{"id":759,"date":"2022-12-07T20:08:10","date_gmt":"2022-12-07T20:08:10","guid":{"rendered":"https:\/\/groups.cs.umass.edu\/ramesh\/?page_id=759"},"modified":"2022-12-28T05:43:17","modified_gmt":"2022-12-28T05:43:17","slug":"real-world-systems","status":"publish","type":"page","link":"https:\/\/groups.cs.umass.edu\/ramesh\/real-world-systems\/","title":{"rendered":"Real-World Systems"},"content":{"rendered":"\n

Content Delivery and Edge Computing Systems<\/h2>\n

Our work helped create of the world’s first major content delivery networks (CDNs) and edge computing services. These select papers describe real-life\u00a0production systems that currently deliver a significant fraction of the web, videos, and applications to billions of clients world-wide.<\/p>\n

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2020<\/h3>\r\n <\/td>\r\n <\/tr>

Schomp, Kyle; Bhardwaj, Onkar; Kurdoglu, Eymen; Muhaimen, Mashooq; Sitaraman, Ramesh K.<\/p>

Akamai DNS: Providing Authoritative Answers to the World\u2019s Queries<\/a> Proceedings Article<\/span> <\/p>

In: <\/span>Proceedings of the ACM SIGCOMM Conference, <\/span>2020<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@inproceedings{SchompBKMS2020,
\r\ntitle = {Akamai DNS: Providing Authoritative Answers to the World\u2019s Queries},
\r\nauthor = {Kyle Schomp and Onkar Bhardwaj and Eymen Kurdoglu and Mashooq Muhaimen and Ramesh K. Sitaraman},
\r\nurl = {https:\/\/groups.cs.umass.edu\/ramesh\/wp-content\/uploads\/sites\/3\/2020\/07\/sigcomm2020-final289.pdf},
\r\nyear  = {2020},
\r\ndate = {2020-08-10},
\r\nbooktitle = {Proceedings of the ACM SIGCOMM Conference},
\r\nabstract = {We present Akamai DNS, one of the largest authoritative DNS infrastructures in the world, that supports the Akamai content de- livery network (CDN) as well as authoritative DNS hosting and DNS-based load balancing services for many enterprises. As the starting point for a significant fraction of the world\u2019s Internet in- teractions, Akamai DNS serves millions of queries each second and must be resilient to avoid disrupting myriad online services, scalable to meet the ever increasing volume of DNS queries, per- formant to prevent user-perceivable performance degradation, and reconfigurable to react quickly to shifts in network conditions and attacks. We outline the design principles and architecture used to achieve Akamai DNS\u2019s goals, relating the design choices to the system workload and quantifying the effectiveness of those designs. Further, we convey insights from operating the production system that are of value to the broader research community.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {inproceedings}
\r\n}
\r\n<\/pre><\/div>
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Sundarrajan, Aditya; Kasbekar, Mangesh; Sitaraman, Ramesh K; Shukla, Samta<\/p>

Midgress-aware traffic provisioning for content delivery<\/a> Proceedings Article<\/span> <\/p>

In: <\/span>USENIX Annual Technical Conference (USENIX ATC 20), <\/span>pp. 543\u2013557, <\/span>USENIX Association, <\/span>2020<\/span>, ISBN: 978-1-939133-14-4<\/span>.<\/p>

Abstract<\/a><\/span> | Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@inproceedings{254434,
\r\ntitle = {Midgress-aware traffic provisioning for content delivery},
\r\nauthor = {Aditya Sundarrajan and Mangesh Kasbekar and Ramesh K Sitaraman and Samta Shukla},
\r\nurl = {https:\/\/groups.cs.umass.edu\/ramesh\/wp-content\/uploads\/sites\/3\/2020\/07\/atc20-sundarrajan.pdf
\r\nhttps:\/\/www.usenix.org\/conference\/atc20\/presentation\/sundarrajan},
\r\nisbn = {978-1-939133-14-4},
\r\nyear  = {2020},
\r\ndate = {2020-07-15},
\r\nbooktitle = {USENIX Annual Technical Conference (USENIX ATC 20)},
\r\npages = {543--557},
\r\npublisher = {USENIX Association},
\r\nabstract = {Content delivery networks (CDNs) cache and deliver hundreds of trillions of user requests each day from hundreds of thousands of servers around the world. The traffic served by CDNs can be partitioned into hundreds of traffic classes, each with different user access patterns, popularity distributions, object sizes, and performance requirements. Midgress is the cache miss traffic between the CDN's servers and the content provider origins. A major goal of a CDN is to minimize its midgress, since higher midgress translates to higher bandwidth costs and increased user-perceived latency. We propose algorithms that provision traffic classes to servers such that midgress is minimized. Using extensive traces from Akamai's CDN, we show that our midgress-aware traffic provisioning schemes can reduce midgress by nearly 20% in comparison with the midgress-unaware schemes currently in use. We also propose an efficient heuristic for traffic provisioning that achieves near-optimal midgress and is suitable for use in production settings. Further, we show how our algorithms can be extended to other settings that require minimum caching performance per traffic class and minimum content duplication for fault tolerance. Finally, our paper provides a strong case for implementing midgress-aware traffic provisioning in production CDNs.},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {inproceedings}
\r\n}
\r\n<\/pre><\/div>
Close<\/a><\/p><\/div>
Content delivery networks (CDNs) cache and deliver hundreds of trillions of user requests each day from hundreds of thousands of servers around the world. The traffic served by CDNs can be partitioned into hundreds of traffic classes, each with different user access patterns, popularity distributions, object sizes, and performance requirements. Midgress is the cache miss traffic between the CDN's servers and the content provider origins. A major goal of a CDN is to minimize its midgress, since higher midgress translates to higher bandwidth costs and increased user-perceived latency. We propose algorithms that provision traffic classes to servers such that midgress is minimized. Using extensive traces from Akamai's CDN, we show that our midgress-aware traffic provisioning schemes can reduce midgress by nearly 20% in comparison with the midgress-unaware schemes currently in use. We also propose an efficient heuristic for traffic provisioning that achieves near-optimal midgress and is suitable for use in production settings. Further, we show how our algorithms can be extended to other settings that require minimum caching performance per traffic class and minimum content duplication for fault tolerance. Finally, our paper provides a strong case for implementing midgress-aware traffic provisioning in production CDNs.<\/div>
Close<\/a><\/p><\/div>

Rahul Urgaonkar Kevin Spiteri, Ramesh Sitaraman<\/p>

BOLA: Near-Optimal Bitrate Adaptation for Online Videos<\/a> Journal Article<\/span> <\/p>

In: <\/span>IEEE\/ACM Transactions on Networking, <\/span>2020<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2019<\/h3>\r\n <\/td>\r\n <\/tr>

Spiteri, Kevin; Sitaraman, Ramesh; Sparacio, Daniel<\/p>

From theory to practice: Improving bitrate adaptation in the DASH reference player<\/a> Journal Article<\/span> <\/p>

In: <\/span>ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), <\/span>vol. 15, <\/span>no. 2s, <\/span>pp. 67, <\/span>2019<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2017<\/h3>\r\n <\/td>\r\n <\/tr>

Sundarrajan, Aditya; Feng, Mingdong; Kasbekar, Mangesh; Sitaraman, Ramesh K<\/p>

Footprint Descriptors: Theory and Practice of Cache Provisioning in a Global CDN<\/a> Proceedings Article<\/span> <\/p>

In: <\/span>Proceedings of the 13th International Conference on emerging Networking EXperiments and Technologies, <\/span>pp. 55\u201367, <\/span>ACM <\/span>2017<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2015<\/h3>\r\n <\/td>\r\n <\/tr>

Chen, Fangfei; Sitaraman, Ramesh K; Torres, Marcelo<\/p>

End-user mapping: Next generation request routing for content delivery<\/a> Journal Article<\/span> <\/p>

In: <\/span>ACM SIGCOMM Computer Communication Review, <\/span>vol. 45, <\/span>no. 4, <\/span>pp. 167\u2013181, <\/span>2015<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

Maggs, Bruce M; Sitaraman, Ramesh K<\/p>

Algorithmic nuggets in content delivery<\/a> Journal Article<\/span> <\/p>

In: <\/span>ACM SIGCOMM Computer Communication Review, <\/span>vol. 45, <\/span>no. 3, <\/span>pp. 52\u201366, <\/span>2015<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

Gillman, David; Lin, Yin; Maggs, Bruce; Sitaraman, Ramesh K<\/p>

Protecting websites from attack with secure delivery networks<\/a> Journal Article<\/span> <\/p>

In: <\/span>Computer, <\/span>vol. 48, <\/span>no. 4, <\/span>pp. 26\u201334, <\/span>2015<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2014<\/h3>\r\n <\/td>\r\n <\/tr>

Sitaraman, Ramesh K; Kasbekar, Mangesh; Lichtenstein, Woody; Jain, Manish<\/p>

Overlay networks: An akamai perspective<\/a> Journal Article<\/span> <\/p>

In: <\/span>Advanced Content Delivery, Streaming, and Cloud Services, <\/span>vol. 51, <\/span>no. 4, <\/span>pp. 305\u2013328, <\/span>2014<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2011<\/h3>\r\n <\/td>\r\n <\/tr>

Andreev, Konstantin; Maggs, Bruce M; Meyerson, Adam; Saks, Jevan; Sitaraman, Ramesh K<\/p>

Algorithms for constructing overlay networks for live streaming<\/a> Journal Article<\/span> <\/p>

In: <\/span>arXiv preprint arXiv:1109.4114, <\/span>2011<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2010<\/h3>\r\n <\/td>\r\n <\/tr>

Nygren, Erik; Sitaraman, Ramesh K; Sun, Jennifer<\/p>

The akamai network: a platform for high-performance internet applications<\/a> Journal Article<\/span> <\/p>

In: <\/span>ACM SIGOPS Operating Systems Review, <\/span>vol. 44, <\/span>no. 3, <\/span>pp. 2\u201319, <\/span>2010<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2004<\/h3>\r\n <\/td>\r\n <\/tr>

Kontothanassis, Leonidas; Sitaraman, Ramesh; Wein, Joel; Hong, Duke; Kleinberg, Robert; Mancuso, Brian; Shaw, David; Stodolsky, Daniel<\/p>

A transport layer for live streaming in a content delivery network<\/a> Journal Article<\/span> <\/p>

In: <\/span>Proceedings of the IEEE, <\/span>vol. 92, <\/span>no. 9, <\/span>pp. 1408\u20131419, <\/span>2004<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

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2002<\/h3>\r\n <\/td>\r\n <\/tr>

Dilley, John; Maggs, Bruce; Parikh, Jay; Prokop, Harald; Sitaraman, Ramesh; Weihl, Bill<\/p>

Globally distributed content delivery<\/a> Journal Article<\/span> <\/p>

In: <\/span>IEEE Internet Computing, <\/span>vol. 6, <\/span>no. 5, <\/span>pp. 50\u201358, <\/span>2002<\/span>.<\/p>

Links<\/a><\/span> | BibTeX<\/a><\/span><\/p>

@article{dilley2002globally,
\r\ntitle = {Globally distributed content delivery},
\r\nauthor = {John Dilley and Bruce Maggs and Jay Parikh and Harald Prokop and Ramesh Sitaraman and Bill Weihl},
\r\nurl = {https:\/\/groups.cs.umass.edu\/ramesh\/wp-content\/uploads\/sites\/3\/2019\/12\/Globally-distributed-content-delivery.pdf},
\r\nyear  = {2002},
\r\ndate = {2002-01-01},
\r\njournal = {IEEE Internet Computing},
\r\nvolume = {6},
\r\nnumber = {5},
\r\npages = {50--58},
\r\npublisher = {IEEE},
\r\nkeywords = {},
\r\npubstate = {published},
\r\ntppubtype = {article}
\r\n}
\r\n<\/pre><\/div>
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