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In this paper we present the approach we have taken in the INSPIRE (INcreasing Security and Protection through Infrastructure REsilience) project to increase the protection of Critical Infrastructures (CIs). The core idea of the INSPIRE project is to protect Critical Infrastructures by making the underlying communication network more secure and resilient. In order to do so, we devised a routing mechanism...
Input characterization to describe the flow of incoming traffic in network systems, such as the grid and the WWW, is often performed by using Markov modulated poisson processes (MMPP). Therefore, to enact capacity planning and quality-of-service (QoS) oriented design, the model of the servers that receive the incoming traffic is often described as a MMPP/M/1 queue. In a work we have provided an approximate...
The Markov modulated Poisson process (MMPP) has been shown to well describe the flow of incoming traffic in networked systems, such as the Grid and the WWW. This makes the MMPP/M/1 queue a valuable instrument to evaluate and predict the service level of networked servers. In a recent work we have provided an approximate solution for the response time distribution of the MMPP/M/1 queue, which is based...
Response time is a key factor of any e-commerce application, and a set of solutions have been proposed to provide low response time despite network congestions or failures. Being them mostly based on caching of Web objects and replication of DBMS managed data at the edges, or at intermediate points, of the Web infrastructure, they reveal effective when handling client requests only performing read...
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