PM2 Mastery: Running Multiple Node.js Apps on Minimal RAM

Most indie developers underestimate the real constraints of running Node.js on budget VPS, leading to crashes and downtime. This guide cuts through the guesswork with actual math: real available RAM after OS overhead, precise PM2 configurations for single or multiple apps, and critical optimizations like swap setup and proper memory limits. Understanding these fundamentals is the difference between stable, cost-effective production and repeated failures.