GraphX is the blue ocean for scala engineers @ Scala Matsuri 2014鉄平 土佐
This document discusses GraphX, a component of Spark that allows for graph-parallel and data-parallel computation using a single API. It notes that GraphX provides an advantage for Scala engineers by allowing graph data to be handled similarly to Scala's collection API. While GraphX is still young, it represents a good solution for graph-parallel problems and an opportunity for Scala developers to work with graph-structured data.
This document discusses using etckeeper to manage configuration files under version control with Git. It explains how etckeeper initializes a Git repository for /etc, configures Git user information, and uses etckeeper commands as a frontend to common Git commands like status, diff, add, and commit. Backup of the /etc Git repository to remote servers is also described.