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glad you didn't like it.

Vertica was not free, HBase was really heavyweight, & I knew i didn't want RDBMS. The sensor data itself is plain csvs ;)

Cassandra still does look interesting, although it looked like it would take me much longer to get it going; perhaps it will get rewritten. (The mongo solution only took a week to get something usable.)

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Curious to hear why you thought it would take longer to get going with Cassandra. A single-node Cassandra cluster can be up with a 1-line command. Was it the availability of clients or interface abstractions? I understand that tutorial & documentation is not as readily available, so that's understandable.

It wasn't the ease of install or simplest-case-deployment, that's for sure. I did install it and kick the tires.

This was around the end of 2009, and i don't think there were many clients available (i see pycassa dates to 2010-04).

again, ease of development is much more important to us than performance; it'll probably be a long, long time before our db engine is the choke point, at which point we'll have resources to use a heavier tool.

This makes sense, the landscape was very different. Cassandra wasn't something I would have used back then either.

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