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Replication improves the performance and availability of sharing information in a largescale network. Classical, pessimistic replication incurs network access before any access, in order to avoid conflicts and resulting stale reads and lost writes. Pessimistic protocols assume some central locking site or necessitate distributed consensus. The protocols are fragile in the presence of network failures,...
We present a new replication algorithm that supports repli- cation of a large number of objects on a diverse set of nodes. The algo- rithm allows replica sets to be changed dynamically on a per-object basis. It tolerates most types of failures, including multiple node failures, net- work partitions, and sudden node retirements. These advantages make the algorithm particularly attractive in large cluster-based...
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