Hacker News on 22 April 2011

• Linus Torvalds on Garbage Collection (2002)
• Doom engine code review
• Questions you’ll (probably) get asked at your YC interview
• Why Twilio Wasn’t Affected by Today’s AWS Issues
• Super Mario 64 was built with a system written in Lisp
• Basics of Compiler Design
• Court rules Linux kernel infringes on patents. Lawsuit avalanche to follow.
• Amazon’s problem isn’t the outage, it’s the communication
• The Dark Side of Hadoop
• Show HN: Amazon EC2 instance comparison table