Design of Object Caching in a CORBA OTM System.

CORBA Object Transaction Monitors (OTM) refer to a middleware technology that enable the building of transactional, objectoriented information systems running in distributed and heterogeneous environments. In this paper, we address large-scale OTM-based systems and focus attention on the important quality factors of system performance, system scalability, and system reliability. We develop an object caching strategy that employs OTM concepts such as distributed transactions and asynchronous event multicast, and show how this strategy improves an existing distributed CORBA system wrt. performance and scalability. We further describe our object caching solution as a transferable, reusable architectural abstraction, and demonstrate the application of software architectural concepts for design modeling of CORBA systems that introduce object caching.