Debugging Hydration Mismatches in React and Next.js
Debugging hydration mismatches in React and Next.js, including common causes, repeatable fixes, and how to stop server and client renders drifting apart.
Articles
Performance
Website performance starts with measuring the experience people actually receive, not chasing a Lighthouse score in isolation. These articles look at rendering behaviour and production bottlenecks, then at the engineering decisions that stop the same regression returning with the next feature or content release.
Debugging Hydration Mismatches in React and Next.js. 
Reducing Headless CMS Image Bandwidth with a Storage Mirror. Reducing Headless CMS Image Bandwidth with a Storage Mirror
Reduce headless CMS image bandwidth and quota risk with a storage mirror: sync changed assets, reuse originals, and keep Next.js image delivery off your CMS.
HTTP Cache Validation with ETag and Last-Modified. HTTP Cache Validation with
ETagandLast-ModifiedETagandLast-Modifieddrive conditional HTTP requests and 304 responses. See how precedence, weak validators, CDNs, and cache policy affect revalidation.
Gatsby Build Times are Slow: Fix or Migrate? Gatsby Build Times are Slow: Fix or Migrate?
Slow Gatsby builds need a clear choice: optimise plugins, data, and images in place, or move to Next.js when publishing and cache limits justify it.
GTM, Consent Tools, and Core Web Vitals: How to Audit Third‑Party Script Cost. GTM, Consent Tools, and Core Web Vitals: How to Audit Third‑Party Script Cost
Audit third‑party script cost across GTM, consent tools, analytics, experimentation, and personalisation, without breaking measurement or business workflows.
SEO Best Practices in Next.js: Improving Core Web Vitals. SEO Best Practices in Next.js: Improving Core Web Vitals
SEO best practices in Next.js, with a sharper focus on Core Web Vitals, stable layouts, lighter bundles, metadata, and real user measurement for search.
Why Your Next.js App Router Page is Stale: Cache Tags, Revalidation, and CMS Publishing. Why Your Next.js App Router Page is Stale: Cache Tags, Revalidation, and CMS Publishing
Debug stale Next.js App Router pages with cache tags, revalidation paths, CMS webhooks, preview freshness, dependency graphs, and simpler cache contracts.
Core Web Vitals Got Worse After a Redesign. Core Web Vitals Got Worse After a Redesign
How to isolate Core Web Vitals regressions after a redesign, covering LCP, INP, CLS, templates, scripts, images, fonts, data, and release evidence.
Using Angular Signals for Performance Optimisation. Using Angular Signals for Performance Optimisation
Use Angular signals for performance optimisation with derived state, computed values, OnPush, effects, RxJS interop, and measuring whether work improved.
Why Next.js Builds Time Out on Vercel. Why Next.js Builds Time Out on Vercel
Debug Next.js build timeouts on Vercel by checking route generation, CMS data fan‑out, memory pressure, image work, caching, logs, and platform limits.
Memoisation in JavaScript: Optimising Function Calls. Memoisation in JavaScript: Optimising Function Calls
Memoisation helps JavaScript functions run faster by caching previous results. Here's a clear guide on how and when to use memoisation effectively.
Caching Across React, Next.js and Serverless Applications. Caching Across React, Next.js and Serverless Applications
Compare client‑side React caching, Next.js SSG, ISR and SSR caching, and Redis‑backed caches for reliable serverless data fetching and persistence.
Greener Software is Mostly Less Waste. Greener Software is Mostly Less Waste
Greener software starts with engineering discipline: lighter pages, fewer wasted requests, better caching, leaner CI, and deliberate use of AI compute.
Understanding Tail Call Optimisation in JavaScript. Understanding Tail Call Optimisation in JavaScript
Tail call optimisation in JavaScript, why it matters conceptually, and why patchy engine support still makes it unreliable for production recursion.
Optimising Performance in React with useMemo and useCallback. Optimising Performance in React with
useMemoanduseCallbackOptimise React performance with useMemo and useCallback only where profiling shows expensive calculations, unstable functions, or avoidable re‑renders.
Optimising Next.js Performance with Incremental Static Regeneration (ISR). Optimising Next.js Performance with Incremental Static Regeneration (ISR)
How ISR improves Next.js performance by mixing static speed with controlled freshness, and where it fits best over fully dynamic rendering for changing content.
Optimising Vue.js Performance with Lazy Loading and Code Splitting. Optimising Vue.js Performance with Lazy Loading and Code Splitting
Optimise Vue.js performance with lazy loading and code splitting, covering route‑level chunks, async components, bundle strategy, measurement, and UX.
Optimising Angular Forms: Template‑Driven vs. Reactive Forms. Optimising Angular Forms: Template‑Driven vs. Reactive Forms
Template‑driven vs. reactive Angular forms, and how to choose the right model for validation, scale, testing, and maintainable form logic in real apps.