dbjapanの皆様、 以下の講演を予定しております。奮ってご参加ください。 日時 １０月２１日 午後６時ー 場所 東京大学生産技術研究所 E棟５階 会議室C（Ew-503) Title: Proxy-Based Acceleration of Dynamically Generated Content on the World Wide Web: An Approach and Implementation Speaker: Prof. Anindya Datta 参加費 無料 参加ご希望の方は、ＳＩＧＭＯＤホームページにて （ http://www.sigmodj.is.uec.ac.jp/） 会員登録の後（会費無料、すでに登録されている方は結構です）、 sigmodj_021021@tkl.iis.u-tokyo.ac.jp 宛に添付の参加申込書をお送り下さい。 喜連川(東大、SIGMOD-J Chair) 連絡(問合せ）先 ACM SIGMOD日本支部 sigmodj_lecture@tkl.iis.u-tokyo.ac.jp http://www.sigmodj.is.uec.ac.jp/ ----------------------------------------------------------------- To: sigmodj_021021@tkl.iis.u-tokyo.ac.jp ACM SIGMOD日本支部 講演会 参加申し込み １０月２１日の講演会に参加 ・名前 ・ご所属 ------------------------------------------------------------------ Speaker: Prof. Anindya Datta Title: Proxy-Based Acceleration of Dynamically Generated Content on the World Wide Web: An Approach and Implementation Abstract: As Internet traffic continues to grow and web sites are becoming increasingly complex, performance and scalability are major issues for web sites. Web sites are increasingly relying on dynamic content generation applications to provide web site visitors with dynamic, interactive, and personalized experiences. However, dynamic content generation comes with a cost -- each request requires computation as well as communication across multiple components. To address these issues, various dynamic content caching approaches have been proposed. Proxy-based caching approaches store content at various locations outside the site infrastructure and can improve web site performance by reducing content generation delays, firewall processing delays, and bandwidth required to transmit content from the back end applications to the proxy cache. However, existing proxy-based caching approaches either (a) cache at the page level, which does not guarantee that correct pages are served and provides very limited reusability, or (b) cache at the fragment level, which requires the use of pre-defined page layouts. To address these issues, several back end caching approaches have been proposed, including query result caching and fragment level caching. While back end approaches guarantee the correctness of results and offer the advantages of fine-grained caching, they do not address firewall delays nor due they impact bandwidth requirements. In this research, we present an approach and an implementation of a dynamic proxy caching technique which combines the benefits of both proxy-based and back end caching approaches, yet does not suffer from the above-mentioned limitations. Our dynamic proxy caching technique allows granular, proxy-based caching where both the content and layout can be dynamic. We present the results of an analysis characterizing the performance of our proposed technique, which indicates that our approach is capable of providing significant reductions in bandwidth. We have also deployed our proposed dynamic proxy caching technique at a major financial institution. The results of this implementation indicate that our technique is capable of significant reductions in both bandwidth and response times in real-world dynamic Web applications.