Sajeeva L. Pallemulle

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Mission-critical services must be replicated to guarantee correctness and high availability in spite of arbitrary (Byzantine) faults. Traditional Byzantine fault tolerance protocols suffer from several major limitations. Some protocols do not support interoperability between replicated services. Other protocols provide poor fault isolation between services(More)
Long-running distributed applications that automate critical decision processes require Byzantine fault tolerance to ensure progress in spite of arbitrary failures. Existing replication protocols for data servers guarantee that externally requested operations execute correctly even if a bounded number of replicas fail arbitrarily. However, since these(More)
We present middleware for a server development environment that facilitates live development of SOAP and CORBA servers. As the underlying implementation platform, we use JPie, a tightly integrated programming environment for live software construction of Java applications. JPie provides dynamic classes whose signature and implementation can be modified at(More)
Modern distributed applications rely upon the functionality of services from multiple providers. Mission-critical services, possibly shared by multiple applications, must be replicated to guarantee correct execution and availability in spite of arbitrary (Byzantine) faults. Furthermore, shared services must enforce strict fault isolation policies to prevent(More)
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