Abstract

Most existing wide-area caching schemes are client initiated. Decisions on when and where to cache information are made without the benefit of the server's global knowledge of the situation. We believe that the server should play a role in making these caching decisions, and we propose geographical push-caching as a way of bringing the server back into the loop. The World Wide Web is an excellent example of a wide-area system that will benefit from geographical push-caching, and we present an architecture that allows a Web server to autonomously replicate HTML pages. 1 Introduction The World-Wide Web [1] operates for the most part as a cache-less distributed system. When two neighboring clients retrieve a document from the same server, the document is sent twice. This is inefficient, especially considering the ease with which Web browsers allow users to transfer large multimedia documents. To combat this problem, some Web browsers have begun to add local client caches. These prevent ...

Citations