Art of R Programming
Norman Matloff
Polished Ruby Programming
Jeremy Evans
Technology Strategy Patterns
Eben Hewitt
Mastering pfSense, Second Edition
David Zientara
Building Event-Driven Microservices
Adam Bellemare
Building Microservices
Sam Newman
Microservices: Up and Running
Ronnie Mitra and Irakli Nadareishvili