NODE.JS PERFORMANCE: PROCESSING 14GB FILES 78% FASTER WITH BUFFER OPTIMIZATION

Summary from the TLDR Dev newsletter

A developer optimized Node.js performance for processing a 14.8GB weather data file containing 1 billion temperature measurements to achieve a 78% speedup. The main breakthrough involved bypassing JavaScript's string encoding overhead by parsing raw bytes directly, storing temperatures as integers (e.g., 25.3°C as 253 tenths), and implementing a hash-first approach that only decoded station names when absolutely necessary.