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Low cost management of replicated data in fault-tolerant distributed systems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Joseph, Thomas A. Birman, Kenneth P. |
| Copyright Year | 1990 |
| Description | Many distributed systems replicate data for fault tolerance or availability. In such systems, a logical update on a data item results in a physical update on a number of copies. The synchronization and communication required to keep the copies of replicated data consistent introduce a delay when operations are performed. A technique is described that relaxes the usual degree of synchronization, permitting replicated data items to be updated concurrently with other operations, while at the same time ensuring that correctness is not violated. The additional concurrency thus obtained results in better response time when performing operations on replicated data. How this technique performs in conjunction with a roll-back and a roll-forward failure recovery mechanism is also discussed. |
| File Size | 1062638 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900020660 |
| Archival Resource Key | ark:/13960/t7bs3ps9t |
| Language | English |
| Publisher Date | 1990-01-01 |
| Access Restriction | Open |
| Subject Keyword | System Failures Distributed Processing Fault Tolerance Concurrent Processing Data Management Computer Systems Design Computer Systems Performance Synchronism Data Retrieval On-line Systems Computer Networks Operating Systems Computers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
