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VoltDB Don’ts Validating NoSQL Assumptions

Interesting to note that some VoltDB don’ts from the paper ☞ Do’s and Don’ts (pdf) are validating some major assumptions in the NoSQL space:

Don’t create tables with very large rows (that is, lots of columns or large VARCHAR columns). Several smaller tables with a common partitioning key are better.

Basically both wide-column stores (i.e. Cassandra, HBase, Hypertable) with their column-families and document databases (i.e. CouchDB, MongoDB, RavenDB, Terrastore) with their schema-less approach are addressing this issue.

  1. Don’t use ad hoc SQL queries as part of a production application.

Firstly this points to the mindset change required by the NoSQL space when doing data modeling: think about data access patterns.

Secondly, it pretty much validates CouchDB and RavenDB approaches of having queries defined upfront making their reads extremely fast.