According to Wikipedia, a ceilometer is a device that uses a laser or other light source to determine the height of a cloud base. And it is also the name of the framework for...

In this post we will compare performance of MongoDB and TokuMX, a MongoDB performance engine from Tokutek. We will conduct three simple experiments that (almost) anyone without any programming skills can try and reproduce. In...

  Replica Sets in MongoDB are very useful. They provide multiple copies of data, automated failover and read scalability. A Replica Set can consist of up to 12 nodes, with only one primary node (or...