Mastering pfSense, Second Edition
David Zientara
CompTIA Network+™ Study Guide
Todd Lammle
Head First Software Architecture
Mark Richards & Neal Ford & Raju Gandhi
Software Architecture: The Hard Parts
Mark Richards & Neal Ford & Pramod Sadalage & and Zhamak Dehghani
Time Series Databases
Ted Dunning & Ellen Friedman
Graph Databases
Ian Robinson & Jim Webber & Emil Eifrem