Fault tolerance using standard reflexive middleware mechanisms

摘要: Lightweight and adaptable applications, essential for wearable pervasive computing, are not systematically guaranteed when dealing with middleware based fault tolerance features. Some standards middlewares define heavy solutions suitable mobility. For example, Fault Tolerant CORBA (FT-CORBA) standard defines some services, like the replication manager, notifier, etc. to handle application replication. This approach is heavyweight, tolerant designed applications adaptable. paper presents how Portable Request Interceptors (PIs), which we consider as a reflexive mechanism, could supply in lightweight, transparent, way. Two distinct approaches described: integration service. In first approach, mechanisms PIs handled. Conversely, second one, act "glue" between service applications. Finally, conceptual limits, of these two approaches, their influence on deployment discussed.