A Distributed Directory Service for Greenstone
نویسندگان
چکیده
Greenstone is a software for creating and maintaining distributed digital library collections. It provides a sophisticated federation mechanism for the collections. In order to support alerting notification about changes in the distributed collections, we propose a distributed directory service for the management of the distributed Greenstone installations. The Greenstone directory service (GDS) acts on top of the distributed Greenstone structure for the management of collections. This paper describes both, the initial distributed Greenstone structure and the distributed directory service.
منابع مشابه
Survey of Service Discovery Architectures for Mobile Ad hoc Networks
Efficient and timely service discovery is a crucial feature for the usability of mobile ad-hoc networks. In recent years a number of service discovery protocols have been developed and they have different view points toward the mobile ad hoc environment. These different view points made them have different service discovery architectures. In this paper we classify the existing service discovery...
متن کاملTransparent Byzantine Fault-Tolerant Directory Service using COTS components
A directory service is a critical component of any distributed computing infrastructure given that its failure may lead to the inaccessibility of many network services. In this work, we propose an architecture that allows to add Byzantine fault tolerance to existing directory services in a transparent way: neither directory services nor client applications need to be modified. Moreover, this ar...
متن کاملA Directory Service for Configuring High-Performance Distributed Computations
High-performance execution in distributed computing environments often requires careful selection and configuration not only of computers, networks, and other resources but also of the protocols and algorithms used by applications. Selection and configuration in turn require access to accurate, up-to-date information on the structure and state of available resources. Unfortunately, no standard ...
متن کاملA Comparison of Two Paradigms for Distributed Computing
This paper argues that a distributed system should support two communication paradigms: Remote Procedure Call (RPC) and group communication. The former captures point-to-point communication; the latter captures one-to-many communication. We demonstrate that group communication is an important paradigm by showing that a fault-tolerant directory service is much easier to implement with groups tha...
متن کاملDistributed Service Discovery for Heterogeneous Wireless Sensor Networks
Service discovery in heterogeneous Wireless Sensor Networks is a challenging research objective, due to the inherent limitations of sensor nodes and their extensive and dense deployment. The protocols proposed for ad hoc networks are too heavy for sensor environments. This paper presents a resourceaware solution for the service discovery problem, which exploits the heterogeneous nature of the s...
متن کامل