A simulation is the popular way of comparing the performance for the proxy cache algorithms. The hit rate and the byte-hit rate can be used for the measure of the performance. However, there are several different hits and misses when we consider the cache consistency. Hence the response time and the network traffic may be better performance metrics in that case. In this paper, we propose a new ...

Reliable age models are fundamental for any palaeoclimate reconstruction. Available interpolation procedures between age control points are often inadequately reported, and very few translate age uncertainties to proxy uncertainties. Most available modeling algorithms do not allow incorporation of layer counted intervals to improve the confidence limits of the age model in question. We present ...

Reverse proxy caches are used to provide scalability and improved latency to popular sites on the Web. In this paper we provide analytical performance models for distributed reverse proxy cache architectures, and study the trade-offs between various design alternatives. Specifically, we consider static and dynamic assignment of proxy cache nodes to Web sites, with different levels of sharing of...

A latency model for proxy cache simulations is presented. It classi es the object retrievals into eight classes according to the request and the reply types, and then decomposes each class into several time components such as the connection time and the transfer time. From this modeling, we can get reasonable retrieval latencies in the simulations for various caching algorithms. Indexing terms:...

This paper presents a performance study of the state-of-the-art caching proxy called Squid. We instrumented Squid to measure per request network and disk activities and conducted a series of experiments on large Web caches. We have discovered many interesting and consistent patterns across a wide variety of environments. Our data and analysis are essential for understanding, modeling, benchmark...

Developing proxy models has a long history in our industry. Proxy models provide fast approximated solutions that substitute large numerical simulation models. They serve specific useful purposes such as assisted history matching and production/injection optimization. Most common proxy models are either reduced models or response surfaces. While the former accomplishes the run-time speed by gro...