尤其在集群环境中，应用服务器要支持EJB的负载平衡和失效恢复。
Particularly, clustered application servers need to support the load balancing and fault tolerance of EJB.
这一模型的设计重点在于其独特的网络叠加树生成机制及节点失效恢复机制。
The most important part of our work is to propose the network building and failure recovery mechanism .
它提供了一个基于数天内的平均失效时间信息和数小时内的失效恢复信息的可用性特性。
This provides an availability figure based on mean time to failure information in days, and mean time to recover information in hours.
协议基本操作包括：节点加入、节点退出、节点失效恢复、节点能力度汇聚和节点关系更新。
The basic operations of the protocol include: node joining, node exit, node failure restore, and node capability aggregation.
应用支撑平台的底层基础是J2EE中间件服务器，支持集群、失效恢复、负载均衡、数据缓存等高可用性机制；
The foundation base of the application supporting system is the J2EE inter-server, the platform supports the high reliability of cluster, fail over, load balancing and data buffer;
另外，课题设计了一种驱动程序失效恢复算法来提高驱动程序失效恢复效率，并使用两个失效注入实验证明了它的意义。
In addition, this paper designs an algorithm for improving efficiency of fault recovery and verifies its significance by two fault injection experiments.
另外，课题设计了一种驱动程序失效恢复算法来提高驱动程序失效恢复效率，并使用两个失效注入实验证明了它的意义。
In addition, this paper designs an algorithm for improving efficiency of fault recovery and verifies its significance by two fault injection experiments.
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