Archive for the tag 'nosql'

distributed key/value stores shootout (part 1)

Posted by mark on February 7, 2010 under Technology

For a project of mine I have been looking today on key/value stores. Redis, Tokyo Cabinet and Memcache are the popular ones, but I have been interested in benchmarking the distributed species of its kind (“DKVS”). Those are needed in high scalable systems as replacement for traditional databases, which happen not to scale well.

These are the criteria which the DKVS must meet:

  1. distribute data amongst one to four nodes (and the more the better)
  2. nodes must be able to be added on-the-fly,
  3. … and removed on-the-fly
  4. data has to be held redundantly, even after removal of a node
  5. data access has to be transparent, i.e. every node shall be equal
  6. scale with additional nodes – for every additional node there should be an increase of GET and SET operations per second up to the maximum dictated by the hardware and network

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Monologe conference – Post SQL

Posted by mark on November 5, 2009 under Technology

Last Thursday we’ve had a conference about innovativations in IT and systems design here in Hannover. And as its main organizer I held a rather long workshop and speech of about three hours about database (mis)use and which and for what purpose a certain DBMS or storage would fit. In case you missed it, here are the slides (in German). It is about: Read more »

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