The Case for Non-transparent Replication: Examples from Bayou

Applications that rely on replicated data have different requirements for how their data is managed. For example, some applications may require that updates propagate amongst replicas with tight time constraints, whereas other applications may be able to tolerate longer propagation delays. Some applications only require replicas to interoperate with a few centralized replicas for data synchronization purposes, while other applications need communication between arbitrary replicas. Similarly, the type of update conflicts caused by data replication varies amongst applications, and the mechanisms to resolve them differ as well. The challenge faced by designers of replicated systems is providing the right interface to support cooperation between applications and their data managers. Application programmers do not want to be overburdened by having to deal with issues like propagating updates to replicas and ensuring eventual consistency, but at the same time they want the ability to set u...

• Type: Journal
• Year: 1998
• Where: DEBU
• Authors: Douglas B. Terry, Karin Petersen, Mike Spreitzer, Marvin Theimer
• Keywords: DEBU 1998, Longer Propagation Delays, Replicas, Tight Time Constraints