Review — Is ByteByteGo a Good Place for FAANG Level System Design Interview Preparation in 2026?
Does ByteByteGo course really worth it for FAANG level System Design Interview Prep in 2026
Hello guys, if you are preparing for a System Design Interview, then you may have come across names like ByteByteGo and System Design Interview — An insider’s guide, one of the best resources for System Design Interview by Alex Xu.
In this article, I will provide my detailed review and opinion on ByteByteGo and his popular System Design Interview — An Insider’s Guide book.
Though if you have already made your mind and just need a second opinion, I suggest you to go for it. The value the ByteByteGo course provides is much more than the price you pay. It’s one of the most comprehensive, up-to-date, and easy-to-learn System design courses I have come across.
I highly recommend it to every Programmer and Software Engineer, irrespective of whether you are preparing for a System Design Interview or not. It will help you to become a better developer in no time.
I first came across Alex Xu and ByteByteGo when one of his tweets on how HTTPS works. popped me on my timeline, I really liked the way he explained the concept and his clear diagram, like the one shown below:
After that, I started to find more about ByteByteGo and Alex and found that he is also an author of the popular System Design book, called System Design Interview — An insider’s guide, Part 1 and Part 2, and since I have always been interested in System design and Software Architecture, I started reading them.
The more I read them, the more I become a fan of Alex Xu and his work, and then I found that he also has an online course on System Design on ByteByteGo, whatever you called.
His course is actually a digital version of his book; it covers all the material provided in System Design Interview — An Insider’s Guide, Part 1 and Part 2 but also more stuff as he keeps adding new stuff on this website.
What is ByteByteGo? How does it help you to learn System Design in depth?
ByteByteGo is a text-based System Design course that contains lots of detailed illustrations to guide you through how to build complex systems step by step in a way that’s easy to understand.
As Alex Xu put it, ByteByteGo or Byte Byte Go is the digital version of his popular System Design Interview — An Insider’s Guide book. It not only covers all the materials in parts 1 and 2 but also additional material that Alex added only to the online version.
It’s similar to Educative’s Grokking Modern System Design for Software Engineers and Managers
Course which is also text-based, but it’s actually a well-thought-out course and covers a lot more concepts. The first 3 of the 13 chapters are dedicated to Location Based Services(LBS).
Since many of us use location-based apps like OLA, Uber, Grab, Google Maps, etc, it makes it easy to understand how they are implemented and work.
ByteByteGo also covers things like Proximity Services that deal with static locations like Yelp and the Nearby Friends service, which deals with dynamic locations because people move. And their deep dive into Google Maps is another useful piece of information, which is really a massive Geospatial platform.
What I most like about both book and course is that they discuss various Geospatial indexes (Google S2, Quadtree, Geo Hash, etc), including their tradeoffs, which is something I haven’t found covered in other popular System design courses.
But, this is not all; they cover many other popular systems like Payment Systems, Distributed Email Service, and Real-time Gaming Leaderboard, which will surely broaden your knowledge.
Are ByteByteGo and System Design Interview worth it for Beginners and Experienced Developers?
Even though the book was designed with System Design Interview in mind, it revisits and explains key computer science concepts with a twist of engineering that is not only useful for system design interviews but also for every programmer and Software engineer who wants to become better at their job.
Both the System Design book and ByteByteGo website will help you to better understand why some design decisions are made over others, which makes it ideal for beginners and experienced folks who want to brush up on system design concepts before an interview.
One worth mentioning thing about ByteByteGo and his System design book is the case studies. I personally like to read case studies that are diverse, engaging, and in-depth, and Byte Byte Go fits that bill.
I imagine it was quite a feat to cover quite a wide range of subjects in practical details, while at the same time keeping it crisp and easy to digest, in a 400-ish page book or an online course.
What I like most about ByteByteGo System Design training course is that every single design decision consider the scale of system like small, medium or large In addition all algorithms come with a practical time/space complexity analysis, in some cases it goes really deep into the data structure used and how such Data Structure fit into a production ready environment, which is what many people like me liked to see.
You will learn to analyze the trade-offs of packing a quad-tree geo-hashed regions into 1GB memory and how it impacts server startup time, and otherwise point in the right direction for those willing to deepen their understanding of the just discussed concepts in depth.
All these things make ByteByteGo and System Design Interview — An Insider’s Guide a must-read book for every programmer. All the things you learn is nothing for the price you pay for the book and course, its immensely valuable.
Which System Design Problems are solved in this course?
IF you are wondering which System design problems are solved in this book or course, and which products are designed and explained, then here is a list of them:
1. How to design YouTube?
2. How to design Ads Aggregation
3 . How to design the Stock Exchange
4. How to design Newsfeed
5. How to design a Gaming Leaderboard
6. How to design a Mail Server
7. How to design a Hotel Reservation System
8. How to design a URL Shortener like bit.ly
9. How to design a Web Crawler
10. How to design a Notification System?
11. How to design a payment system?
12. How to design a Digital Wallet?
13. How to design Search Autocomplete and so on
14. How to design a BlockingQueue?
Apart from that, they explain many key System Design concepts and algorithms like consistent hashing, distributed caching, Rate Limiter, Unique ID Generator, as well as a framework for System Design Interview.
Many of these resources are completely free on the ByteByteGo platform, and you can read them to get a feel of the content.
What is the cost of ByteByteGo Membership?
Alex has been kind enough to put price parity in his Byte Byte Go course, which means the course will cost you less if you are coming from India than the US, which makes it really affordable to all kinds of technical people coming from all sorts of countries with different purchasing power.
Here is the cost of ByteByte membership in major countries and currencies:
Cost of ByteByteGo in the United States (US) — 84.00 per year
Cost of ByteByteGo in India — INR 3500 per year
Cost of ByteByteGo in Canada — CAD 84.00 per year
Cost of ByteByteGo in Singapore — SGD 82.97 per year
And here is what you will get for that price:
Everything in the books
Regular new content releases
400+ diagrams
Exclusive Discord community
Mock interview buddies
The price and value proposition of this course lean towards value because the value it provides for the price is immense.
There are not many places online where you can learn about System design in such depth and so easily as ByteByteGo, and that’s why I highly recommend a ByteByteGo membership to every programmer.
If you have a friend, you can even gift him a ByteByteGo membership, and he will never forget it.
Is ByteByteGo worth it for System Design Interview Preparation?
In my honest opinion, ByteByteGo is definitely worth it for anyone who wants to learn System Design. If I have to pick what I like most is their diagram; those are really, really good, but the depth of the knowledge Alex Xu shares is also impressive.
On top of that the language makes those technical concepts easy to understand. By considering all factors like price, value, diagrams, explanation and content quality, I am 100% convinced that both ByteByteGo and Alex’s System Design Interview — An insider’s guide books is worth it. This is actually the best money spent on learning Software design.
I have gone through many great System Design Interview resources like Educative’s Grokking Modern System Design for Software Engineers & Managers, Udemy’s System Design course, DesignGuru’s Grokking System Design course, as well as Exponent’s System Design Course, and found that ByteByteGo is the most comprehensive, up-to-date, and most interesting of all of them.
To be honest, this is one of the resources that you won’t find easily. Most of the knowledge you learn by working on big scalable systems like Amazon, Spotify, Google, etc., but you learn all of them by just joining this course.
All these make it one of the best investments you will make in learning because Software design concepts are essential for designing a scalable system that can withstand the test of time in production.
Should You Join ByteByteGo or Software Design Interview — An insider’s guide Book by Alex Xu?
If you are confused between a book and a course and just want to join one thing, then I suggest going for the ByteByteGo course. Since it’s easier to update the course website rather than publish a new version of the book, it makes more sense to join ByteByteGo than to read System Design Interview — An Insider’s Guide by Alex Xu.
You will always get more updated material via the course than the book, but if you are someone who enjoys reading books, then by all means go for the System Design Interview book; it’s one of the best books I have read on Software Design and I highly recommend it.
Even if you are not preparing for a technical interview, reading and learning about Software design will help you immensely technically, and you will be a better developer and software architect after learning those essential Software design concepts like distributed architecture, two-phase commit, caching, reliability, Microservices, communication, etc.
The best thing about the course is that you will not only get all the content that is taught in the book but also 400+ diagrams, an exclusive Discord community, and Mock interview buddies, which will help you crack your Software Design Interview.
Thanks to both Alex Xu and Sahn Lam for creating these wonderful books and the ByteByteGo online course platform.
Here is the link to join the ByteByteGo Platform — Join ByteByteGo for 10% discount
Thanks for reading this article so far. If you like my review of the ByteByteGo system design course website and System Design Interview — An Insider's Guide book, then please share it with your friends.
It’s one of the best resources you can get online to learn about System Design in depth, and I highly recommend it to all levels of programmers. Beginners can learn concepts they don’t know, and Experienced programmers can brush up on things they already know and get a fresh perspective on how a large and scalable system works.
P. S. — If you just want to do one thing at this moment, go join ByteByteGo and start learning System Design concepts. You will thank me later. Make it a goal for the new year, and you will surely be a better Software Engineer.
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