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In-depth articles on AI, web development, cloud native, and indie hacking.

@admin·13 min read·Web Development

Practical React Performance Optimization

Most React slowdowns come from unnecessary re-renders. Learn the right order: measure with Profiler, then optimize; use memo/useMemo/useCallback correctly; improve keys and lists, split state, use concurrent features, and avoid premature optimization.

#Next.js #React♥ 220 comments
@admin·11 min read·Web Development

Tailwind CSS Engineering Practices

Tailwind is fast for small projects but can become chaotic at scale through duplicated classes and drifting design tokens. This guide covers tokenized design-system configuration, component abstraction with React, @apply, and cva, class hygiene, Figma alignment, dark mode, and responsive design.

#React #TypeScript♥ 230 comments
@admin·9 min read·Web Development

Core Web Vitals and Frontend Performance Optimization

Core Web Vitals are more than SEO metrics; they quantify real user experience. This article explains what LCP, INP, and CLS measure, why they matter, how to measure them with Lighthouse, real-user data, and PSI, and how to improve images, fonts, JavaScript, layout stability, and interaction responsiveness.

#Next.js #React♥ 240 comments
@admin·9 min read·Cloud Native

Docker Multi-Stage Builds and Image Optimization

A Node.js image can shrink from 1.2GB to 150MB with a few fundamentals, not magic. This guide covers multi-stage builds, separating build and runtime stages, choosing distroless or Alpine base images, .dockerignore, layer-cache reuse, and Next.js standalone for smaller, faster, safer images.

#DevOps♥ 250 comments
@admin·5 min read·Agent Engineering

Agent Tool Capability Catalog: Paginated Discovery, Generation Freezing, and Invocation Admission

A successfully fetched tool list does not mean the Agent sees a complete and still-authorized capability set. This article combines paginated discovery, descriptor validation, policy filtering, and invocation binding into a versioned catalog generation that blocks half-loaded catalogs and late-arriving changes from reaching the execution plane.

#AI Agent #MCP #DevOps♥ 230 comments
@admin·10 min read·Cloud Native

Kubernetes from Basics to Practice: Core Concepts in Plain English

K8s documentation can feel impenetrable, but its core concepts are not complicated. This guide explains in plain English what Pod, Deployment, Service, and Ingress do, how they work together to run a web application, hands-on practice with kind/minikube, and when you really do or do not need K8s.

#DevOps♥ 260 comments
@admin·12 min read·Cloud Native

GitHub Actions CI/CD in Practice

GitHub Actions is one of the easiest CI/CD platforms for developers to adopt, but using it well takes care. This article covers workflow structure, triggers, jobs, steps, matrices, caching, artifacts, secrets, concurrency, costs, and a practical "frontend + backend + deployment" workflow for fast, reliable, quota-efficient CI.

#DevOps♥ 270 comments