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)
Sidecar Pattern: Extend Services with Companion Containers
How to extend services with companion containers for cross-cutting concerns. Covers sidecar containers, shared volumes, health probes, and...
Strangler Fig: Gradually Replace Legacy by Intercepting
How to gradually replace a legacy system by intercepting routes and routing traffic to new services. Covers strangler fig, incremental...
Batch-to-Streaming Bridge
How to bridge batch and streaming pipelines with a data lake. Covers Lambda architecture, Kafka Connect S3 sink, schema alignment, and...
CDC Pattern: Stream Database Changes to Downstream
How to stream database changes to downstream consumers with CDC. Covers log-based CDC, Debezium, Kafka Connect, outbox pattern, and...
Data Lineage Tracking: Track Origin End-to-End
How to track data origin and transformations end-to-end. Covers column-level lineage, OpenLineage, Marquez, metadata injection, and impact...
ETL Extract-Transform-Load
How to build ETL pipelines with extract, transform, and load stages. Covers staging tables, incremental extraction, idempotent loads, and...
Idempotent Load: Re-run Data Loads Safely Without Duplicates
How to re-run data loads safely without duplicates. Covers deduplication keys, MERGE upserts, load IDs, partition overwrite, and...
Schema Registry Evolution
How to manage schema versions for streaming pipelines with a schema registry. Covers Avro, backward compatibility, forward compatibility,...
Container-Presenter: Separate Data Logic from Rendering
How to separate data-fetching logic from rendering in React using the container-presenter pattern. Covers hooks migration, testing...
CSS Architecture: Utility-First with Component-Scoped Layers
How to organize CSS with utility-first classes and component-scoped layers. Covers Tailwind CSS, CSS layers, BEM, CSS modules, and design...
Custom Hook Composition
How to compose reusable logic with custom React hooks. Covers hook composition patterns, dependency arrays, context integration, and...
Islands Architecture
How to ship interactivity only where needed using islands architecture. Covers Astro islands, partial hydration, React islands, and...
Optimistic Update: Update UI Immediately, Reconcile on
How to update UI immediately and reconcile on server response in React. Covers rollback on error, conflict resolution, and React Query...
Progressive Enhancement
How to build a functional HTML baseline and progressively enhance with JavaScript. Covers core functionality, feature detection, graceful...
State Machine UI: Finite State Machines for UI
How to model UI state transitions with finite state machines in React. Covers XState, statecharts, guarded transitions, and preventing...
Suspense Boundary: Declarative Loading States with React
How to use React Suspense boundaries for declarative loading states. Covers data fetching, streaming SSR, nested boundaries, and error...
Circuit Breaker with Monitoring
How to expose circuit breaker state as metrics for observability. Covers Prometheus integration, alerting rules, dashboards, and state...
Correlation ID: Trace Requests Across Distributed Services
How to propagate correlation IDs across service boundaries for end-to-end request tracing. Covers HTTP headers, message queues, and logging...
Distributed Tracing: Propagate Trace Context Across Services
How to propagate trace context across service boundaries with OpenTelemetry. Covers span creation, context propagation, sampling, and trace...
Health Check Pattern: Expose Liveness and Readiness Probes
How to implement liveness and readiness probes for container orchestration. Covers Kubernetes probes, dependency checks, graceful...
Metrics Aggregation: Collect, Tag
How to collect, tag, and aggregate business metrics for observability. Covers Prometheus, OpenTelemetry, custom metrics, histograms, and...
Structured Logging: Emit JSON Logs with Consistent Fields
How to emit structured JSON logs with consistent fields for searchability. Covers Python structlog, Winston, Serilog, log levels, and log...
Bulkhead Pattern: Isolate Resources to Limit Blast Radius
How to isolate resources per service to limit blast radius. Covers thread pool isolation, connection pool partitioning, semaphore-based...
Circuit Breaker Half-Open
How to test service recovery with half-open circuit breaker state transitions. Covers closed, open, half-open states, trial requests, and...