📈 Advanced Patterns React
Escape Tutorial Hell, Master
Advanced React Patterns
Become an advanced, confident React developer ready for senior-level roles.
Cosden Solutions
Trusted by 1021 developers
Tired of superficial tutorials that barely scratch the surface?
Stuck building the same small apps, feeling overwhelmed by complex React concepts and tools?
You're not alone.
Intermediate React developers everywhere face the same frustration:
- ❌ Superficial tutorials that don't help with real-world applications.
- ❌ Outdated resources making you doubt your skills.
- ❌ Lack of deep architectural knowledge to confidently tackle large projects.
This course is your way out.

Some of the code you'll be writing in the course
Introducing: Advanced Patterns React
Advanced Patterns for Building Scalable React Apps
This isn't another beginner course rehashing the basics.
This comprehensive training dives deep into advanced patterns used by senior developers at top companies.
Built entirely in React 19 with the React Compiler, this course covers:
- ✅ End-to-end type safety with tRPC for robust client-server communication.
- ✅ Advanced React Query Patterns for sophisticated data fetching.
- ✅ Optimized Prefetching and Caching Strategies for blazing-fast performance.
- ✅ Dynamic and Custom Routing with Tanstack Router for seamless navigation.
- ✅ Complex Optimistic Updates ensuring instant user interactions without compromising data integrity.
- ✅ Robust Cache Management and Invalidation strategies for perfect synchronization.
- ✅ Secure Authentication & User Profile Management with best practices.
- ✅ Advanced Component and Code Design Patterns for maintainable codebases.
- ✅ Advanced Typescript Patterns for bulletproof applications.
- ✅ Real-world integrations like file uploads, maps with OpenStreetMap API, and shared validation schemas.
Built using modern industry-standard tools:
- - Monorepo architecture powered by pnpm workspaces.
- - Stylish and accessible UIs crafted with Tailwind and shadcn/ui components.
All fully typed with TypeScript for maximum reliability.

Some of the patterns you'll be implementing in the course
Ready to transform your React skills?
Enroll NowWho Is This Course For?
You're a great fit if:
- - You're an intermediate React developer tired of hitting plateaus.
- - You're a junior developer who's brave enough to tackle complexity.
- - You're ambitious, ready to secure a senior role, launch your own projects, or become an industry-respected developer.
Imagine Finally Understanding...
- - How to confidently structure large, scalable applications.
- - Advanced data management with complex caching, invalidation, and optimistic updates.
- - Navigating with dynamic routing and URL parameters effortlessly.
- - Building real-world features like authentication, profile management, and geolocation integrations.
No more guesswork. No more superficial tutorials. Just clear, deep, practical skills.

The home page of the application you'll be building
🔥 What Developers Like You Are Saying
See what others are saying about this course. These are all testimonials from people who have no interest in saying how good the course is.
Maya

I was really struggling to feel confident in React, even though I had been using it for a while. Everything just felt messy and complicated. But after going through this course, my whole approach changed. Now, when I look at a complex React project, I actually know what’s going on instead of just guessing. HUGE confidence boost. Thank you for making this!!
Jared

Man, I just gotta say this course is insane. I thought I knew React, but I did not. Not like this. Every module kept surprising me with things I didn’t even know I was missing. Like, the way you teach data prefetching with React query? Why has no one ever explained it like that before? Seriously, thank you. This changed my life.
Robert

Wow, I understand everything so clearly now. The way you teach really resonates with me. Thank you for this, this is the most valuable resource I’ve ever seen for React. I didn’t know about all the router stuff and cache updates, but it makes so much sense when you teach it. I feel so confident in my abilities now and have already started applying what I’ve learnt to my own code. Thank you once again.
Liam

Just finished the course, and here’s my review. Honestly, this is the best React course out there. It’s structured so well, and every lesson builds on the last one in a way that makes it all click together. It is advanced, so make sure to have experience with React before getting it. But at the same time, it’s explained really well. The concepts are broken down in an easy to understand manner. I wish this existed earlier, it would’ve saved me so much time. If you’re serious about becoming great at React, take this course.
Priya

Turns out I only thought I knew React. 😅 The way everything is structured, the real-world project, the clear explanations… it all just makes sense. Like, I actually understand how to build a big app now. Before, I was just scared of it. On top of that, there’s the deep dives on tRPC, Tanstack router, prefetching and caching. There’s so much to learn. This is the best React course out there, hands down.
Omar

I FINALLY understand the new modern react stuff. I have struggled with routes, loaders, prefetching, all that stuff for months, and now it’s just… clear. I was literally pausing the video, trying things out, and it just worked. I feel like I unlocked a superpower. This course is pure gold.
Pattern-First Method: Your Roadmap to React Mastery
Most courses fail because they focus only on surface-level tasks. Our unique Pattern-First Method ensures you'll:
- - Understand the underlying principles, not just the steps.
- - Confidently adapt and apply these patterns to any complex application.
- - Gain real-world skills applicable to your current or future projects.
Each lesson systematically builds your knowledge by integrating deep theoretical insights with hands-on coding.
Ready to transform your React skills?
Enroll Now📚 Course Modules and Real-World Project
You'll build a fully-featured, scalable single-page application (SPA), covering:
- - Component Architecture Mastery: Complex, reusable, and scalable component patterns.
- - Advanced Routing and Navigation: Deep customizations with Tanstack Router, dynamic filters, and search params.
- - Data Management Excellence: Prefetching, caching, optimistic updates, and robust error handling.
- - Secure Authentication: Industry-standard methods for user authentication and profile management.
- - Real-World Features: File uploads, maps, and date/time handling using the latest best practices.
By the end of this course, you'll have an impressive, portfolio-ready project demonstrating true senior-level React expertise.

Module 1 - Getting Started
You will be introduced to the course, guided on how to install and setup the codebase, and we will go over all of the files available in the application.

Module 2 - Data Fetching, Mutations, and Caching
You will learn advanced patterns for working with tRPC and React Query to fetch data and populate the cache, and you'll learn patterns for cache invalidation when data changes.

Module 3 - Navigation, Loaders, and Params
You will learn advanced patterns on how to use navigation, loaders, and params to prefetch and cache data outside of React components, handle dynamic parameters, and use search params and filters to navigate between pages and pass data between them.

Module 4 - Authentication and User Management
You will learn implement authentication and how to securely connect it to the backend, how to handle user sessions, and how to implement functionality for user management.

Module 5 - Optimistic Updates and Cache Manipulation
You will dive deep into optimistic updates and learn how to manipulate the cache to improve the user experience when interacting with data.

Module 6 - Features, Features, and More Features
You will apply all of the patterns you've learnt during the course to build features in the application effectively. This is where you'll see the true power of the patterns you've learnt in action.
Ready to transform your React skills?
Enroll Now🔥 What Developers Like You Are Saying
See what others are saying about this course. These are all testimonials from people who have no interest in saying how good the course is.
Maya

I was really struggling to feel confident in React, even though I had been using it for a while. Everything just felt messy and complicated. But after going through this course, my whole approach changed. Now, when I look at a complex React project, I actually know what’s going on instead of just guessing. HUGE confidence boost. Thank you for making this!!
Jared

Man, I just gotta say this course is insane. I thought I knew React, but I did not. Not like this. Every module kept surprising me with things I didn’t even know I was missing. Like, the way you teach data prefetching with React query? Why has no one ever explained it like that before? Seriously, thank you. This changed my life.
Robert

Wow, I understand everything so clearly now. The way you teach really resonates with me. Thank you for this, this is the most valuable resource I’ve ever seen for React. I didn’t know about all the router stuff and cache updates, but it makes so much sense when you teach it. I feel so confident in my abilities now and have already started applying what I’ve learnt to my own code. Thank you once again.
Liam

Just finished the course, and here’s my review. Honestly, this is the best React course out there. It’s structured so well, and every lesson builds on the last one in a way that makes it all click together. It is advanced, so make sure to have experience with React before getting it. But at the same time, it’s explained really well. The concepts are broken down in an easy to understand manner. I wish this existed earlier, it would’ve saved me so much time. If you’re serious about becoming great at React, take this course.
Priya

Turns out I only thought I knew React. 😅 The way everything is structured, the real-world project, the clear explanations… it all just makes sense. Like, I actually understand how to build a big app now. Before, I was just scared of it. On top of that, there’s the deep dives on tRPC, Tanstack router, prefetching and caching. There’s so much to learn. This is the best React course out there, hands down.
Omar

I FINALLY understand the new modern react stuff. I have struggled with routes, loaders, prefetching, all that stuff for months, and now it’s just… clear. I was literally pausing the video, trying things out, and it just worked. I feel like I unlocked a superpower. This course is pure gold.
Transform Your Career Today
Don't settle for outdated knowledge or superficial content. Invest in advanced skills that:
- - Set you apart as a top-tier React developer.
- - Enable you to lead complex projects confidently.
- - Secure your position in a rapidly evolving industry.
Start your journey to advanced React mastery now.
Advanced Patterns React
Full Course
$347
$247
+ local taxesCosden Solutions
Trusted by 1021 developers
The full Advanced Patterns React course
700+ minutes of course material teaching you advanced patterns in React from data prefetching to navigation, authentication, optimistic updates, and more.
The codebase
The codebase contains a prebuilt backend, custom components, API endpoints, and all of the building blocks you need to work with the course content.
Lifetime access to updates
You will have lifetime access to all the course material, including any updates and new content we add in the future.
Access to the Advanced Patterns React community
You'll get access to private channels in our Discord community where you can ask questions, share your progress, and get help from the instructor or other students.
Frequently Asked Questions

Hey, I’m Darius! 🤙
You might know me from my YouTube channel, Cosden Solutions.
I've been working with React for over 9 years, building complex projects as both a team member within startups and corporations, as well as on my own as a freelancer. I've also dedicated long after-work hours to passion projects. I've learned a lot about React along the way, how it truly works under-the-hood, how to effectively use it, and how to build really big and complex applications with it.
In early 2023, I decided to start teaching React to others. I created a YouTube channel which has now grown to millions of views and tens of thousands of subscribers. As much of a success as the YouTube channel has become, I felt like I could do more. I wanted to create a course that would help people learn React in a way that I wish I had learned it.
I've designed my courses for those who are in the same position I was 9 years ago – feeling overwhelmed with React. There are so many tutorials and roadmaps out there, but the truth is, however much time you spend on them, when you eventually get that job you wanted or start building that project, if you're anything like me, you'll feel like an imposter.
All those tutorials and roadmaps showed you were small projects. And the thing on your screen now is BIG. This is how I made this course and kind of reverse-engineered them – starting from real concepts and real-world projects, you will learn everything you need to know about React and beyond, all while gaining confidence to handle a project of this size when the time comes.
My courses will prepare you for the real-world of React much more than any tutorial could and you will learn everything you need to become a great React developer.

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thank god i stumbled upon your channel..i am learning about all the hooks that react has to offer through your channel..i am loving the clear explanations that you provide..not a single dull moment in the video! kudos to you sir! love you!!! ❤️

Your videos has helped to understand react. And honestly, this is my first comment on a react tutorial videos. I did not just subscribed and liked but also allowed notification for new videos from your channel. Thank you

I am becoming a fan of your teaching style. First i watched your redux video and now i am not watching any other redux tutorial. because that video is so straightforward and to the point. please keep on adding videos like this. already subscribed:) 👍