A Pattern Language for Adaptive Distributed Systems
نویسندگان
چکیده
Modern computing environments are characterized by a high level of dynamism. Two major kinds of dynamic changes occur frequently. The first refers to structural changes such as hardware and software upgrades, protocol and API updates, and operating system evolution. The second refers to dynamic changes in the availability of memory, CPU, network bandwidth and, in mobile systems, connectivity and location. Drastic changes may occur in a few seconds, impacting the performance of user applications profoundly. Among existing production software systems few offer support for managing, adapting, and reacting to these changes; most of the times, all the work is left to users and system administrators who must take care of them manually.
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