Artikel
Autoren | Benjamin Wollmer, Wolfram Wingerath, Sophie Ferrlein, Fabian Panse, Felix Gessert, Norbert Ritter |
Titel | The Case for Cross-entity Delta Encoding in Web Compression (Extended) |
Publiziert in | Journal of Web Engineering |
Medium | Band 22 Nummer 01 |
Datum | 2023 |
Seiten | 131–146 |
URL | https://journals.riverpublishers.com/index.php/JWE/article/view/22327 |
Zusammenfassung | Delta encoding and shared dictionary compression (SDC) for accelerating Web content have been studied extensively in research over the last two decades, but have only found limited adoption in the industry so far; compression approaches that use a custom-tailored dictionary per website have all failed in practice due to lacking browser support and high overall complexity. General-purpose SDC approaches such as Brotli reduce complexity by shipping the same dictionary for all use cases, while most delta encoding approaches just consider similarities between versions of the same entity (but not between different entities). In this study, we investigate how much of the potential benefits of SDC and delta encoding are left on the table by these two simplifications. As our first contribution, we describe the idea of cross-entity delta encoding that uses cached assets from the immediate browser history for content encoding instead of a precompiled shared dictionary; this avoids the need to create a custom dictionary, but enables highly customized and efficient compression. Second, we present an experimental evaluation of compression efficiency to hold cross-entity delta encoding against state-of-the-art Web compression algorithms. We consciously compare algorithms some of which are not yet available in browsers to understand their potential value before investing resources to build them. Our results indicate that cross-entity delta encoding is over 50% more efficient for text-based resources than compression industry standards. We hope our findings motivate further research and development on this topic. |
Dokument | |
Andere Formate | Din 1501 |
Assoziiertes Projekt
Build Faster Apps Faster
IFB Hamburg
Dr. Felix Gessert, Prof. Dr. -Ing Norbert Ritter, Florian Bücklers, Malte Lauenroth, Hannes Kuhlmann, Prof. Dr. Wolfram Wingerath, Benjamin Wollmer
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