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You're reading from  MongoDB 4 Quick Start Guide

Product typeBook
Published inSep 2018
Reading LevelIntermediate
PublisherPackt
ISBN-139781789343533
Edition1st Edition
Languages
JavaScript
Tools
MongoDB
Concepts
Databases
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Author (1)
Doug Bierer
Doug Bierer
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Doug Bierer

Doug Bierer has been hooked on computers since his first program, written on a DEC PDP-8, in 1971. In his wide-ranging career, he has been a professional contract programmer since 1978, having written applications in BASIC, PL/I, assembler, FORTH, C, C++, dBase/FoxBase/Clipper, Pascal, Perl, Java, and PHP. He deployed his first website in 1993 while living in San Francisco. He speaks four languages, has traveled extensively, and now resides in Thailand. He also spent some years doing system administration and TCP/IP networking. Some of his technical works include PHP 7 Programming Cookbook and Learning MongoDB 4.x (Packt), as well as Learning PHP and MySQL, Learning PHP Security and Learning Doctrine (O'Reilly Media).
Read more about Doug Bierer

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Sharding

Command summary:

  • sh.addShard( "host:port" )
  • sh.enableSharding( "database" )
  • sh.shardCollection( "database.collection", { field: direction } )
  • sh.status()

Whereas replication is designed to provide redundancy of data, sharding is a feature which provides horizontal scaling. This means that instead of having a single extremely powerful server (vertical scaling), you spread the data across multiple servers operating in a cluster. This facility gives you the ability to handle massive amounts of data and lends itself to the cloud environment. Not only that, but because you have a subset of the entire database residing on multiple servers, each server is then able to handle its own database tasks, thus providing a means of load balancing.

Before we cover how to implement a sharded cluster, it's important to understand how sharding operates...

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MongoDB 4 Quick Start Guide
Published in: Sep 2018Publisher: PacktISBN-13: 9781789343533
© 2018 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Doug Bierer

Doug Bierer has been hooked on computers since his first program, written on a DEC PDP-8, in 1971. In his wide-ranging career, he has been a professional contract programmer since 1978, having written applications in BASIC, PL/I, assembler, FORTH, C, C++, dBase/FoxBase/Clipper, Pascal, Perl, Java, and PHP. He deployed his first website in 1993 while living in San Francisco. He speaks four languages, has traveled extensively, and now resides in Thailand. He also spent some years doing system administration and TCP/IP networking. Some of his technical works include PHP 7 Programming Cookbook and Learning MongoDB 4.x (Packt), as well as Learning PHP and MySQL, Learning PHP Security and Learning Doctrine (O'Reilly Media).
Read more about Doug Bierer

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