Finally gave the Advanced React website a fresh new look, aligned with the blog. 🎨 Who's here still reading actual books? Feels like a good excuse for a discount on some advanced React knowledge 😉 30% off for the next two weeks 💸 www.advanced-react.com

Advanced React by Nadia Makarevich: Deep Dives, Patterns & Performance

The advanced React book. 16 chapters and 105 interactive examples on how React really works, from re-renders and reconciliation to refs and performance. 4.8★ on Amazon, 4,500+ developers.

advanced-react.com

New article is done! 📝 This time, turning a real-world 300k-line codebase into an AI-friendly playground. So that our AI coders can ship features and engineers can stay sane (almost). www.developerway.com/posts/buildi...

Building the Playground: How to Prep Your Codebase for AI Coders

How to turn a real-world 300k-line codebase into an AI-friendly playground, where AI coders ship features and engineers don't go insane.

developerway.com

A few months ago, I wrote an article on whether AI can replace an experienced developer. The verdict: of course not! Well, @acemarke.dev took it as his personal mission to prove me wrong 😅 And he did! His army of robots solved all the bugs from the original article blog.replay.io/replay-time-...

Replay Time Travelogue: Improving Nadia’s “Debugging with AI” Results Using Replay MCP

blog.replay.io

For books/blogs it's even worse 😅 Ask me how I know...

Josh W. Comeau@joshwcomeau.com · 3mo ago

I’ve spoken to a few course creators now, and we’re all seeing the same trend. Revenue down 50%+. Fewer people engaging with our content. People switching to LLMs, which slurp up all of our work and regurgitate it, without consent or compensation. It feels pretty bleak. 😅

Question: should I continue with performance improvements for my blog, or is it good enough? 🤔 Can't really tell.

New article is out! 📔 Exploring such fundamental concepts in the AI world as agents, tools, agentic loop, and how all of this affects Context and tokens. www.developerway.com/posts/how-ai...

How AI Remembers and Why It Forgets: Part 2. Tools and Agents

What are AI tools and agents really, and how do they keep Context in check? Let's poke around Claude Code, do a few experiments, and find out!

developerway.com

Been processing an unreasonable amount of information on everything AI-related lately, here's the result ☺️ Ever wondered why your clever chat and code assistants are so dumb sometimes? I'm on a mission to answer that with research and data! www.developerway.com/posts/how-ai...

How AI Remembers and Why It Forgets: Part 1. The Context Problem

How does AI actually remember things between messages, and why does it forget halfway through? I ran a few experiments on Claude Sonnet and GPT-5 and wrote down what I saw.

developerway.com

I'm running 30% off both my books for those who still read real books! 💸 Interested in learning the fundamentals of React and Web performance? Don't miss out! Real humans writing real books is a rarity these days 😅 🧵👇🏼

Can AI replace an experienced developer at debugging? To find out, I built an app with three real bugs, threw them at LLM, and then investigated the root cause myself 😅 #react #nextjs #frontend www.developerway.com/posts/debugg...

Debugging with AI: Can It Replace an Experienced Developer?

Can AI actually debug complex React/Next.js issues? I tested it on three real bugs, investigated the root cause myself and wrote down the results.

developerway.com

Up for some reading after a well-spent winter break? New article coming in! #react Server Actions for client-side data fetching - yay or nay? Have you tried that? If you haven't, I tried it for you and wrote down the result 💪🏼 www.developerway.com/posts/server...

Can You Fetch Data with React Server Actions?

Can React Server Actions replace fetch for client-side data fetching? Let's investigate and find out.

developerway.com

Who's ready for another investigative deep dive? 🕵🏻‍♀️ If you've ever been frustrated by how much JavaScript your React app ships, here's a step-by-step guide on investigating and fixing it 💪🏼 As usual, easy to read and lots of hands-on examples. www.developerway.com/posts/bundle...

Bundle Size Investigation: A Step-by-Step Guide to Shrinking Your JavaScript

A practical guide to analyzing and reducing JavaScript bundle size. Learn bundle analysis, fix tree-shaking issues, remove duplicate libraries, and otherwise optimize your React app's JavaScript size.

developerway.com

Launching a 30% discount on my books "Advanced React" & "Web Performance Fundamentals" starting now! Perfect time to level up your React & Web Perf skills 💪🏼 There is also a secret code to turn it into 50% if there is a need 😉 Look for it in the FAQ section of the websites 👇🏼

React Server Components: do they improve performance or make it worse? If your answer is “I’ve no idea 😅,” I wrote a deep-dive to answer that! Experiments and real numbers, CSR vs SSR vs RSC, same app + test setup. Focus: initial load + data fetching. www.developerway.com/posts/react-...

React Server Components: Do They Really Improve Performance?

A data-driven comparison of CSR, SSR, and RSC under the same app and test setup, focusing on initial-load performance and the impact of client- vs server-side data fetching (including Streaming + Susp...

developerway.com

Another much-requested article for you! If you're confused on which state management solution you should use (Redux, Zustand, Context, etc.,) I've got you covered 😉 If you have a different opinion on the topic, please share! Would love to compare notes ☺️ www.developerway.com/posts/react-...

React State Management in 2025: What You Actually Need

Learn how to manage state in modern React apps, what is remote, URL, local, and shared state, and when you actually need a state management library.

developerway.com

performance.now() is coming! @adevnadia.bsky.social will provide a deep dive into the new React Server Components. How does the app render in the browser? What are their performance implications? How do they compare to traditional SSR and CSR techniques? perfnow.nl/speakers.htm...

performance.now(); 30th and 31st of October, Amsterdam

On 30th and 31st of October, 2025, the sixth edition of performance.now() will take place in Amsterdam—a single track conference, covering today’s most important web performance insights.

perfnow.nl

Kicked off the "Testimonials" section for the "Web Performance Fundamentals" book (www.getwebperf.com) with very lovely feedback from the early readers. "Detailed", "on topic", and "simple" are the general themes of the feedback so far :)

New long-awaited article coming your way! 📝 Have you ever wondered why we need Context/Redux/Zustand in React, and why we don't use Local Storage instead of them? The article has an answer! www.developerway.com/posts/local-...

Can We Use Local Storage Instead of Context-Redux-Zustand?

Why do we need Context/Redux/Zustand in React, what is the purpose of Local Storage, its limitations, and when to use it.

developerway.com

Finally! The "Web Performance Fundamentals", my second book, is available on Amazon for all the old-school fans of paper books. 🎉 Grab it here: www.amazon.com/dp/B0FH7L837V The ebook is here: www.getwebperf.com

Quick reminder: my new book is available for purchase, and the 30% launch discount code (**WEBPERF30**) is still valid! Even better, it's also valid for the first book, in case you'd like a complete set. Links 🧵👇🏼

It's happening! The "Web Performance Fundamentals" is live, grab it here: getwebperf.com Made with love for #react developers 😅 #javascript #frontend #performance

Final version of the cover! Also, finally deployed the website with the JoinWaitlist button: www.getwebperf.com. Subscribe not to miss the official announcement and the launch discount code 😉 Expect the email next Monday! #react #frontend #javascript

This is happening and pretty soon! The new book is coming, final polish in progress. In the meantime, which title do you like best? "Beyond Re-renders Web Performance Fundamentals for React Developers" "Web Performance Fundamentals Profile & Optimize React Web Apps" 🧵👇🏼

New #react #performance investigation, anyone? This time, trying to answer a very existential question 🙈 What is better from the performance perspective: Tailwind or Linaria? 🤔 www.developerway.com/posts/tailwi...

Tailwind vs Linaria: Performance Investigation

Investigating performance of Tailwind vs Linaria frameworks, with a focus on initial load and interaction performance.

developerway.com

Deep-dive #performance investigation to start the week, anyone? Everything you wanted to know about SSR in #react and probably more! ☺️ The article includes 🧵👇🏼 www.developerway.com/posts/ssr-de...

SSR Deep Dive for React Developers

Explore step-by-step how Server-Side Rendering (SSR), pre-rendering, hydration, and Static Site Generation (SSG) work in React, their costs, performance impact, benefits, and trade-offs.

developerway.com

Who loves big discounts on useful things? I'm running yet another 20% discount week on the Advanced React book! Some nice things people have to say about the book in the carousel. www.advanced-react.com Also, there is a secret code for more discount 👇🏼

To improve INP on two pages (estimated save: 200K$/year), with less than 3 months available, tons of data, a dedicated team, and complete freedom, we improved Preply Next.js application's INP! medium.com/preply-engin... 👇

Have you ever stared at a #performance Flame Graph in DevTools in desperation? Those graphs 📊 look very cool and important, but making sense of them is always a struggle. The new article tries to help with that ☺️ You'll learn 👇🏼 www.developerway.com/posts/client...

Client-Side Rendering in Flame Graphs

Intro to Performance Flame Graphs. Learn how to read and extract useful info from performance flame graphs while exploring how the Client-Side rendering works in React applications.

developerway.com

Are y'all up for some intense reading about #performance? I have a new article! In fact, it's not even an article but more of a mini-course in article format. It even has a study project and some homework to qualify! 😅 www.developerway.com/posts/initia...

Initial load performance for React developers: investigative deep dive

Exploring Core Web Vitals, Chrome performance panel, what initial load performance is, which metrics measure it, and how cache control and different networking conditions influence it.

developerway.com

Random thought keeps bugging me with all this AI hype. Of all the things that developers are doing at work, why are they the most excited about tools that replace coding with AI prompts? Since when do developers hate coding and love writing? 🤔

Tiny book update for those of you who's not in holiday mode already🎄 I finally extracted everything I wanted to write about into a proper structure. The draft name is "Advanced React Part 2: Beyond React". Does the structure make sense? Anything missing or not necessary?