Programming Tutorials

Hey devs 👋 I recently redesigned my portfolio from scratch with a high focus on UI, custom CSS and vanilla React. 🔗 Check it out: Portfolio

If you've ever tried to render HTML inside a Rust application, you know the pain. Maybe you needed a lightweight browser panel in a desktop app, or yo

When I first heard of Wikimedia, the first thing that came to my mind was Wikipedia. However,as time went by, I understood that behind the scenes, Wi

Every API has an auth problem. Usually it's one: how do you verify that the person calling your API is allowed to? Building MyAirports — a real-time

Your agent authenticates with an API key. The external service knows who is calling. But it has no idea what the agent is actually allowed to do. Thi

CLI documentation has a trust problem. Users read your examples, try to reproduce them, and get different output. Screenshots go stale the moment a fl

Mastering Spring Batch Job Execution Context and Job Parameters A comprehensive tutorial on Spring Batch job execution context and job par

Last week my research agent failed at step 15 of a 30-step run. Langfuse showed me exactly where it broke. The writer sub-agent hallucinated, citing a

The problem every stock-research agent has If you've built an AI agent that answers questions like 'what usually happens after a breakout l

Building a content writer using Groq's free tier was a surprisingly enlightening experience. I initially approached Groq with some skepticism, partly

Why these three If you've shipped an AI agent that answers stock questions, you've hit a predictable set of failure modes: it invents base

Why this matters for agent developers If you're building an AI agent that calls Chart Library, you're trusting our historical base rates. I

I recently released an update to x509Lab (a completely browser-based visual certificate chain builder) to support Ed25519 key generation and signing.

QR codes are widely used across modern applications for sharing information quickly and connecting users with digital services. From payments to authe

Zero application code for a REST API — semantic navigation with LinkLab The starting point At the beginning of this project, I

The industry is currently building "Agentic AI" on top of a foundational flaw: We are taking trillion-parameter probabilistic models and wiring them d

Zero-Allocation PII Redaction in Go: Processing 780MB of Logs in Under 3 Minutes Every team feeding logs to LLMs has the same dirty secret:

Event-Driven Architecture for Crypto Trading Bots: A Practical Guide Building a trading bot that reacts to market movements in real-time re

Skeleton loaders are one of those things that sound simple until you actually build them. You end up hand-coding a second layout with gray blocks that

The Fastest Way to Build a Native Telegram Bot: A Technical Deep Dive Building a Telegram bot natively (without third-party frameworks) off