Writing and Querying MapReduce Views in CouchDB 1st Edition by Bradley Holt ISBN 1449303129 978-1449303129

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Product details: 

ISBN 10:  1449303129 

ISBN 13: 978-1449303129

Author: Bradley Holt

If you want to use CouchDB to support real-world applications, you’ll need to create MapReduce views that let you query this document-oriented database for meaningful data. With this short and concise ebook, you’ll learn how to create a variety of MapReduce views to help you query and aggregate data in CouchDB’s large, distributed datasets.

You’ll get step-by-step instructions and lots of sample code to create and explore several MapReduce views through the course of the book, using an example database you construct. To work with these different views, you’ll learn how to use the Futon web administration console and the cURL command line tool that come with CouchDB.

Learn how the Map and Reduce steps work independently and together to index your data
Use the example database to create several temporary views based on different criteria
Discover the uses of Map and Reduce JavaScript functions
Convert your temporary views to permanent views within a design document
Learn several options for querying the data within your views
Limit the number of results returned, skip some results, or reverse the order of the output
Group your results by exact keys or by parts of keys
Bradley Holt, co-founder of the creative services firm Found Line, is a web developer and entrepreneur ten years of PHP and MySQL experience. He began using CouchDB before the release of version 1.0. Bradley is an active member of the PHP community, and can be reached at bradley-holt.com.

Table of contents: 

Chapter 1: Introduction
Resources for Installing CouchDB
Futon
HTTP API
cURL
JSON
Chapter 2: MapReduce
Temporary Views
Map
One-To-One Mapping
One-To-Many Mapping
Conclusion
Reduce
Count
Sum
Stats
Custom Reduce Functions
Limitations of MapReduce
Chapter 3: Design Documents
Titles View
Formats View
Authors View
Storage Considerations
Chapter 4: Querying Views
Range Queries
Rows by Start and End Keys

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Bradley Holt,Writing and Querying,MapReduce Views