System Design Interview: Design a URL Shortener
The question “Design a URL shortener” is a classic system design interview problem. It appears simple on the…
FastAPI + JWT/OAuth2 Authentication from Scratch: A Complete Guide
FastAPI has become one of the most popular Python frameworks for building modern APIs. It is fast, developer-friendly,…
Go vs Rust for Backend Services in 2026
Compare Go and Rust for backend services in 2026 with practical trade-offs, runnable examples, and a decision framework for production teams.
Build an AI Agent with Python + Ollama + FastAPI
AI agents are the next evolution beyond simple chatbots. An agent doesn’t just answer questions – it decides…
Build a RAG API with FastAPI and PostgreSQL pgvector
Retrieval Augmented Generation (RAG) combines the power of large language models with external knowledge retrieval. Instead of relying…
PostgreSQL Query Performance: EXPLAIN ANALYZE End-to-End
Mastering EXPLAIN ANALYZE completely changed how I approach database performance. Early in my engineering career, I treated slow…
AI Loop Engineering with Python: Building Reliable Agentic Systems with FastAPI and Ollama
AI Loop Engineering with Python is the practice of designing, implementing, and controlling iterative AI systems that can…
ClickHouse with Examples in FastAPI and Golang: A Practical Guide for High-Performance Analytics
If you’re building an application that needs to crunch millions of rows in milliseconds (think analytics dashboards, event…
Keycloak: The Complete Guide to Open-Source Identity and Access Management (with FastAPI & Golang Examples)
If you’ve ever built a web application, you know that authentication and authorization are two of the hardest…
From NLP to LLMs: The Complete Journey Through Language AI
The journey from NLP to LLMs is one of the most fascinating stories in artificial intelligence. In just a few…