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)
Parse PDF Files
How to extract text and metadata from PDF files in Python, Java, and JavaScript.
Parse XML Files
How to parse XML documents in Python, Java, and JavaScript with practical code examples.
Serialize and Deserialize Data
How to serialize and deserialize data in JSON, XML, and YAML across Python, Java, and JavaScript.
Truncate Text
How to truncate text with ellipsis and word boundaries in Python, Java, and JavaScript.
Validate JSON Schema
How to validate JSON data against schemas in Python, Java, and JavaScript.
Connect to PostgreSQL
How to connect to PostgreSQL databases in Python, JavaScript, and Java.
Connect to Redis
How to connect to Redis and perform basic operations in Python, JavaScript, and Java.
Compress and Decompress Files
How to handle ZIP, GZIP, and TAR archives programmatically.
Write Large Files
How to write large files efficiently using buffered and streaming output.
Escape HTML Entities
How to escape HTML entities to prevent XSS attacks in Python, Java, and JavaScript.
Sanitize User Input
How to sanitize and validate user input in Python, Java, and JavaScript to prevent injection...
Dependency Injection
Implement dependency injection to write testable, decoupled code across languages and frameworks.
Multi-Tenancy Architecture
Design multi-tenant applications with shared or isolated databases, tenant-aware routing, and data...
Retry with Exponential Backoff
Implement resilient retry strategies with exponential backoff, jitter, and circuit breaker...
Service Discovery
Implement service discovery with health checks, DNS-based resolution, and service registries for...
Workflow Engines
Orchestrate complex business processes with workflow engines, state machines, and long-running task...
Database Replication
Set up and manage database replication for high availability, read scaling, and disaster recovery...
Database Schema Evolution
Evolve database schemas safely with backward-compatible changes, versioned migrations, and online...
Blue-Green Deployment Recipe
Deploy with zero downtime using blue-green environments, instant traffic switching, and automated...
Chaos Engineering
Build resilient systems by intentionally injecting failures and observing how your distributed...