if you're looking for a business idea, drop everything and check 24 minutes of literal gold.

I recently wrote a post sharing my experience with Big Tech jobs. Over there, I promised to share my notes on System Design preparation. So here I am documenting couple points that have worked for me & people I know. Caution: > Getting good at System Design is a long term

things no fullstack roadmap will ever teach you (2/100) - JWT Basics 🔥 jwt (json web token) is the most abused auth tool in modern apps. everyone copies boilerplate, few actually understand it. what a jwt is: • a signed string (header.payload.signature) • base64

𝗪𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗲 𝘀𝗶𝗻𝗴𝗹𝗲 𝗺𝗼𝘀𝘁 𝗵𝗲𝗹𝗽𝗳𝘂𝗹 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝘆 𝘁𝗼 𝗶𝗺𝗽𝗿𝗼𝘃𝗲 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽'𝘀 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲? It is to 𝗰𝗮𝗰𝗵𝗲 (𝗮𝗹𝗺𝗼𝘀𝘁) 𝗲𝘃𝗲𝗿𝘆𝘁𝗵𝗶𝗻𝗴! Caching stores copies of frequently accessed data in a readily accessible location,

You’re in a AI Engineer interview at Microsoft, and the interviewer asks: ‘Our team needs to build RAG over 10M documents. Which vector database and why?’ Here’s how you answer:

You’re in a backend interview. They ask: “How would you design a search system (like product search on Amazon)?” Here’s how to approach it:

𝗥𝗔𝗚 (Retrieval Augmented Generation) vs. Memory These two terms are often confused, but they play very different roles. RAG grounds an LLM with external knowledge. A query is embedded, matched against a vector store, and the top k-chunks are injected into context. Memory is

If you're a backend engineer who want to get better at system design, read these 14 articles: ↓

If you want to get started with system design (I'm not joking), learn these 14 concepts:

ACID clearly explained. ACID stands for Atomicity, Consistency, Isolation, and Durability. These are the foundations of transaction systems, 𝗲𝗻𝘀𝘂𝗿𝗶𝗻𝗴 𝗮𝗰𝗰𝘂𝗿𝗮𝘁𝗲 𝗱𝗮𝘁𝗮 𝗲𝘃𝗲𝗻 𝗶𝗻 𝘂𝗻𝗲𝘅𝗽𝗲𝗰𝘁𝗲𝗱 𝘀𝗶𝘁𝘂𝗮𝘁𝗶𝗼𝗻𝘀 𝗹𝗶𝗸𝗲 𝘀𝘆𝘀𝘁𝗲𝗺 𝗰𝗿𝗮𝘀𝗵𝗲𝘀

From 2026, I will start investing in Nigerian startups especially those whose founders are still very young, overlooked and don’t have access to the “circle” of Nigeria tech gatekeepers. Yes, I will bet on those i know have potentials. I will also speak to my friends in the

Experiment 002 : Smooth Infinite Page Transition Inspired by the amazing work of Tomoya Okada on his SOTD Layrid. Original site: layrid.tomoyaokada.com Scale animation + progress sync + seamless image transition Full breakdown on YouTube → youtube.com/watch?v=w7q2k_…

Anyone know any TS utility library for RAG? I mean chunking algorithms, documented, in TypeScript. Langchain has them, but all the docs are in Python.

Latency vs. Throughput Ever wondered why your app feels slow even when the bandwidth looks fine? Latency and throughput explain two very different stories of performance. Latency measures the delay per packet. It is what users feel when they click a button. It’s responsiveness.

When you're building APIs in Node.js, there are some security best practices you should follow. These will help you harden your APIs and protect them from common threats. In this guide, Manish shows you how to use environment variables, validate input, rate limit your

You queue a job to update user data. While it's running, the user edits their info in the app. Job finishes late and overwrites fresh input. Now the DB has stale data.| How do you prevent this?

jason liu Surprised nobody has recommended Jordan has no life: youtube.com/playlist?list=…

As a React.js Developer, how many of the below concepts can you explain : 1. Fiber Architecture 2. Concurrent Mode 3. Suspense for Data Fetching 4. Passive Effects vs Layout Effects 5. Hydration 6. useTransition 7. FlushSync and Deferred Updates 8. Error Boundaries 9.

A surprising number of people are claiming this isn't real? Here's the parallel run I did in Cursor. Same exact prompt. Same exact codebase. Gemini gladly wrote arbitrary code execution for a tool that LLMs use. No validation whatsoever.

I recently integrated a monitoring system, using Prometheus and Grafana, into Ønos 👨‍💻's platform, myzendo.vercel.app. My contribution was made because the project is open source! Here's how the live dashboard looks: