Mathias Paulenko

A structured bug report template to help teams reproduce, triage, and resolve defects faster with clear reproduction steps and expected...

A database migration runbook template for executing schema changes safely with rollback procedures, verification steps, and communication...

A template for auditing third-party dependencies: license compliance, security vulnerabilities, maintenance health, and supply chain risk.

A disaster recovery plan template for documenting RTO/RPO targets, failover procedures, and recovery runbooks that minimize downtime during...

A template for documenting how to set up local development, staging, and production environments consistently and reproducibly.

A structured capability request template to help teams evaluate, prioritize, and implement new capabilities with clear user value and...

A penetration test report template for documenting findings, risk ratings, reproduction steps, and remediation guidance for security...

A checklist template for verifying deployments: health checks, smoke tests, metric validation, and rollback readiness before declaring...

A release notes template that communicates changes clearly to users, operators, and stakeholders with categories, upgrade instructions, and...

An SLO document template that defines reliability targets, error budgets, and escalation policies for services and platforms.

A user story template that connects user needs to implementation with clear acceptance criteria, definition of done, and INVEST principles.

Learn DDD fundamentals: bounded contexts, entities, value objects, aggregates, and how to model complex business domains in code.

A practical guide to event-driven architecture: events vs commands, message brokers, patterns like CQRS and Saga, and when to choose async...

A practical guide to microservices: benefits, trade-offs, common patterns, and when to choose them over monoliths. Covers decomposition...

A practical guide to decomposing monoliths: strangler fig, branch by abstraction, and incremental extraction patterns that reduce risk and...

A practical guide to system design interviews: scalability, databases, caching, load balancing, microservices, and how to structure your...

A practical guide to the CAP theorem: consistency, availability, and partition tolerance. Learn how to choose the right trade-offs for your...

A practical guide to horizontal partitioning (sharding), vertical partitioning, and range vs hash strategies. Scale databases without...

A practical guide to choosing the right NoSQL database. Compare document, key-value, wide-column, and graph stores with selection criteria...

A practical guide to optimizing SQL queries: indexing strategies, query rewriting, EXPLAIN plan analysis, and common anti-patterns to avoid.

A practical guide to clean code: meaningful names, short functions, DRY, SOLID foundations, and habits that make codebases easier to read...

A practical guide to useful code reviews: how to write reviewable code, give constructive feedback, and keep reviews fast and focused.

Learn the five SOLID principles with practical code examples: Single Responsibility, Open/Closed, Liskov Substitution, Interface...

A practical guide to deployment strategies: blue-green, canary, rolling, and feature flags. Minimize risk and rollback time when releasing...