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- W2030195504 abstract "A protocol for transaction processing during partition failures is presented which guarantees mutual consistency between copies of data-items after repair is completed. The protocol is “optimistic” in that transactions are processed without restrictions during failure; conflicts are then detected at repair time using a precedence graph , and are resolved by backing out transactions according to some backout strategy . The resulting database state then corresponds to a serial execution of some subset of transactions run during the failure. Results from simulation and probabilistic modeling show that the optimistic protocol is a reasonable alternative in many cases. Conditions under which the protocol performs well are noted, and suggestions are made as to how performance can be improved. In particular, a backout strategy is presented which takes into account individual transaction costs and attempts to minimize total backout cost. Although the problem of choosing transactions to minimize total backout cost is, in general, NP-complete, the backout strategy is efficient and produces very good results." @default.
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- W2030195504 date "1984-09-01" @default.
- W2030195504 modified "2023-10-18" @default.
- W2030195504 title "Optimism and consistency in partitioned distributed database systems" @default.
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- W2030195504 doi "https://doi.org/10.1145/1270.1499" @default.
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