Using fail-stop proxies for enhancing services isolation in the OSGi service platform
Kiev Santos da Gama, Walter Rudametkin, Didier Donsez · 2008
The OSGi Service Platform is becoming the de facto middleware for deploying modularized Java applications. It is a dynamic platform that relies on a service oriented approach for loose coupling, but the absence of separate object spaces for isolating services of different modules cannot guarantee that service providers from uninstalled modules will no longer be referenced by active code. This may lead to memory retention and inconsistencies (e.g. a stale service that provides invalid cached data) that can introduce silent faults in the system by propagating invalid information.