Patryk Sadkowski
Technical Blog

Insights & Learnings

Sharing knowledge from enterprise development, modern technologies, and lessons learned while building scalable applications. Deep dives into performance optimization, architecture decisions, and industry best practices.

Featured Article

Scaling React Applications - Performance Optimization Guide
Performance
8 min read
React Performance Optimization Enterprise

Scaling React Applications: 8x Performance Optimization in Production

March 15, 2024 8 min read Performance

How I optimized a React application at YZ Systems to achieve 8x performance improvements, reducing load times from 40 seconds to 5 seconds. A deep dive into code splitting, lazy loading, memoization, and bundle optimization techniques that work in real enterprise environments.

What You'll Learn

  • Advanced React optimization techniques
  • Bundle analysis and code splitting strategies
  • Memory management and rendering optimization
  • Real-world enterprise case study
Read Full Article

Recent Articles

Building Scalable APIs with NestJS
Backend
March 10, 2024 6 min read

Building Scalable APIs with NestJS: Enterprise Patterns

Architectural patterns and best practices for building enterprise-grade APIs that can handle millions of requests while maintaining code quality.

NestJS TypeScript Architecture
Read More →
Docker Multi-Stage Builds
DevOps
March 5, 2024 5 min read

Docker Multi-Stage Builds: Optimizing Container Images

How to reduce Docker image sizes by 80% using multi-stage builds, improving deployment speed and security in production environments.

Docker DevOps Optimization
Read More →
Database Query Optimization
Database
February 28, 2024 7 min read

PostgreSQL Query Optimization: From Slow to Fast

Step-by-step guide to identifying and fixing slow database queries, with real examples from enterprise applications handling millions of records.

PostgreSQL SQL Performance
Read More →
TypeScript Best Practices
Frontend
February 22, 2024 4 min read

TypeScript Best Practices for Large Codebases

Essential TypeScript patterns and configurations that prevent bugs and improve developer experience in enterprise applications.

TypeScript Best Practices Enterprise
Read More →
CI/CD Pipeline Optimization
DevOps
February 15, 2024 6 min read

Optimizing CI/CD Pipelines: From 20 to 3 Minutes

How I reduced build and deployment times by 85% using pipeline optimization techniques, caching strategies, and parallel execution.

CI/CD Azure DevOps Optimization
Read More →
Testing Strategies
Testing
February 8, 2024 5 min read

Testing Strategies: Unit, Integration & E2E with Playwright

Comprehensive testing strategy that prevented production bugs and improved code quality across multiple enterprise projects.

Testing Playwright JEST
Read More →

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Let's discuss your project and explore how my full-stack expertise can help you build scalable, innovative solutions that deliver real business value. From concept to deployment, I'm here to make it happen.

Available for freelance projects • Based in Poland • Fluent in English