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NoSQL: Distributed and Scalable Non-Relational Database Systems

Oct 19, 2009, 16:02 (1 Talkback[s])
(Other stories by Jeremy Zawodny)

"There's an interesting shift happening in the world of Web-scale data stores. A whole new breed of scalable data stores is gaining popularity very quickly. The traditional LAMP stack is starting to look like a thing of the past. For a few years now, memcached has often appeared right next to MySQL, and now the whole "data tier" is being shaken up.

"While some might see it as a move away from MySQL and PostgreSQL, the traditional open source relational data stores, it's actually a higher-level change. Much of this is change is the result of a few revelations:

1. a relational database isn't always the model or system for every piece of data
2. relational databases are tricky to scale (especially if you start with a single monolithic configuration–they aren't distributed by design)
3. normalization often hurts performance
4. in many applications, primary key look-ups are all you need"

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