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Distributed Version Management for Read-Only Actions
January 1987 (vol. 13 no. 1)
pp. 55-64
W.E. Weihl, M. I. T. Laboratory for Computer Science, 545 Technology Square
Typical concurrency control protocols for atomic actions, such as two-phase locking, perform poorly for long read-only actions. We present four new concurrency control protocols that eliminate all interference between read-only actions and update actions, and thus offer significantly improved performance for read-only actions. The protocols work by maintaining multiple versions of the system state; read-only actions read old versions, while update actions manipulate the most recent version. We focus on the problem of managing the storage required for old versions in a distributed system. One of the protocols uses relatively little space, but has a potentially significant communication cost. The other protocols use more space, but may be cheaper in terms of communication.
Index Terms:
storage management, Atomic actions, concurrency, distributed systems, multiple version protocols, read-only actions
Citation:
W.E. Weihl, "Distributed Version Management for Read-Only Actions," IEEE Transactions on Software Engineering, vol. 13, no. 1, pp. 55-64, Jan. 1987, doi:10.1109/TSE.1987.232835
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