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 (1008)
Correlation ID: Trace Requests Across Distributed Services
How to propagate correlation IDs across service boundaries for end-to-end request tracing. Covers...
Distributed Tracing: Propagate Trace Context Across Services
How to propagate trace context across service boundaries with OpenTelemetry. Covers span creation,...
Retry with Jitter: Exponential Backoff and Random Jitter
How to retry failed operations with exponential backoff and random jitter. Covers full jitter,...
Mock Server: Stand Up a Mock Server for Integration Test
How to use mock servers to isolate integration tests from external dependencies. Covers WireMock,...
Parameterized Test: Run the Same Logic Across Multiple
How to write parameterized tests to verify the same logic across multiple inputs. Covers pytest...
Test Double: Replace Dependencies with Stubs, Spies, Fakes
How to use test doubles to isolate units under test. Covers stubs, spies, fakes, mocks, and dummy...
Data Governance Policy Template
A template for data classification, retention, access control, privacy, and compliance policies...
Data Pipeline Design Document Template
A template for documenting data pipeline sources, transformations, sinks, scheduling, error...
ETL Job Runbook Template
A runbook for operating, monitoring, and troubleshooting ETL jobs: startup, shutdown, health...
Helm Chart Review Checklist
A checklist for reviewing Helm charts covering values, templates, security, resource limits,...
Terraform State Management Policy
A policy for managing Terraform state files: backend configuration, locking, isolation, access...
Component API Documentation Template
A template for documenting UI component APIs: props, events, slots, methods, accessibility, and...
Incident Response Plan Template
A template for incident response covering severity classification, roles, detection, containment,...
Penetration Test Report Template
A template for penetration test reports covering scope, methodology, findings, severity ratings,...
Security Audit Checklist
A checklist for security audits covering network security, application security, data protection,...
Vulnerability Management Process Template
A template for vulnerability management covering discovery, triage, prioritization, remediation...
Bug Reproduction Steps Template
A template for writing minimal, reliable bug reproduction steps that help developers reproduce and...
Regression Test Checklist
A checklist for verifying existing functionality after changes: pre-deploy checks, post-deploy...
Strangler Fig Migration: Incremental Legacy Replacement
Master the strangler fig pattern for incremental legacy migration: routing layer, feature flags,...
Refactoring Guide: Extract Method, Replace Conditional,
Master refactoring techniques: extract method, replace conditional with polymorphism, move...
Technical Debt: Track, Prioritize, Pay Down
Master technical debt management: identify debt types, track with debt registers, prioritize using...
Complete Guide to React Server Components: RSC Architecture
Master React Server Components: RSC architecture, data loading, streaming, server actions, and...
React State Management: Context, Zustand, TanStack Query
Master React state management: Context API, Zustand, Jotai, and TanStack Query for server state....
Complete Guide to TypeScript Advanced Types
Master TypeScript advanced types: conditional types, mapped types, template literal types, infer,...