Mathias Paulenko
Software Engineer & Founder of StackPractices
Mathias Paulenko
Software Engineer
Software engineer with 12+ years of experience building production systems across Python, JavaScript, React, and DevOps. I have contributed to enterprise projects spanning CI/CD pipelines, API design, cloud infrastructure, and full-stack development.
StackPractices is my personal project, born from a simple belief: great documentation should be copy-paste ready. Every recipe, pattern, and guide on this site is designed to save you time and help you ship faster.
Published Works (1032)
Load Balancing with HAProxy and Health Checks
Configure HAProxy as a high-performance load balancer with active health checks, sticky sessions,...
Provision an AWS VPC with Terraform
How to use Terraform to provision a production-ready AWS VPC with public and private subnets, NAT...
Event Streaming with Apache Kafka and Node.js
Build growth-ready event-driven systems using Apache Kafka with producers, consumers, consumer...
Load Testing APIs with k6 and Threshold-Based Assertions
How to write and run load tests with k6 to measure API performance, validate SLOs, and identify...
SPA Performance: Code Splitting and Lazy Loading
Improve single-page application load times by splitting bundles at route and component level,...
Schema-Based Data Validation with Zod in TypeScript
Validate and sanitize incoming data using Zod schemas with TypeScript inference, custom...
Implement OAuth 2.0 PKCE for Single-Page Applications
How to implement the OAuth 2.0 PKCE flow in single-page applications to securely authenticate users...
Live Database Credentials with HashiCorp Vault
How to use HashiCorp Vault to generate short-lived database credentials, eliminating hardcoded...
Abstract Factory for Cross-Platform UI Component Families
Create families of related objects without specifying concrete classes, enabling platform-specific...
Adapter Pattern for Integrating External REST APIs
Use the Adapter pattern to normalize responses from external REST APIs into a consistent internal...
Bridge Pattern for Decoupling UI Components from Themes
Separate an abstraction from its implementation so both can vary independently using the Bridge...
Builder Pattern for Complex Configuration Objects
Use the Builder pattern to construct complex configuration objects with optional parameters and...
Chain of Responsibility for Request Processing Middleware
Pass requests along a chain of handlers where each handler decides whether to process the request...
Command Pattern with Undo/Redo in TypeScript
Implement the Command pattern to encapsulate requests as objects, enabling undo/redo operations,...
Composite Pattern for UI Component Trees in React
Use the Composite pattern to compose objects into tree structures, letting clients treat individual...
Dependency Injection Container in TypeScript
Build a lightweight DI container that resolves class dependencies automatically, enabling testable,...
Flyweight Pattern for Efficient Large-Scale Object Sharing
Use the Flyweight pattern to minimize memory usage by sharing as much data as possible between...
Mediator Pattern for Loose Component Coupling in
Reduce chaotic dependencies between UI components by introducing a mediator that centralizes...
Memento Pattern for State Snapshot and Restoration
Capture and externalize an object's internal state without violating encapsulation, enabling undo,...
MVC Pattern in Modern Frontend Applications
Apply the Model-View-Controller pattern to React and Vue applications to separate data, UI, and...
Prototype Pattern for Object Cloning and Configuration
Create new objects by copying existing ones, allowing pre-configured templates and avoiding...
Proxy Pattern for API Response Caching
How to implement a caching proxy that intercepts API calls and stores responses to reduce latency...
SOLID Principles in TypeScript with Practical Examples
Apply the five SOLID principles to TypeScript code to improve maintainability, testability, and...
Visitor Pattern for Extensible Operations on Object
Separate algorithms from the objects they operate on, allowing new operations to be added without...