The NoSQL Ecosystem

Jonathan Ellis (DataStax)
Location: Portland 255
Presentation: The NoSQL Ecosystem Presentation [PDF]
Average rating: ***..
(3.79, 24 ratings)


  • Wrong: trying to fit each NoSQL database in a pigeonhole
  • Right: understanding the design decisions and tradeoffs made
  • Products discussed: Cassandra, CouchDB, HBase, MongoDB, Neo4J, Redis, Riak, Scalaris, Tokyo Cabinet, Voldemort


  • Scaling reads vs scaling writes
  • Adding (and removing) machines to a live cluster
  • Multiple data centers


  • Failure scenarios
  • Monitoring
  • Schema changes

Data and query model

  • Key/Value
  • ColumnFamily
  • Document
  • Graph
  • More

Persistence design

  • Affects both speed and features
  • B-trees
  • Memtable/SSTable
  • Pluggability
Photo of Jonathan Ellis

Jonathan Ellis


Jonathan is an expert in databases and distributed systems. At Mozy, he built a scalable multi-petabyte storage system based on Reed-Solomon encoding.

He currently works on the Cassandra distributed database and cloud infrastructure for Rackspace Hosting.

Comments on this page are now closed.


Deborah Lewis
07/22/2010 11:15am PDT

this was a really nicely done overview – delivered on what was promised, good coverage of the subject. One of the better sessions and well worth my time to get a quick overview of the nosql space.

Cole Tuininga
07/21/2010 6:14am PDT

Interesting talk. Nice to have some info on the different projects summed up. Suggestion for another time – concrete examples (goals, projects, etc) of when one might choose each individual “NoSQL” solution.

Sam Bao
07/21/2010 6:00am PDT

when will the slides/video be available online?

Picture of Kris Read
Kris Read
07/21/2010 4:42am PDT

Good intro to this topic. Hopefully you convinced some skeptics… wish NoSQL vs Relational wasn’t such a religious topic.

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