safety, cost-effective,platform independence, large storage and computing capacity,data, software in the clouds etc, active service hierarchical structure will be conducted to form a four-layer cloud architecture, that is data layer, intelligent agent layer, communication layer and user layer. Emphasis on introducing two of the four layers, one is the intelligent agent layer, which is formed by five basic intelligent agents, that is user interface agent, service searching agent, requirement analyzing agent, component searching agent, component assembling and verification agent, and then the message protocol between agents is discussed; The other is the communication layer which implements message transfer between agents and load balancing among cluster nodes. In addition, the introduction of intelligent monitoring agent not only improves the maintainability of the system, but also provides communication layer the load balancing evidence based on real-time hardware and software information.Compared with the traditional structure of active service, the four-layer cloud architecture one hand can use clusters scalability to guarantee active service system sufficient scalability, the other hand, balance the load of intelligent agent layer, avoid losses caused by the single point of failure, guarantee the safe operation of active service system; addition,the visit to center data layer is initiated by user layer, then submit to intelligent agent layer through communication layer which unifies access to the entrance of the core data; at last, because of the introduction of communications middleware, making all parts of active service system to achieve a cross-platform communication. After the comparing the characters between cloud computing and four-layer cloud structure, it proves that this four-layer cloud structure is based on cloud computing mode. Finally, the deficiency is summarized, and the improvement direction and technical key point of this structure are proposed for further research.