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The Java 2 Platform, Enterprise Edition (J2EE) is established as the
standard platform for hosting enterprise applications written in the Java
programming language. Similar to an operating system, a J2EE server can
host multiple applications, but this is rarely seen in practice due to
limitations on scalability, weak inter-application isolation and inadequate
resource management facilities in the underlying Java platform. This leads
to a proliferation of server instances, each typically hosting a single
application, with a consequent dramatic increase in the total memory
footprint and more complex system administration. The Multi-tasking Virtual
Machine (MVM) solves this problem by providing an efficient and scalable
implementation of the isolate API for multiple, isolated tasks, enabling
the co-location of multiple server instances in a single MVM process.
Isolates also enable the restructuring of a J2EE server implementation as a
collection of isolated components, offering increased flexibility and
reliability. The resulting system is a step towards a complete and scalable
operating environment for enterprise applications.
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