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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.

As of May 2026, there is no official record of a fourth season of a series titled "Utha Patak" on ALTBalaji, making details for a 2025 release fictional. Search terms referencing "moviespap" likely point to unauthorized sites, which often pose risks of malware and phishing. For accurate information on upcoming releases, check official ALTBalaji channels. AI responses may include mistakes. Learn more Share public link

is an Indian anthology web series that streams on the ALTT platform (formerly known as ALTBalaji). Centered on the concept of a mysterious book, the series blurs the lines between reality and fantasy for its characters. This central device allows each episode to explore standalone stories, often delving into themes of romance, desire, and moral conflict.

Utha Patak is a Hindi-language drama and fantasy anthology series that debuted in 2024.

ALTBalaji is an Indian subscription-based video-on-demand platform founded by Ekta Kapoor. It was launched on April 16, 2017, as a wholly owned subsidiary of Balaji Telefilms Ltd.. The platform is known for creating original OTT content across genres such as action, comedy, and drama, available in multiple languages.

Utha Patak — the name itself suggests a sudden, explosive burst of energy, much like a firecracker going off in a quiet lane. True to its title, ALTBalaji’s edgy drama has built a reputation for unexpected narrative detonations. By Season 4, the series has moved beyond its initial small-town love-and-betrayal setup into a dark, high-stakes world of power, revenge, and fractured loyalties.

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!

Utha Patak 2025 S04 Altbalaji E11 Www.moviespap... Instant

As of May 2026, there is no official record of a fourth season of a series titled "Utha Patak" on ALTBalaji, making details for a 2025 release fictional. Search terms referencing "moviespap" likely point to unauthorized sites, which often pose risks of malware and phishing. For accurate information on upcoming releases, check official ALTBalaji channels. AI responses may include mistakes. Learn more Share public link

is an Indian anthology web series that streams on the ALTT platform (formerly known as ALTBalaji). Centered on the concept of a mysterious book, the series blurs the lines between reality and fantasy for its characters. This central device allows each episode to explore standalone stories, often delving into themes of romance, desire, and moral conflict. Utha Patak 2025 S04 ALTBalaji E11 www.moviespap...

Utha Patak is a Hindi-language drama and fantasy anthology series that debuted in 2024. As of May 2026, there is no official

ALTBalaji is an Indian subscription-based video-on-demand platform founded by Ekta Kapoor. It was launched on April 16, 2017, as a wholly owned subsidiary of Balaji Telefilms Ltd.. The platform is known for creating original OTT content across genres such as action, comedy, and drama, available in multiple languages. AI responses may include mistakes

Utha Patak — the name itself suggests a sudden, explosive burst of energy, much like a firecracker going off in a quiet lane. True to its title, ALTBalaji’s edgy drama has built a reputation for unexpected narrative detonations. By Season 4, the series has moved beyond its initial small-town love-and-betrayal setup into a dark, high-stakes world of power, revenge, and fractured loyalties.

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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