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Nowadays, executions of composite Web services are typically conducted by heavyweight centralized engines. A centralized is a potential processing and communication bottleneck as well as a central point of failure, and its cost of deployment is usually too high for a large number of small businesses or end-users. In addition, it presents some weaknesses dealing with privacy issues. These drawbacks,...
Chord is a protocol to distribute and retrieve information at large scale. It builds a large but rigid overlay network without taking into account the social nature and the underlying topology of large platforms, made of the interconnection of many independent smaller networks. Thus, new approaches are required to build overlay networks. In this paper, we propose Babelchord, a more flexible and social...
The efficiency of service discovery is critical in the development of fully decentralized middleware intended to manage large scale computational grids. This demand influenced the design of many peer-to-peer based approaches. The ability to cope with the expressiveness of the service discovery was behind the design of a new kind of overlay structures that is based on tries, or prefix trees. Although...
Within computational grids, some services (software components, linear algebra libraries, etc.) are made available by some servers to some clients. In spite of the growing popularity of such grids, the service discovery, although efficient in many cases, does not reach several requirements. Among them, the flexibility of the discovery and its efficiency on wide-area dynamic platforms are two major...
DIET (Distributed Interactive Engineering Toolbox) is a set of hierarchical components to design network enabled server (NES) systems. In these systems, clients ask to agents (discovery and scheduling components) to find servers able to solve their problem using some performance metrics and information about the location of data already on the network. Today's NES middleware, in which agents are statically...
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