AWS Docker Swarm Setup - Scripts to give you a 3 node cluster with pretty much just "push the button" effort. Uses Terraform to do the work.
Ruby Standard Gems - More and more of the Ruby standard library is being moved into gems. This is good, because it means faster bug fixes & fewer "big bang" updates.
Getting Hacked, Lessons Learned - There's always room to be more secure. Some good advice here, though my own approach to Bitcoin is "too silly to play with."