If you wish to use CouchDB to support actual-world applications, you will must create MapReduce views that allow you to question this doc-oriented database for meaningful data. With this brief and concise e book, you'll learn how to create a wide range of MapReduce views that can assist you question and aggregate knowledge in CouchDB’s large, distributed datasets.
You may get step-by-step instructions and many pattern code to create and discover several MapReduce views through the course of the ebook, using an example database you construct. To work with these different views, you’ll learn to use the Futon net administration console and the cURL command line software that include CouchDB.
Learn how the Map and Reduce steps work independently and collectively to index your knowledge
Use the example database to create several short-term views based on totally different standards
Discover the makes use of of Map and Reduce JavaScript capabilities
Convert your temporary views to everlasting views within a design doc
Be taught several choices for querying the data inside your views
Limit the number of outcomes returned, skip some outcomes, or reverse the order of the output
Group your outcomes by exact keys or by parts of keys
Bradley Holt, co-founding father of the inventive providers firm Discovered Line, is an internet developer and entrepreneur ten years of PHP and MySQL experience. He began utilizing CouchDB before the discharge of version 1.0. Bradley is an energetic member of the PHP community, and will be reached at bradley-holt.com.
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