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  • Book Overview & Buying Learning Couchbase
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Learning Couchbase

Learning Couchbase

By : Henry Potsangbam
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Learning Couchbase

Learning Couchbase

By: Henry Potsangbam

Overview of this book

This book achieves its goal by taking up an end-to-end development structure, right from understanding NOSQL document design to implementing full fledged eCommerce application design using Couchbase as a backend. Starting with the architecture of Couchbase to get you up and running, this book quickly takes you through designing a NoSQL document and implementing highly scalable applications using Java API. You will then be introduced to document design and get to know the various ways to administer Couchbase. Followed by this, learn to store documents using bucket. Moving on, you will then learn to store, retrieve and delete documents using smart client base on Java API. You will then retrieve documents using SQL like syntax call N1QL. Next, you will learn how to write map reduce base views. Finally, you will configure XDCR for disaster recovery and implement an eCommerce application using Couchbase.
Table of Contents (13 chapters)
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11
11. Case Study – An E-Commerce Application
12
Index

Chapter 6. Retrieving Documents without Keys Using Views

So far, you have understood retrieving documents using the document ID only. However, most of the time, we would like to fetch documents using attributes other than the document ID. In this chapter, we will discuss how to retrieve documents using attributes of documents, when you don't know the document ID before hand. This functionality is provided by a mechanism called MapReduce programming, which is referred to as the term view in the Couchbase terminology. Before diving into views, let's discuss the concepts behind the working of MapReduce (MR) programming, which is the core of views. Hence, understanding it is essential in order to write a view efficiently. We will also discuss the life cycle of a view. Subsequently, we will discuss various features provided by views to filter documents, paginations, grouping, and ordering.

You will also learn how to perform SQL queries in the MapReduce format. You will then...

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Learning Couchbase
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