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An overview of modern SQL-free databases
SQL-free databases are quickly moving forward those days. They aren't "embedded databases" nor "key-value databases" anymore. Modern SQL-free databases are now featureful, while remaining fast, light and reliable. They really can replace SQL databases (even column databases) for a lot of tasks.
Via http://00f.net/2009/an-overview-of-modern-sql-free-databases
Update 1: check-out also the post from Richard Jones on a list of distributed key-value stores with a quick decent analysis on most of them.
Update 2: Leonard Lin over at random($foo) posted yesterday a great post on his own experience with key-value stores. Worth it the read as he ended up writing his own thin consistent hashing layer in front of Tokyo Tyrant, i.e. pretty equivalent to what LightCloud is.
Update 3: Even if done in Python, here i an interesting performance comparison of key/value stores for language model count.
Update 4: And what about another key-value database: Redis, written in ANSI-C for Posix systems?
Update 5: Yahoo is talking about their own key-value store Sherpa.
Update 6: Liked this post on the rational why one will want to go beyond a relational database.
Update 7: But SQL-free DBs do have some serious drawback regarding mostly ad hoc reporting and ad hoc data fixing as alighted in this post on the dark side of NoSQL.
