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CouchDB

Learning CouchDB

Node.js Taiwan Workshop 2012

  • cloud hosting

  • Resource

  • feature

    • 提供多版本的存儲,方便找回舊資料(跟MongoDB不同)
    • 但是如果你的資料是會經常做UPDATE的,使用CouchDB會造成版本過多,空間消耗過大。可以設nocache屬性,關閉這個資料的版本控管
    • Map Reduce
      • Map: interate every object to extract data you need.
      • Reduce : reduce every object instance key into single value.(reduce the number of Map item)

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