Notes and case studies from frontend, security, and AI experiments.
Jun 5, 2026
A practical guide to Next.js prompt injection defense for App Router AI features covering input boundaries, retrieved context, tool permissions, output validation, and safer LLM route handlers.
Jun 4, 2026
A practical guide to Next.js AI route security in App Router apps covering prompt validation, rate limiting, server-only keys, timeouts, output handling, and safer AI API routes.
Jun 3, 2026
A practical guide to Next.js file upload security in App Router apps covering upload validation, size limits, MIME checks, storage isolation, signed URLs, and safer route handlers.
Jun 2, 2026
A practical guide to Next.js webhook security in App Router apps covering signature verification, raw body handling, replay protection, idempotency, and safer route handlers.
May 27, 2026
A practical guide to Next.js environment variables security covering public variables, server-only secrets, validation, runtime config, and deployment reviews.
May 26, 2026
A practical Next.js security headers guide for App Router apps covering HSTS, Referrer-Policy, Permissions-Policy, CSP, middleware, and deployment checks.
May 25, 2026
A practical guide to Next.js Content Security Policy in App Router apps covering CSP directives, nonces, security headers, third-party scripts, and rollout testing.
May 22, 2026
A practical guide to Next.js CSRF protection in App Router apps covering Server Actions, route handlers, same-origin checks, CSRF tokens, cookies, and testing.
May 21, 2026
A practical guide to Next.js rate limiting in App Router apps covering route handlers, Server Actions, identity keys, response headers, and abuse-resistant patterns.
May 20, 2026
A practical guide to Next.js Zod validation in App Router apps covering route handlers, Server Actions, form payloads, error responses, and typed validation helpers.
May 19, 2026
A practical guide to Next.js error handling in App Router apps covering error boundaries, not-found states, route handler failures, logging, and user-safe fallbacks.
May 10, 2026
A practical guide to React memo, useMemo, and useCallback covering when memoization helps, when it adds noise, and how to verify performance wins in React and Next.js apps.
May 9, 2026
A practical guide to React Profiler performance debugging using React DevTools Profiler, render tracing, memoization checks, and repeatable fixes for slow React apps.
May 7, 2026
A practical guide to using Next.js bundle analyzer in App Router projects, reading client chunks, finding heavy dependencies, and reducing bundle size safely.
May 6, 2026
A practical guide to creating a Next.js performance budget for App Router apps, covering Core Web Vitals, JavaScript limits, image budgets, scripts, and release checks.
May 5, 2026
A practical guide to Next.js dynamic imports covering App Router code splitting, lazy loading components, SSR tradeoffs, loading states, and bundle review habits.
Apr 30, 2026
A practical guide to Next.js script optimization covering next/script third-party scripts, loading strategies, consent-aware analytics, and Core Web Vitals.
Apr 29, 2026
A practical guide to Next.js font optimization covering next/font in the App Router, font loading strategy, Core Web Vitals, fallbacks, and common performance mistakes.
Apr 28, 2026
A practical guide to Next.js image optimization best practices covering the next/image component, responsive images, priority loading, remote assets, and Core Web Vitals.
Apr 26, 2026
A practical guide to Next.js client components best practices covering the use client directive, server/client boundaries, hydration safety, state, effects, and bundle control.
Apr 25, 2026
A practical guide to React useEffect best practices for Next.js apps covering effect boundaries, cleanup patterns, data fetching tradeoffs, and safer client components.
Apr 24, 2026
Compare React Context vs Zustand with practical examples, performance tradeoffs, and guidance for choosing the right state management pattern in React and Next.js apps.
Apr 24, 2026
Learn how to use TanStack Query with the Next.js App Router for server state, prefetching, hydration, mutations, and cleaner data flows without fragile useEffect fetching.
Apr 22, 2026
A practical guide to React hydration mismatch issues in Next.js covering common causes, debugging steps, and prevention patterns for App Router applications.
Apr 21, 2026
A practical guide to Next.js Server Components patterns covering server/client boundaries, data fetching, composition, security, and performance best practices.
Apr 20, 2026
Learn how React Suspense and Error Boundaries work together to handle async loading states and runtime errors gracefully, with practical code examples for Next.js apps.
Apr 18, 2026
A practical guide to React TypeScript patterns covering component props typing, generics, discriminated unions, utility types, and hooks typing for scalable React applications.
Apr 17, 2026
A practical guide to React state management with Zustand covering store design, Context API comparisons, TypeScript patterns, and best practices for Next.js applications.
Apr 12, 2026
A practical guide to Next.js middleware security covering route gating, matcher design, header hardening, and safe App Router access-control patterns.
Apr 10, 2026
A practical guide to Next.js Server Actions security covering input validation, auth checks, cache-safe mutations, and secure App Router patterns.
Apr 9, 2026
A practical guide to AI coding workflow guardrails covering prompt boundaries, code review checks, security controls, and release-safe patterns for React and Next.js teams.
Apr 8, 2026
Actionable React performance tips to improve rendering speed, reduce bundle cost, and optimize Core Web Vitals in real production applications.
Apr 8, 2026
A practical guide to secure API route patterns in Next.js covering route handler validation, auth checks, rate limiting, and safer error handling for App Router apps.
Apr 6, 2026
A practical guide to React form security best practices covering input validation, sanitization, CSRF defenses, safe error handling, and secure submission flows.
Apr 5, 2026
A practical Next.js caching and revalidation guide covering fetch caching, route segment options, on-demand invalidation, and common App Router mistakes.
Apr 4, 2026
A practical guide to Next.js authentication patterns for App Router apps covering sessions, middleware, route handlers, and common security mistakes.
Apr 3, 2026
A practical Next.js SEO checklist for App Router projects covering the Metadata API, technical SEO defaults, structured data, and internal linking.
Mar 16, 2026
Learn how advanced React hooks like useMemo, useCallback, useRef, and useReducer improve React performance and help teams build scalable React applications.
Mar 16, 2026
Learn how to organize React projects with a scalable React folder structure, feature-based architecture, and practical patterns for production teams.
Mar 16, 2026
A practical React performance optimization guide covering memoization, lazy loading, code splitting, profiling, and repeatable performance improvements for production apps.