A practical look at Retrieval-Augmented Generation: embeddings, vector search, and how to wire them to an LLM—plus how this portfolio implements the same pattern with Next.js, Supabase pgvector, and Hugging Face.
Practical, easy-to-apply security improvements for any online project — from security headers, rate limiting, login protection, to safe file uploads and more.
Learn how to create an automated MongoDB backup system using shell scripts that dump databases, compress them, and upload to AWS S3 with automatic cleanup.
Production-ready guide to deploy a Next.js app on Ubuntu using Git for code, PM2 for process management, Nginx as reverse proxy, and Certbot for HTTPS.
Step-by-step guide to creating a self-signed certificate with OpenSSL and configuring Nginx with secure defaults.
Step-by-step guide to installing and configuring vsftpd on Ubuntu, creating a restricted FTP user, and opening firewall ports.
Harden an Ubuntu server by creating a non-root user with SSH key-based access, disabling root login, and configuring sudo privileges.
Understanding forwardRef in React: when to use it, why it's necessary, and practical examples for building reusable components.
A comprehensive guide to understanding when and why to use useEffect, useMemo, and useCallback in React applications.
