Jeff Merlet

Architecture, Scalability, Web, Mobility, Synchronization 
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May 21, 2009

Liked this simple but complete tutorial on making a Twitter-like service using a key-value DB

This is a good tutorial for people just learning on how to use a key-value store instead of a usual relational database. And this tutorial is great as demonstrating a fully working Web 2.0 service, including security. It is based on the new key-value store http://code.google.com/p/redis/ a non-volatile memcached-like store written in ANSI-C for Posix systems.

Related: An overview of modern SQL-free databases

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Filed under  //   Database   Development   Distributed   Key-Value   Key-Value Store   Persistence   Programming   Store   Tutorial   Twitter  

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April 18, 2009

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.

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Filed under  //   Database   Distributed   Key-Value   Key-Value Store   LightCloud   MySQL   Performance   Project Voldemort   Tokyo Cabinet   Tokyo Tyrant  

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