Tech Blog
Frontend deep dives, architecture design, performance optimization, and development insights
Learn Regex From Scratch: Master Text Processing in 30 Minutes
A beginner-friendly regex tutorial covering basic syntax to advanced lookahead assertions, with practical recipes and online testing tools.
Redis Distributed Lock: 5 Patterns from Redlock to Production
From SET NX EX to Redisson and the Redlock algorithm: lock renewal, fairness, and deadlock prevention with Lua scripts for distributed concurrency control
Redis High Availability Cluster: A Practical Guide
From standalone to sentinel to cluster — master Redis HA architecture deployment, data migration, caching strategies, and production operations
React Server Components: RSC Architecture on the ToolsKu Site
Rendering model, Server vs Client boundaries, data fetching—and how ToolsKu uses Next.js App Router RSC for near-zero-JS first paint.
React 19 New Features: Actions, use() & Server Components
An in-depth look at React 19's core new features, including Form Actions, the use() Hook, improved Server Components, and React Compiler optimizations.
React Native New Architecture: Fabric Renderer & TurboModules
From Fabric rendering pipeline to TurboModules JSI bridging, covering complete production-grade React Native new architecture migration
React Server Components: Next-Gen React Architecture
From RSC core principles to production practice: Server vs Client components, use client/use server directives, data fetching, and Streaming + Suspense.
React Concurrent Rendering: useTransition & useDeferredValue
A deep dive into React concurrent rendering APIs—useTransition, useDeferredValue, and Suspense—covering list filtering, async loading, and streaming SSR.
12 Business Uses for QR Codes: From Payments to Analytics
QR codes go beyond payments. Explore 12 real business applications with tracking tips, design guidance, and practical examples.
RAG Production Guide 2026: Enterprise Knowledge AI in Practice
A guide to designing and implementing RAG systems in 2026, covering architecture principles, vector database selection, and embedding strategies.
Python uv Package Manager 2026: The 10x Faster pip Replacement
A guide to Python uv package manager: ultra-fast dependency resolution, virtual environment management, migration from pip/poetry, and CI/Docker integration.
Python Web Scraping: Legal, Reliable & Maintainable Collection
A practical guide to Python web scraping covering compliance, stable parsers, polite rate limits, Scrapy pipelines, and Playwright for dynamic pages.
RAG Evolution: From Naive RAG to Agentic RAG in 3 Generations
An in-depth analysis of RAG evolution across three generations, covering embedding model selection, vector database comparison, and hybrid retrieval.
Python RAG + Knowledge Graph: 6 Production GraphRAG Patterns
From entity-relation extraction to graph-vector hybrid retrieval — 6 production-grade GraphRAG patterns covering Neo4j storage and end-to-end pipelines
Python SSE Streaming LLM Output: Server-Sent Events to Chat
From SSE protocol principles to FastAPI/Flask streaming implementation, LLM streaming output to error recovery and backpressure control
Python RAG Optimization: RAGAS Evaluation to +40% Accuracy
From the RAGAS evaluation framework to chunk optimization, retrieval reranking, and hybrid search — 6 RAG optimization strategies to boost accuracy by 40%
Python RAG Hybrid Search: 5 Strategies for +40% Accuracy
From vector retrieval to BM25 keyword search, RRF fusion to Cross-Encoder reranking—complete production guide to RAG hybrid search
Python Pytest Async Testing: pytest-asyncio Guide 2026
A guide to Python async testing with pytest-asyncio: configuration and patterns, async fixture injection, and mocking async functions and APIs.
Python RAG Application Development: Principles to Production
A deep dive into RAG core principles, vector embeddings, chunking strategies, vector database selection, and production deployment with Python code examples.
Pydantic AI Agent Development: 5 Type-Safe Production Patterns
From dependency injection to structured output, tool registration to streaming responses — a complete guide to Pydantic AI Agent development