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Second USENIX Conference on Object-Oriented Technologies (COOTS), 1996
Object Caching in a CORBA Compliant System
Rammohan Kordale and M. Ahamad
Georgia Tech
M. Devarakonda
IBM T.J. Watson Research
Abstract
Distributed object systems provide the key to build large scale
applications that can execute on a range of platforms. The Common
Object Request Broker Architecture (CORBA) specification from OMG
attempts to address interoperability and heterogeneity issues that
arise in such systems. Our goal is to investigate performance issues
for distributed object systems. We claim that object caching is a must
for improved performance and scalability in distributed object
systems. However, to our knowledge, the CORBA specification does not
address object caching. The purpose of this paper is to serve as a
data point in a discussion of issues related to caching in CORBA by
describing the design and implementation of Flex, a scalable
and flexible distributed object caching system. Flex is built on top
of Fresco that uses the CORBA object model. Fresco runs on the UNIX
operating system and our implementation of Flex exploits the features
of object technology, Fresco and UNIX. This system allows us to
quantify the performance improvements for object invocations that are
made possible by caching.
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