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By Addy Osmani and Hassan Djirdeh

Code Smart, Scale Fast, Conquer Challenges

Learn tools and techniques to build and maintain large-scale React web applications.

Or  for free.
Building Large Scale Web Apps: A React Field Guide. By Addy Osmani and Hassan Djirdeh

“Building Large Scale Web Apps” is a toolkit to managing large-scale React applications.

React as a library allows you to start building user interfaces quickly and easily. But how do things scale as an application grows? How do you ensure that your codebase remains manageable, your performance metrics stay on point, and your team continues to work cohesively as the project evolves?

In this book, you'll uncover strategies that industry professionals use to build scalable, performant, and maintainable React applications, all without becoming overwhelmed by complexity.

Together, we've spent well over two decades building within or consulting for

The Google logo.
The Doordash logo.
The Instacart logo.
The Netflix logo.
The X logo.
The YouTube logo.
The Shopify logo.
The Ebay logo.

: Critics often point to this episode as the moment Marty Byrde’s "efficiency" becomes truly predatory. By teaching Ruth how to "cook the books" at the Blue Cat Lodge, he isn't just mentoring her; he’s ensuring her complicity in his criminal world.

: This episode introduces the first major crack in Marty’s local operations when Rachel discovers the massive discrepancies in the Blue Cat’s ledgers, shifting the show from a survival thriller to a complex character study on the collateral damage of Marty’s presence. Critical Reception

: The episode’s title is a biblical reference to the Book of Ruth, known for the line "Where you go, I will go." This mirrors Ruth’s decision to choose her new "family" (Marty) over her biological one, ultimately leading her to booby-trap the dock to kill her uncles.

Many viewers and reviewers on platforms like Reddit's Ozark community discuss the technicality of Marty's money laundering revealed here, specifically how he over-reports expenses to clean the cartel’s cash. For those interested in a more visceral reaction, creators like Culture Screen on YouTube offer deep-dive reviews that break down the emotional weight of Ruth’s choice and its long-term consequences for the series. Ozark | S1 E6 'The Book Of Ruth' | Reaction | Review

" The Book of Ruth " (Season 1, Episode 6) is widely considered a turning point for , as it shifts Ruth Langmore from a secondary antagonist to a core, tragic protagonist. A particularly insightful analysis of this episode can be found in the AV Club's episodic review, which highlights how the show finally moves past its "Breaking Bad-lite" comparisons by grounding the stakes in Ruth’s internal conflict. Key Themes & Narrative Shifts

Some other things!

Descriptive content, continous updates, and soundbites from industry professionals.

Descriptive, not prescriptive

When explaining content, we follow a descriptive approach, not prescriptive. In other words, we don’t tell you what specific tools or libraries you have to use to be successful. Rather, we focus on explaining a concept and employ certain libraries or tools to illustrate that concept.

React-focused with universal concepts

While the book is React-focused, it teaches universal concepts that transcend all web development frameworks. It's designed to enhance your understanding of building web applications that are scalable, maintainable, and adaptable, regardless of the specific technology stack.

Continous, frequent updates

Purchasing the e-book gives you access to all new content, edits, and improvements forever. In fact, we're currently working on adding three new chapters soon — Routing, User-centric API design, and React in 2024. Check out the Changelog to follow along on all the updates we'll make.

Soundbites from industry professionals

In the book, we share soundbites and thoughts from industry professionals. These soundbites are shared from start-up owners and software engineers who work at Doordash, Netflix, Spotify, and more.

Back cover of physical book
Front cover of physical book
Back cover of physical book
Contents of physical book

Industry nuggets

Nuggets of wisdom from industry professionals

Jem Young

Maxi Ferreira

Emma Bostian

Zeno Rocha

Francine Navarro

Jeffrey Peng

And others!

[s1e6] Book Of Ruth [LIMITED • 2025]

: Critics often point to this episode as the moment Marty Byrde’s "efficiency" becomes truly predatory. By teaching Ruth how to "cook the books" at the Blue Cat Lodge, he isn't just mentoring her; he’s ensuring her complicity in his criminal world.

: This episode introduces the first major crack in Marty’s local operations when Rachel discovers the massive discrepancies in the Blue Cat’s ledgers, shifting the show from a survival thriller to a complex character study on the collateral damage of Marty’s presence. Critical Reception [S1E6] Book of Ruth

: The episode’s title is a biblical reference to the Book of Ruth, known for the line "Where you go, I will go." This mirrors Ruth’s decision to choose her new "family" (Marty) over her biological one, ultimately leading her to booby-trap the dock to kill her uncles. : Critics often point to this episode as

Many viewers and reviewers on platforms like Reddit's Ozark community discuss the technicality of Marty's money laundering revealed here, specifically how he over-reports expenses to clean the cartel’s cash. For those interested in a more visceral reaction, creators like Culture Screen on YouTube offer deep-dive reviews that break down the emotional weight of Ruth’s choice and its long-term consequences for the series. Ozark | S1 E6 'The Book Of Ruth' | Reaction | Review Critical Reception : The episode’s title is a

" The Book of Ruth " (Season 1, Episode 6) is widely considered a turning point for , as it shifts Ruth Langmore from a secondary antagonist to a core, tragic protagonist. A particularly insightful analysis of this episode can be found in the AV Club's episodic review, which highlights how the show finally moves past its "Breaking Bad-lite" comparisons by grounding the stakes in Ruth’s internal conflict. Key Themes & Narrative Shifts

Who we are

Heyo! We're Addy & Hassan — Engineers & Educators.

Profile picture of Addy Osmani

AddyOsmani

I'm an engineering leader working on Google Chrome and I lead up Chrome's Developer Experience organization, helping reduce the friction for developers to build great user experiences.

HassanDjirdeh

I'm a senior software engineer and have built large production web applications at organizations like Doordash, Instacart, and Shopify.

Profile picture of Addy Osmani

Pick your package

“Building Large Scale Web Apps” is available in either an e-book or as a physical copy.

E-book

Great for digital learners.

$24.99USD

  • 300+ pages
  • PDF or EPub (or both)
  • All future updates
Buy with Leanpub Or buy with Apple Books or Google Play

Physical copy (softcover)

Perfect for hands-on referencers.

$49.99USD

  • 300+ pages
  • Softcover
  • Something to put on your bookshelf
  • Interested in both the e-book and physical copy? Purchase both separately!
Buy Physical Copy

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