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Software Deployment in a Dynamic Cloud
Hospital environments are currently primarily deviceoriented:
software services are installed, often manually,
on specific devices. For instance, an application to view
MRI scans may only be available on a limited number of
workstations. The medical world is changing to a serviceoriented
environment, which means that every software service
should be available on every device. However, these
devices have widely varying capabilities, ranging from
powerful workstations to PDAs, and high-bandwidth local
machines to low-bandwidth remote machines. To support
running applications in such an environment, we need to
treat the hospital machines as a cloud, where components
of the application are automatically deployed to machines
in the cloud with the required capabilities and connectivity.
In this paper, we suggest an architecture for applications in
such a cloud, in which components are reliably and automatically
deployed on the basis of a declarative model of
the application using the Nix package manager.
2010-03-21
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