Competitive Analysis of Caching in Distributed Databases
IEEE Transactions on Parallel and Distributed Systems
Towards a theory of cost management for digital libraries and electronic commerce
ACM Transactions on Database Systems (TODS)
Adaptive, fine-grained sharing in a client-server OODBMS: a callback-based approach
ACM Transactions on Database Systems (TODS)
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Due to its simplicity and communication efficiency, many client-server object-oriented database systems are based on the basic page server architecture -- pages serve as their smallest unit of data transfer, client caching, and concurrency control. In an earlier paper, we showed how to extend this architecture to permit object-level callback locking, and we showed through simulations that significant performance gains can be expected. In the current paper, we report on our experiences from implementing this approach in the context of the SHORE system, which supports a generalized peer-servers architecture. In addition to discussing some of the stickier implementation details, we also explain how our callback algorithm was extended to support the hierarchical locking approach used in SHORE. Finally, we present performance measurements obtained by running SHORE on an IBM SP2 machine.