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.
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