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)
GraphQL Federation in Production
Run federated GraphQL in production with confidence. Covers subgraph composition, gateway...
Complete Guide to GraphQL Schema Design
Design GraphQL schemas for evolution, performance, and maintainability. Covers type design,...
Complete Guide to GraphQL Security
Secure GraphQL APIs against introspection leaks, query depth attacks, cost-based DoS, batching...
Complete Guide to GraphQL Testing
Test GraphQL APIs at every layer: unit tests for resolvers, integration tests for schema, E2E tests...
Complete Guide to Application-Level Caching
Implement in-memory, distributed, and hybrid caches at the application layer. Covers LRU caches,...
Complete Guide to Cache Invalidation
Master cache invalidation strategies: TTL expiration, event-driven invalidation, versioned keys,...
Complete Guide to CDN Caching Strategy
Design CDN caching for web applications and APIs. Covers edge caching, cache keys, cache headers,...
Complete Guide to Redis Caching Strategies
Master Redis caching with cache-aside, read-through, write-through, write-behind, and refresh-ahead...
Complete Guide to Go Concurrency
Master Go concurrency in production. Covers goroutines, channels, context, select, sync primitives,...
Complete Guide to Java Concurrency
Master Java concurrency in production. Covers threads, locks, CompletableFuture, virtual threads,...
Complete Guide to Python Asyncio in Production
Run Python asyncio in production with confidence. Covers event loops, task management, debugging,...
Complete Guide to Database Sharding
Master database sharding. Covers range-based, hash-based, and directory-based partitioning...
Complete Guide to MongoDB Indexing
Master MongoDB indexing. Covers single field, compound, text, geospatial, TTL, wildcard, hashed...
Complete Guide to PostgreSQL Replication
Master PostgreSQL replication. Covers streaming replication, logical replication, cascading...
Complete Guide to Redis in Production
Run Redis in production. Covers persistence (RDB, AOF), clustering, sentinel for HA, failover...
Complete Guide to SQL Query Optimization
Optimize SQL queries. Covers EXPLAIN plan analysis, index strategies, join optimization, N+1 query...
Complete Guide to Docker in Production
Run Docker containers in production with confidence. Covers multi-stage builds, distroless images,...
Complete Guide to GitOps in Production
Implement GitOps with ArgoCD and Flux. Covers declarative infrastructure, drift reconciliation,...
Complete Guide to Kubernetes Networking
Master Kubernetes networking. Covers Services, Ingress, NetworkPolicies, CNI plugins, DNS, service...
Complete Guide to Monitoring and Alerting
Build a production monitoring stack. Covers Prometheus, Grafana, AlertManager, metrics...
Complete Guide to Terraform in Production
Manage infrastructure as code with Terraform in production. Covers modules, state management,...
Complete Guide to CSS Grid and Flexbox
Master modern CSS layout with Grid and Flexbox. Covers grid templates, areas, subgrid, responsive...
Complete Guide to React 19 Features
Master React 19 features. Covers server components, use() hook, actions, form actions,...
Complete Guide to Web Performance and Core Web Vitals
Optimize Core Web Vitals. Covers LCP, INP, CLS measurement and improvement, image optimization,...