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)
Implement RBAC
How to implement role-based access control with hierarchical roles, permission grants, and...
Implement SSO with SAML
How to implement SAML 2.0 single sign-on as a Service Provider with XML signature verification, IdP...
Seed Database
How to seed databases with realistic data for development, testing, and staging environments using...
Ansible Playbook for Server Configuration
How to write and run Ansible playbooks for provisioning, configuring, and managing servers with...
Setup CI with GitLab Pipelines
How to configure GitLab CI/CD pipelines for testing, building, and deploying applications using...
Setup SSL Certificates with Let's Encrypt
How to obtain, install, and auto-renew SSL certificates using Certbot with Nginx, Apache, and...
Bash Loop Over Files
How to safely loop over files and directories in Bash, handling spaces, globs, and large file lists...
Bash Parallel Execution
How to run shell commands in parallel with xargs, GNU parallel, and Bash background jobs while...
Bash Text Processing
How to build capable text processing pipelines with grep, sed, awk, cut, sort, uniq, and tr for log...
Generate Temporary Files
How to create temporary files and directories safely with automatic cleanup across Python, Node.js,...
Rotate Log Files
How to implement log rotation by size, date, and count to prevent disk exhaustion across Python,...
Setup Test Fixtures
How to manage test fixtures with factory patterns, setup/teardown hooks, and deterministic data for...
Active Record Pattern
Wrap a database table or view in a class where an instance is tied to a single row, and the class...
Aggregate Pattern
Encapsulate a cluster of domain objects treated as a single unit for data changes. An Aggregate...
Back-Pressure Pattern
Prevent upstream systems from overwhelming downstream consumers by propagating flow-control signals...
Backend for Frontend (BFF) Pattern
Create dedicated backend services tailored to the specific needs of each frontend client type,...
Business Delegate Pattern
Reduce coupling between presentation and business tiers by introducing an intermediary that handles...
Claim Check Pattern
Store large payloads in external storage and pass only a lightweight reference token through the...
Compensating Transaction Pattern
Undo the effects of a completed transaction by executing a counter-operation, enabling eventual...
Content Delivery Network (CDN) Pattern
Distribute static and live content through geographically dispersed edge servers to reduce latency,...
Data Access Object (DAO) Pattern
Abstract and encapsulate all access to a data source by exposing a clean interface while hiding...
Data Mapper Pattern
Separate in-memory domain objects from the database by delegating persistence to a dedicated mapper...
Database per Service Pattern
Give each microservice its own private database to ensure loose coupling, independent deployment,...
Domain Event Pattern
Capture and publish major occurrences within a domain model to decouple side effects from core...