Graph Databases
Ian Robinson & Jim Webber & Emil Eifrem
Building Secure and Reliable Systems
Betsy Beyer & Heather Adkins & Paul Blankinship & Piotr Lewandowski & Ana Oprea & and Adam Stubblefield
Foundations of Scalable Systems
Ian Gorton
The Linux Command Line: A Complete Introduction, 2nd Edition
William Shotts
Time Series Databases
Ted Dunning & Ellen Friedman