SKSWAPNIL KATHALEingenai-swapnilk.hashnode.dev·Jul 19 · 9 min readWhere RAG Fails: Understand the LimitationsOnly LLM alone not enough Large Language Models (LLMs) like ChatGPT, Claude, Gemini, and Llama have changed how we interact with computers. They can write code, answer questions, summarize documents, 00
SKSWAPNIL KATHALEingenai-swapnilk.hashnode.dev·Jul 1 · 8 min readBehind the Magic Work: How ChatGPT Actually Understands Your Questions?We use ChatGPT every single day. Whether you are debugging a tricky piece of JavaScript, writing an email, or just trying to understand how black holes work, you type a prompt -> hit enter -> and boom00
SKSWAPNIL KATHALEinmobile-dev-swapnilk.hashnode.dev·Jun 3 · 8 min readExpo Router vs React Navigation: Which One Should You Use in 2026?Jab hum mobile app development seekhna shuru karte hain, toh humara poora focus UI par hota hai—ek badhiya button bana diya, mast animations daal diye, aur API se data fetch kar liya. Lekin jaise hi a00
SKSWAPNIL KATHALEinmobile-dev-swapnilk.hashnode.dev·Jun 3 · 7 min readHow Instagram, WhatsApp, Uber & Netflix Would Be Built Today Using Expo RouterAapne ek na ek baar zaroor socha hoga: "Yeh Instagram, WhatsApp, ya Uber itne smooth kaise chalte hain? Inka codebase kaisa dikhta hoga?" UI clone banana aasan hai, but Production Engineering aur arc00
SKSWAPNIL KATHALEinmobile-dev-swapnilk.hashnode.dev·May 31 · 5 min readHow Instagram Stores Reels, Photos, and Drafts Behind the Scenes⁉️Kabhi socha hai ki jab aap ek 60-second ki high-quality Reel record karte ho, us par filters lagate ho, aur fir "Save Draft" karke app band kar dete ho, toh woh kahan jati hai? Aur jab upload karte 00