Leases: an efficient fault-tolerant mechanism for distributed file cache consistency
SOSP '89 Proceedings of the twelfth ACM symposium on Operating systems principles
Future Generation Computer Systems
A cost-comparison approach for adaptive distributed shared memory
ICS '96 Proceedings of the 10th international conference on Supercomputing
An Active Replication Scheme for Mobile Data Management
DASFAA '99 Proceedings of the Sixth International Conference on Database Systems for Advanced Applications
Scalable Consistency Maintenance in Content Distribution Networks Using Cooperative Leases
IEEE Transactions on Knowledge and Data Engineering
Atomic writes for data integrity and consistency in shared storage devices for clusters
Future Generation Computer Systems - Special issue: Advanced services for clusters and internet computing
An analysis of update ordering in distributed replication systems
Future Generation Computer Systems - Special issue: Advanced services for clusters and internet computing
Replication for web hosting systems
ACM Computing Surveys (CSUR)
Replication for web hosting systems
ACM Computing Surveys (CSUR)
Dynamic data replication and consistency in mobile environments
DSM '05 Proceedings of the 2nd international doctoral symposium on Middleware
A Consistency Maintenance Approach in Replicated Services
CIT '06 Proceedings of the Sixth IEEE International Conference on Computer and Information Technology
World-wide web cache consistency
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
Maintaining Strong Cache Consistency for the Domain Name System
IEEE Transactions on Knowledge and Data Engineering
Maintaining coherency of dynamic data in cooperating repositories
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
World Wide Web caching: trends and techniques
IEEE Communications Magazine
Relaxation of ACID properties in AuTrA, The adaptive user-defined transaction relaxing approach
Future Generation Computer Systems
Performance-Enhanced Caching Scheme for Web Clusters for Dynamic Content
International Journal of Business Data Communications and Networking
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There are many methods to maintain consistency in the distributed computing environment. Ideally, efficient schemes for maintaining consistency should take into account the following factors: lease duration of replicated data, data access pattern and system parameters. One method used to supply strong consistency in the web environment is the lease method. During the proxy's lease time from a web server, the web server can notify the modification to the proxy by invalidation or update. In this paper, we analyze lease protocol performance by the varying update/invalidation scheme, lease duration and read rates. By using these analyses, we can choose the adaptive lease time and proper protocol (invalidation or update scheme of the modification for each proxy in the web environment). As the number of proxies for web caching increases exponentially, a more efficient method for maintaining consistency needs to be designed. We also present three-tier hierarchies on which each group and node independently and adaptively choose the proper lease time and protocol for each proxy cache. These classifications of the scheme make proxy caching adaptive to client access pattern and system parameters.