DELCO, M., AND IONESCU, M. xProxy: A transparent caching and delta transfer system for web objects. http://www.cs.pdx.edu/delco/xproxy.ps.gz, May 2000. UC Berkeley class project: CS262B/CS268.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....9] Xdelta [10] and zdelta [16] are freely available. We refer to [15] for an overview of delta compression techniques and their applications. 1. 1 Delta Compression for Web Access A number of authors have proposed the use of delta compression techniques to improve the efficiency of web access [1, 4, 6, 7, 11, 12, 18]. In particular, when web pages are updated, they typically do not change by much, and thus delta compression can be used to very succinctly encode the difference between a new version of a web page and an outdated version already in the client s browser cache. Most proposals focus on encodings ....

M. Delco and M. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. May 2000. unpublished manuscript.

....patch once the server replies. In another approach, a client that already has an old version of a page in his cache sends a tag identifying this version to a proxy (or server) as part of the HTTP request; the proxy then sends the delta between the old and the current version to the client [24, 18]. This can significantly decrease the amount of data sent to the client, and is thus more appropriate for clients connected via low bandwidth links such as cellular modems. It has also been observed that web pages on the same server often have a high degree of similarity (due to common layout and ....

M. Delco and M. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. May 2000. unpublished manuscript.

....the compressed target file. Delta compression techniques have also been studied in detail in the context of the World Wide Web, where consecutive versions of a web page often differ only slightly [8, 19] and pages on the same site share a lot of common HTML structure [5] In particular, work in [2, 5, 7, 11, 18] considers possible improvements to HTTP caching based on sending a delta with respect to a previous version of the page, or another similar page, that is already located in a client or proxy cache. In this paper, we study the use of delta compression in a slightly different scenario. While in ....

M. Delco and M. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. May 2000. unpublished manuscript.

....patches, one can significantly reduce network traffic. Delta compression could also be used to improve HTTP performance. By exploiting the similarity between different pages on a given website or between the different versions of a given web page, one can reduce the latency for web access [1, 2, 3]. The zdelta tool, presented in this paper, is fairly general and could be efficiently used in any of these applications. The organization of this paper is as follows: Section 2 contains a brief survey of different delta techniques and of available delta compression tools. Section 3 provides a ....

M. Delco and M. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. May 2000. unpublished manuscript.

....the compressed target file. Delta compression techniques have also been studied in detail in the context of the World Wide Web, where consecutive versions of a web page often differ only slightly [8, 19] and pages on the same site share a lot of common HTML structure [5] In particular, work in [2, 5, 7, 11, 18] considers possible improvements to HTTP caching based on sending a delta with respect to a previous version of the page, or another similar page, that is already located in a client or proxy cache. In this paper, we study the use of delta compression in a slightly different scenario. While in ....

M. Delco and M. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. May 2000. unpublished manuscript.

....been patch content directly from the literal copy of itself. This insures that there is a delta chain connecting all versions in the archive, regardless of the cluster they reside in. A prototype system named xProxy has been implemented that uses XDFS to implement deltacompressed HTTP transport [12]. Experience with this system con rms that the extraction interface is sucient for supporting delta compressed transport. Delta compression is handled transparently, allowing a system implementor to focus directly on protocol design issues. 5 XDFS An Application Level File System This section ....

Delco, M., and Ionescu, M. xProxy: A transparent caching and delta transfer system for web objects. http://www.cs.pdx.edu/~delco/xproxy.ps.gz, May 2000. UC Berkeley class project: CS262B/CS268.

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DELCO, M., AND IONESCU, M. xProxy: A transparent caching and delta transfer system for web objects. http://www.cs.pdx.edu/delco/xproxy.ps.gz, May 2000. UC Berkeley class project: CS262B/CS268.

No context found.

Mihut D. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. Master's thesis, University of California at Berkeley, December 2000.

No context found.

M. Delco and M. Ionescu. xProxy: A transparent caching and delta transfer system for web objects. May 2000. unpublished manuscript.

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