Black and white listing on article index


  • a set of five million documents representing articles you can buy (article id)
  • a set of ten thousand users representing the buyers (customer id)
  • white lists and black lists defined daily on the articles: this buyer can only search
    and find these articles. These lists can contain from 5 tot 500.000 articles (on article id)
  • users are assigned one or more white or black lists (on list id (?))

In a search query on the articles,

  • return results only out of the allowed combined subset of articles as defined by the original and, white and blacklists.
  • the search queries are real time, so return a result set asap.

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