Let’s kick off 2024 true coder style—​I’m excited to announce the One Billion Row Challenge (1BRC), running from Jan 1 until Jan 31. Your mission, should you decide to accept it, is deceptively simple: write a Java program for retrieving temperature measurement values from a text file and calculating the min, mean, and max temperature per weather station. There’s just one caveat: the file has 1,000,000,000 rows!