PROXIES INTELIGENTES: MONITORAÇÃO E ADAPTAÇÃO AUTOMÁTICAS / SMART PROXIES: AUTOMATIC MONITORING AND ADAPTATION
AUTOR(ES)
HELCIO BEZERRA DE MELLO
DATA DE PUBLICAÇÃO
2004
RESUMO
In the context of distributed applications, the need for adapting to changes in the execution environment is growing steadily. Several works deal with dynamic reconfiguration of clients and servers in response to such changes, including situations where provision of Quality of Service (QoS) is concerned. This thesis proposes the use of reflexivity in a popular middleware architecture (CORBA) and other tools to develop a smart proxy. One of its main points is usage simplicity, for the proxy requires few parameters to be instantiated and reacts to external events automatically. That behavior is achieved by combining the flexibility of the LuaOrb binding and the convenience of the LuaTrading and LuaMonitor libraries; the statement of properties relevant to the dynamic adaptation is accomplished by simple and easy-to-reuse descriptors. Finally, this work offers mechanisms to upload and download specialized stubs as to carry out more specific adaptation procedures. In order to demonstrate a possible application of the smart proxy, we present a simple game that employs it to automatically adapt to simulated resource shortage events.
ASSUNTO(S)
services quality monitoracao smart proxy qualidade do servico monitoring adaptacao automatica proxy inteligente automatic adaptation
ACESSO AO ARTIGO
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