Writing and Querying MapReduce Views in CouchDB

Writing and Querying MapReduce Views in CouchDB

Bradley Holt

If you must use CouchDB to aid real-world functions, you will want to create MapReduce perspectives that allow you to question this document-oriented database for significant facts. With this brief and concise book, you are going to tips on how to create various MapReduce perspectives that will help you question and combination information in CouchDB’s huge, allotted datasets.

You'll get step by step directions and many pattern code to create and discover numerous MapReduce perspectives in the course of the process the e-book, utilizing an instance database you build. To paintings with those assorted perspectives, you’ll how one can use the Futon net management console and the cURL command line instrument that include CouchDB.

  • Learn how the Map and decrease steps paintings independently and jointly to index your data
  • Use the instance database to create numerous transitority perspectives in keeping with varied criteria
  • Discover the makes use of of Map and decrease JavaScript functions
  • Convert your transitority perspectives to everlasting perspectives inside of a layout document
  • Learn a number of thoughts for querying the information inside your views
  • Limit the variety of effects again, bypass a few effects, or opposite the order of the output
  • Group your effects by way of unique keys or via elements of keys

    Bradley Holt, co-founder of the inventive providers company came across Line, is an internet developer and entrepreneur ten years of Hypertext Preprocessor and MySQL adventure. He all started utilizing CouchDB ahead of the discharge of model 1.0. Bradley is an energetic member of the personal home page neighborhood, and will be reached at bradley-holt.com.

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