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|Title:||Toward rendering-latency reduction for composable web services via priority-based object caching||Authors:||Hu, Han
|Keywords:||Engineering::Computer science and engineering||Issue Date:||2017||Source:||Hu, H., Li, Y., & Wen, Y. (2018). Toward rendering-latency reduction for composable web services via priority-based object caching. IEEE Transactions on Multimedia, 20(7), 1864-1875. doi:10.1109/TMM.2017.2779041||Journal:||IEEE Transactions on Multimedia||Abstract:||Web services serve as the cornerstone of the Internet for rendering webpages. The initial rendering latency of webpages, which depends on a subset of critical objects required by the webpage, is a key metric for web services. In this work, we propose to identify this set of critical objects systematically with the goal of caching them at a higher priority to reduce the initial rendering time. We first conduct a measurement study on a mainstream content delivery network provider, the results of which suggest that not all currently cached objects are critical and that only a small portion of the critical objects are cached. Thus, we model the critical-object aware caching scheme as a constrained optimization problem. Using the stochastic optimization framework, we decompose the problem into a set of one-shot optimization problems, which are proved to be NP-hard. We then develop two greedy algorithms with different computational complexity but the same performance bound. Finally, we integrate the resulting approximation algorithms into an online algorithm. Through trace-based simulations, we verify that our proposed algorithm can reduce service latency and network traffic by ensuring a higher cache hit ratio.||URI:||https://hdl.handle.net/10356/140197||ISSN:||1520-9210||DOI:||10.1109/TMM.2017.2779041||Rights:||© 2017 IEEE. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SCSE Journal Articles|
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