Unraveling BitTorrent's File Unavailability: Measurements, Analysis and Solution Exploration

A Power Aware Cache and Register File Design Space Exploration

P2P Replication Revisited: Mobile Infrastructures

Traffic engineering in P2P networks deals with organizing overlay networks. The challenge of unavailability has not been mastered yet. Considering the resource allocation can gain further improvements. While adapting P2P file sharing onto mobile infrastructures, we learned that replication is a solution to both issues: availability and traffic optimization.

Redundancy Does Not Imply Fault Tolerance: Analysis of Distributed Storage Reactions to Single Errors and Corruptions

We analyze how modern distributed storage systems behave in the presence of file-system faults such as data corruption and read and write errors. We characterize eight popular distributed storage systems and uncover numerous bugs related to file-system fault tolerance. We find that modern distributed systems do not consistently use redundancy to recover from file-system faults: a single file-sy...

Scalable Distributed Data Structure By Record Grouping

LH*g is a high-availability variant of the LH* Scalable Distributed Data Structure. An LH*g file scales up with constant key search and insert performance, while surviving any single-site unavailability (failure). Highavailability is achieved through record grouping. A group is a logical structure of up to k records, where k is a file parameter. The group members always remain at different site...

A Middleware Service for Increasing Applications Integration Availability

Middleware has become an integral part of many distributed applications offering effective integration and interoperability solutions. In some situations a problem may occur where the integration of distributed information applications may be affected by scheduled unavailability of one or more of these applications. The scheduled unavailability occurs due to several reasons including applicatio...