“memory is the new disk and disk is the new tape”
There was a time, not too long ago, when developers building web applications with open-source databases chose either MySQL or PostgreSQL. While these relational databases are still extremely popular for many types of applications, in the past few years a bewildering amount of new, non-relational and distributed database projects have appeared. Some of these tools are designed to handle the performance needs of dealing with Internet scale data, and do so by distributing the workload over multiple machines.
The rapid innovation we are seeing in the world of distributed database technology is the result of open-source velocity, ...