Function Declaration vs Function Expression: What's the Difference?
20h ago · 7 min read · By Saurabh Prajapati | IBM Software Engineer | WebDev Cohort 2026 Why I Wanted to Explore This When I first started writing JavaScript, I would just write functions like this and move on: function gr
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The Chai Stall Promise System: How Hitesh Bhaiya Manages Orders ☕👨💻
Mar 1 · 9 min read · By Saurabh Prajapati | Full-Stack Engineer @ IBM India Software Lab Before We Start — Picture This... It's 8:15 AM. Hitesh Bhaiya's chai stall is absolutely packed. Ten students from the cohort are s
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How I Broke Down WhatsApp's System Design — And What I Learned Along the Way
Feb 5 · 12 min read · By Saurabh Prajapati | Full-Stack Engineer So, I recently sat down to design WhatsApp from scratch. Not the real thing — obviously — but the kind of "design this system" challenge you'd face in a senior-level system design interview. And honestly? I...
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