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You're reading from  Mastering DynamoDB

Product typeBook
Published inAug 2014
PublisherPackt
ISBN-139781783551958
Edition1st Edition
Tools
DynamoDB
Concepts
Databases
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Author (1)
Tanmay Deshpande
Tanmay Deshpande
author image
Tanmay Deshpande

Tanmay Deshpande is a Hadoop and big data evangelist. He currently works with Schlumberger as a Big Data Architect in Pune, India. He has interest in a wide range of technologies, such as Hadoop, Hive, Pig, NoSQL databases, Mahout, Sqoop, Java, cloud computing, and so on. He has vast experience in application development in various domains, such as oil and gas, finance, telecom, manufacturing, security, and retail. He enjoys solving machine-learning problems and spends his time reading anything that he can get his hands on. He has great interest in open source technologies and has been promoting them through his talks. Before Schlumberger, he worked with Symantec, Lumiata, and Infosys. Through his innovative thinking and dynamic leadership, he has successfully completed various projects. He regularly blogs on his website http://hadooptutorials.co.in. You can connect with him on LinkedIn at https://www.linkedin.com/in/deshpandetanmay/. He has also authored Mastering DynamoDB, published in August 2014, DynamoDB Cookbook, published in September 2015, Hadoop Real World Solutions Cookbook-Second Edition, published in March 2016, Hadoop: Data Processing and Modelling, published in August, 2016, and Hadoop Blueprints, published in September 2016, all by Packt Publishing.
Read more about Tanmay Deshpande

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Functional components

Till now, we have seen how DynamoDB's architecture provides so many features in terms of scalability, fault tolerance, availability, and so on. We also saw how ring membership is maintained and how it helps DynamoDB's desired specialities.

Each DynamoDB node consists of the following components:

  • Request coordinator

  • Membership and failure detection

  • Local persistent store (storage engine)

Request coordinator

The request coordinator is an event-driven messaging component that works like Staged-Even Drive Architecture (SEDA). Here, we break the complex event into multiple stages. This decouples event and thread scheduling from application logic. You can read more about SEDA at www.eecs.harvard.edu/~mdw/proj/seda/. This component is mainly responsible for handling any client requests coming its way.

Suppose a coordinator receives a get request, then it asks for the data from the respective nodes where the key range lies. It waits till it gets the acceptable number of responses...

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Mastering DynamoDB
Published in: Aug 2014Publisher: PacktISBN-13: 9781783551958
© 2014 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Tanmay Deshpande

Tanmay Deshpande is a Hadoop and big data evangelist. He currently works with Schlumberger as a Big Data Architect in Pune, India. He has interest in a wide range of technologies, such as Hadoop, Hive, Pig, NoSQL databases, Mahout, Sqoop, Java, cloud computing, and so on. He has vast experience in application development in various domains, such as oil and gas, finance, telecom, manufacturing, security, and retail. He enjoys solving machine-learning problems and spends his time reading anything that he can get his hands on. He has great interest in open source technologies and has been promoting them through his talks. Before Schlumberger, he worked with Symantec, Lumiata, and Infosys. Through his innovative thinking and dynamic leadership, he has successfully completed various projects. He regularly blogs on his website http://hadooptutorials.co.in. You can connect with him on LinkedIn at https://www.linkedin.com/in/deshpandetanmay/. He has also authored Mastering DynamoDB, published in August 2014, DynamoDB Cookbook, published in September 2015, Hadoop Real World Solutions Cookbook-Second Edition, published in March 2016, Hadoop: Data Processing and Modelling, published in August, 2016, and Hadoop Blueprints, published in September 2016, all by Packt Publishing.
Read more about Tanmay Deshpande

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