Double Shot #1333

Ruby 2.1 Garbage Collection: ready for production - A look at the internals of ruby GC, some of the cases where it fails, and what you can do about it.
How to Build a Ruby Gem With Bundler, Test-Driven Development, Travis CI And Coveralls, Oh My! - A good walkthrough of the current state of gem building.
Heartbleed Test - Find out whether a server is vulnerable to the recent devastating OpenSSL bug.