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)
CI/CD Pipeline Security Template
A template for securing build and deployment pipelines against credential leaks, tampering, supply...
On-Call Runbook Template
A template documenting common alerts and step-by-step response procedures for on-call engineers.
Frontend Performance Budget Template
A template for defining JS, CSS, image, and font budgets per route — with a method for picking the...
Cache Invalidation Pattern
Strategies for keeping cached data fresh: TTL expiration, explicit invalidation, write-through, and...
Write-Behind Cache Pattern
Write to the cache synchronously and persist to the database asynchronously for high-throughput...
AI LLM Incident Response Runbook
Operational runbook for LLM production incidents: hallucination events, model outages, cost spikes,...
Data Migration Runbook Template with Rollback Steps
Use this data migration runbook template to plan safe migrations. Includes pre-migration checks,...
Weekly Ops Review Template
A template for summarizing incidents, costs, performance, and action items in weekly operations...
Serverless Cost Estimation Template
Template for estimating serverless costs per workload: invocation pricing, GB-second math, data...
Apply Prompt Engineering: What Works
How to write useful prompts for LLMs using role assignment, few-shot examples, chain-of-thought...
AssertJ Soft Assertions in JUnit5: Collect All Failures
How to use AssertJ soft assertions in JUnit5 to collect multiple assertion failures in a single...
Compute Resource Consolidation Pattern
Combine workloads into fewer compute resources to reduce cost, improve utilization, and simplify...
Blackboard Pattern
A shared knowledge space where independent specialized modules collaborate to solve complex...
CSS Architecture: Utility-First with Component-Scoped Layers
How to organize CSS with utility-first classes and component-scoped layers. Covers Tailwind CSS,...
Scheduler Agent Supervisor Pattern
Coordinate resilient job scheduling with a supervisor that monitors agents, restarts failures, and...
API Lifecycle Management Template
A copy-paste checklist template for managing API deprecation, versioning transitions, and safe...
Deployment Rollback Runbook
Runbook for rolling back failed deployments: triggers, kubectl/Helm/ArgoCD commands, database...
Security Incident Response Template
A template for security incident response covering detection, classification, containment,...
Platform Engineering — Building Internal Developer Platforms
A practical guide to platform engineering: IDP concepts, golden paths, self-service infrastructure,...
Technical Documentation Strategy: Docs as Code
A practical guide to treating documentation as code: versioning, review workflows, structure, and...
Blameless Postmortems: Learning from Incidents Without Blame
A practical guide to blameless postmortems: timelines, root causes, follow-ups, and building a...
Inbox Pattern
Use a dedicated inbox table or queue to record incoming events or requests, ensuring reliable...
Static Content Hosting Pattern
Deploy static files to a dedicated content delivery network or object storage to offload origin...
Database Indexing Strategies — From B-Trees to BRIN
A practical guide to database indexes: B-Trees, Hash, GIN, GiST, BRIN, and partial indexes. Learn...