Dynamic Service Substitution in Service-Oriented Architectures

Abstract

Abstract. In this paper we investigate the concept of designing user-centric transaction protocols towards achieving dependable coordination in AmI environments. As a proof-of-concept, we propose a protocol that takes into account the schedules of roaming users that move from one AmI environment to another, to avoid abnormal terminations of transactions when the users leave an environment for short, only to return later. We compare the proposed schedule-aware protocol against a schedule-agnostic one. Our findings show that the use of user-centric information in such situations is quite beneficial.

Robust Client/Server Shared State Interactions of Collaborative Process with System Crash and Network Failures

“…Physical redundancy-based solutions include [15], [16], [17], [18], [19]. Recovery mechanisms implemented as plugins for a WS-BPEL engine, such as [15], [16], [17], strongly depend on a specific WS-BPEL engine.…”

“…Recovery mechanisms implemented as plugins for a WS-BPEL engine, such as [15], [16], [17], strongly depend on a specific WS-BPEL engine. The approach to recovery presented in [18], [19] consists of substituting a service with another one dynamically if a synchronization error occurs. In [20], [21], [22], the QoS aspects of dynamic service substitution are considered.…”

An Illustrative Recovery Approach for Stateful Interaction Failure of Orchestrated Processes

“…Recovery mechanisms implemented as plug-ins for a WS-BPEL engine [3] strongly depend on a specific WS-BPEL engine. The approach to recovery presented in [4,5] consists of replacing a failed service with another one. Transaction-based process recovery approaches [6,7] require a central coordinator, in contrast with our approach, which is based on process transformations.…”

Robust collaborative services interactions under system crashes and network failures

“…Infrastructure layer solutions include [36,37,38,39]. Recovery mechanisms implemented as plug-ins for a WS-BPEL engine is presented in [36,37].…”

“…Recovery mechanisms implemented as plug-ins for a WS-BPEL engine is presented in [36,37]. The approach to recovery presented in [38,39] consists of substituting a service with another one dynamically if a synchronization error occurs. In [40,41,42], the QoS aspects of dynamic service substitution are considered.…”