一种基于服务自适应的系统可生存性策略

A SYSTEM SURVIVABILITY POLICY BASED ON SERVICE ADAPTATION

网络系统的可生存性已经成为一个热门的研究主题,该研究课题的思想是要保障系统关键服务的有效性。提出一种服务自适应策略。自适应策略受生物免疫原理的启发,通过控制网络服务的复制、迁移和消亡来提高系统的可生存性。模拟结果显示网络服务在动态负载和发生故障的情况下具有扩展性和鲁棒性,反映了系统具有一定的适应能力和生存能力,说明该策略具有可行性和有效性。

Survivability of network system has become a hot research topic, and the core idea of the survivability research is to provide guaranteed effectiveness to critical services of system. Therefore, this paper proposes an adaptation policy of network service for solving this problem. Inspired by biological immune principle, adaptation policy enhances system＇ s survivability by controlling the network services＇ be- haviours such as clone, death, migration and so on. Simulation results demonstrate that the network services have scalability and robustness in situation of dynamic load and failure, and indicate that the network system has adaptability and survivability to some extent and also show that the policy is feasible and effective.