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Tens of millions customers at peak times using tens of thousands of servers IntroductionĪmazon runs a world-wide e-commerce platform that serves : Reliability D.4.2 :Īlgorithms, Management, Measurement, Performance, Design, Reliability. Resolution in a manner that provides a novel interface for developers to use.ĭ.4.2 : Storage Management D.4.5 Makes extensive use of object versioning and application-assisted conflict To achieve this level ofĪvailability, Dynamo sacrifices consistency under certain failure scenarios. Use to provide an “always-on” experience. This paper presents the design and implementation of Dynamo,Ī highly available key-value storage system that some of Amazon’s core services
#Anti entropy software
Reliability and scalability of the software systems.
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Way persistent state is managed in the face of these failures drives the At this scale, small and large components fail continuously and the Thousands of servers and network components located in many datacenters around Many web sites worldwide, is implemented on top of an infrastructure of tens of The platform, which provides services for The world even the slightest outage has significant financial consequences and Reliability at massive scale is one of the biggestĬhallenges we face at, one of the largest e-commerce operations in Kakulapati, Avinash Lakshman, Alex Pilchin, Swaminathan Sivasubramanian, Peter Giuseppe DeCandia, Deniz Hastorun, Madan Jampani, Gunavardhan The definitive version was published in SOSP’07, October 14–17, 2007, Stevenson, Washington, USA, Copyright 2007 ACM 978-1-59593-591-ĭynamo: Amazon’s Highly Available Key-value Store It is posted here by permission of ACM for your personal use. This is the author's version of the work. The text of the paper is copyright of the ACM and as such the following statement applies:
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You can also read the full online version.
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#Anti entropy pdf
Giuseppe DeCandia, Deniz Hastorun, Madan Jampani, Gunavardhan Kakulapati, Avinash Lakshman, Alex Pilchin, Swami Sivasubramanian, Peter Vosshall and Werner Vogels, “Dynamo: Amazon's Highly Available Key-Value Store”, in the Proceedings of the 21st ACM Symposium on Operating Systems Principles, Stevenson, WA, October 2007.Ī pdf version is available here. Much of the engineering work at Amazon, whether it is in infrastructure, distributed systems, workflow, rendering, search, digital, similarities, supply chain, shipping or any of the other systems, is equally highly advanced. We are extremely fortunate that the paper was selected for publication in SOSP only a very few true production systems have made it into the conference and as such it is a recognition of the quality of the work that went into building a real incrementally scalable storage system in which the most important properties can be appropriately configured.ĭynamo is representative of a lot of the work that we are doing at Amazon we continuously develop cutting edge technologies using recent research, and in many cases do the research ourselves. As far as I know Dynamo is the first production system to use the synthesis of all these techniques, and there are quite a few lessons learned from doing so. We submitted the technology for publication in SOSP because many of the techniques used in Dynamo originate in the operating systems and distributed systems research of the past years DHTs, consistent hashing, versioning, vector clocks, quorum, anti-entropy based recovery, etc. Let me emphasize the internal technology part before it gets misunderstood: Dynamo is not directly exposed externally as a web service however, Dynamo and similar Amazon technologies are used to power parts of our Amazon Web Services, such as S3. The technology is designed to give its users the ability to trade-off cost, consistency, durability and performance, while maintaining high-availability. Dynamo is internal technology developed at Amazon to address the need for an incrementally scalable, highly-available key-value storage system. In two weeks we’ll present a paper on the Dynamo technology at SOSP, the prestigious biannual Operating Systems conference.