KAKareem Ashrafinkareemdev.hashnode.dev·1d ago · 20 min readScaling Reads vs Scaling Writes — A Complete GuideA practical reference for understanding how systems handle traffic at scale. Read it top-to-bottom once; jump back to specific sections when you need them. What you will walk away with: Why reads and00
KAKareem Ashrafinkareemdev.hashnode.dev·2d ago · 34 min readConcurrency & Multitasking: The Complete Guide From OS Fundamentals to Production SystemsA full, no-shortcut guide: how the kernel, processes, threads, context switches, and schedulers actually work — and why that knowledge decides how you write async code, goroutines, and scalable server00
KAKareem Ashrafinkareemdev.hashnode.dev·Apr 24 · 13 min readFrom 6 GB to 2 GB: How We Tamed a Memory Beast in Node.js A Number That Made Us Stop During a routine load test, we watched our Node.js application climb to 6 GB of RAM at peak. No memory leak in the traditional sense. No runaway loop we forgot to close. Jus10
