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Locks with ordered sharing

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In databases and transaction processing the term Locks with ordered sharing comprises several variants of the two-phase locking (2PL) concurrency control protocol generated by changing the blocking semantics of locks upon conflicts. One variant is identical to strict commitment ordering (SCO). Further softening of locks eliminates thrashing.

References

D. Agrawal, A. El Abbadi, A. E. Lang: The Performance of Protocols Based on Locks with Ordered Sharing, IEEE Transactions on Knowledge and Data Engineering, Volume 6, Issue 5, October 1994, pp. 805–818, ISSN 1041-4347

Mahmoud, H. A., Arora, V., Nawab, F., Agrawal, D., & El Abbadi, A. (2014). Maat: Effective and scalable coordination of distributed transactions in the cloud. Proceedings of the VLDB Endowment, 7(5), 329-340.‏

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