Programming Archives

Programming tutorial - IT technology blog

Building a REST API with Axum and Rust: Type-Safe Services, SQLx Database Integration, and Docker Deployment

July 21, 2026

Learn to build a type-safe REST API with Axum and Rust, including SQLx compile-time SQL verification, proper error handling, and a multi-stage Docker deployment that produces minimal production images. Tips from real-world experience building and maintaining Rust services.

Programming

Mastering Zod in TypeScript: Schema Validation, Type Inference, and React Hook Form Integration

July 20, 2026

Zod fills the gap TypeScript can't close: runtime validation that stays in sync with your types automatically. This guide covers schema definition, type inference, React Hook Form integration, and sharing schemas across a full-stack TypeScript project.

Programming

Why We Swapped Express for Fastify: A Six-Month Production Post-Mortem

July 20, 2026

Switching from Express to Fastify cut our latency by 30%. This production review covers the technical benefits of schema-first development and high-performance Node.js architecture.

Programming

JavaScript Debouncing and Throttling: Optimize Event Handling and Reduce API Load

July 14, 2026

Debouncing and throttling are two JavaScript techniques that dramatically reduce unnecessary function calls — especially API requests triggered by user input. This guide walks through practical implementations for search boxes, scroll handlers, and rate-limited APIs, with monitoring tips to verify the improvement.

Programming

Build Modern CLI Tools with Typer and Python: Type Hinting, Validation, and Professional Command Line Interfaces

July 14, 2026

Learn how to build production-ready CLI tools with Typer and Python using type hints for automatic validation, subcommands, and shell autocomplete. Covers real-world patterns including custom validators, testing with CliRunner, and packaging as installable commands — based on production experience replacing fragile argparse scripts.

Programming

Spring AOP Tutorial: Separate Logging and Security Logic from Business Code in Java

July 13, 2026

Spring AOP lets you remove logging, security, and other cross-cutting concerns from your service classes entirely — writing them once as aspects that Spring weaves in automatically. This tutorial covers the core concepts, five advice types, and a practical custom-annotation security pattern with real Java code examples.

Programming

Beyond the Basics: Hardening Microservices with Resilience4j and Spring Boot

June 24, 2026

Don't let one failing microservice take down your entire system. Learn how to implement Resilience4j Circuit Breakers, Retries, and Rate Limiters with production-ready configurations.

Programming

Implementing the Result Pattern in TypeScript: Professional Error Handling Without try-catch

June 23, 2026

The Result Pattern is a type-safe error handling technique that makes failures explicit in TypeScript's type system — no more silent null returns or unpredictable try-catch chains. This step-by-step guide covers setup from scratch, typed error definitions, service layer rewrites, and compiler-enforced exhaustiveness checks.

Programming

Python Profiling with cProfile and VizTracer: Finding and Fixing Performance Bottlenecks in Real Code

June 23, 2026

After two days of optimizing the wrong parts of a slow data pipeline, I started profiling properly with cProfile and VizTracer. This guide shows you exactly how to find and fix Python performance bottlenecks using real code examples — no guesswork required.

Programming

Ditch the Build Step: Why Alpine.js is the Modern jQuery You Actually Need

June 19, 2026

Build interactive, reactive web interfaces without the headache of Node.js or complex build tools. Discover why Alpine.js is the perfect lightweight alternative to React and jQuery.