AKAshaaf Khaninashaaf.hashnode.dev·3d ago · 10 min readBehind the Illusion of Perfection: Why Your RAG Pipeline Fails in ProductionWhen Large Language Models first took the world by storm, they felt like magic. But developers quickly ran into a brick wall: these models were stuck in the past, bounded by strict "knowledge cutoffs"00
AKAshaaf Khaninashaaf.hashnode.dev·Jul 3 · 7 min readStoring Uploaded Files and Serving Them in Express: The Definitive GuideThink about the apps you use every day. Whether you are changing your profile picture on a social media app, uploading a PDF receipt to an expense tracker, or attaching a resume to a job board, file u00
AKAshaaf Khaninashaaf.hashnode.dev·Jul 1 · 9 min readDemystifying the Black Box: How ChatGPT Actually Understands Your PromptsEvery time you hit "Send" on ChatGPT or Claude, a deceptive illusion takes place. Within milliseconds, words stream onto your screen, crafted with a level of nuance, wit, and logic that feels unmistak00
AKAshaaf Khaninashaaf.hashnode.dev·May 31 · 8 min readHow Instagram Stores Reels, Photos, and Drafts Behind the ScenesIntroduction Imagine recording a 60-second Reel on Instagram. You add music, apply filters, write a caption, and then decide: "I'll post this later." You tap Save Draft and close the app. Hours late00
AKAshaaf Khaninashaaf.hashnode.dev·May 31 · 8 min readHow WhatsApp Works Without Internet: Offline Messaging and Sync ExplainedIntroduction Imagine you're on a flight and your phone is in Airplane Mode. You open WhatsApp, type: "Hey, I'll call you later." and tap Send. The message instantly appears in your chat window even 00
