Hacker News on 12 June 2021

• Do you really need Redis? How to get away with just PostgreSQL
• The code on the laptop in the stock photo at developer.bbc.com is user-editable
• How fighter jets lock on, and how the targets know (2014)
• Win at Risk by using systems thinking
• Taildrop was kind of easy
• Ask HN: Tools you have made for yourself?
• Programmer's Resignation from 1985
• Elevator Saga: An elevator programming game (2015)
• The Modern Mathematics of Deep Learning
• Show HN: LANDrop – A cross-platform AirDrop-like file transfer tool