Jonathan Ellis

By most accounts, the first databases came on line in the 1960s. This class of software has continued to evolve alongside the technology it runs on and the applications it supports. In

Apache Pulsar is a cloud-native, distributed messaging and streaming platform originally created at Yahoo! and now a top-level Apache Software Foundation project (pulsar.apache.org).

Cassandra was initially released in 2008 as a project out of Facebook. Cassandra offered an open source solution to database scalability issues that were being tackled internally by