The 5 Questions to Ask About NoSQL
Here's a presentation on Apache Cassandra from Big Data Spain 2012. The abstract is as follows:
One of the most important principles of NoSQL is, One size does not fit all. But the proliferation of options makes it difficult to know which solution is most appropriate for your problem. Jonathan will cover five important questions with which to evaluate potential solutions, and give examples how Apache Cassandra answers those questions.
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