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)
RAG Hybrid Search Pattern
Combine keyword (BM25) and semantic (vector) search to improve retrieval accuracy in RAG pipelines....
Blue-Green Deployment Pattern
Run two identical environments and switch traffic between them. Deploy to the idle environment,...
Cache Stampede Prevention Pattern
Prevent thundering herd cache misses with locks, single-flight, and early refresh strategies to...
Canary Release Pattern
Route a small percentage of traffic to the new version while the rest stays on stable. Monitor...
Deployment Ring Pattern
Roll out changes progressively in rings of increasing size. Start with a small group, verify...
Geode Pattern
Distribute data across nodes with partitioning so each node owns a shard. Horizontal scaling...
Graceful Degradation Pattern
Degrade functionality instead of failing when dependencies are unavailable. Serve partial results,...
Read-Through Cache Pattern
A transparent cache layer that intercepts read requests, fetches from the data source on miss, and...
Serverless Event Sourcing Pattern
Store function state as an append-only event log so workflows can be replayed, audited, and...
Serverless Fanout Pattern
Broadcast a single event to multiple independent consumers via SNS, EventBridge, or SQS so each...
Serverless Function Composition Pattern
Chain serverless functions via Step Functions or orchestration layers to build multi-step workflows...
Serverless Throttling Pattern
Handle backpressure in serverless by using SQS, token buckets, and concurrency limits to protect...
Serverless Warm Pool Pattern
Keep Lambda functions warm by sending periodic ping events to reduce cold start latency for...
Shed Load Pattern
Drop requests proactively under extreme load to protect the system. Reject excess traffic before it...
Two-Level Cache Pattern
Combine an L1 in-memory cache with an L2 distributed cache to reduce latency for hot keys while...
Write-Through Cache Pattern
Synchronously write to both cache and backing store so the cache always has the latest data without...
GraphQL Batched Resolver Pattern
Resolve nested GraphQL fields in a single batched request to eliminate N+1 queries and reduce...
GraphQL Connection Pagination Pattern
Implement Relay-style cursor-based pagination with edges, nodes, and pageInfo for stable GraphQL...
GraphQL DataLoader Pattern
Coalesce individual load requests into batched calls with per-request caching to prevent N+1...
GraphQL Error Extension Pattern
Attach structured metadata to GraphQL errors using extension codes for predictable client-side...
GraphQL Interface Polymorphism Pattern
Model polymorphic types with GraphQL interfaces to share field contracts across different object...
GraphQL Schema Stitching Pattern
Merge multiple independent GraphQL schemas into a single unified schema that clients can query as...
Build Stateful AI Agents with LangGraph State Machines
Create multi-step AI agents with LangGraph using state machines, conditional edges, tool calling,...
Fine-Tune and Deploy Text Classifiers with Hugging Face
Fine-tune a pre-trained transformer model for text classification using Hugging Face Trainer,...