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Packet Island
Learn system design through playful 3D experiments
Explore 12 interactive lessons on bottlenecks, caching, queues and more. Change a setting, watch the system respond, and understand the tradeoffs. A friendly 3D learning space with guided notes, self-checks, and English + Vietnamese. Free, no account needed.
Hey Product Hunt! I'm Huy, the maker of Packet Island.
This project is inspired by my System Design ebook. I wanted to give readers a place to try the ideas: change a setting, follow a request, and see why the outcome changes.
Packet Island turns those concepts into 12 interactive 3D lessons. You can explore bottlenecks, replication, databases, load balancing, caching, queues, retries, security, observability, and the tradeoffs that connect them.
Each lesson has a small experiment, guided notes, and a self-check with an explanation. Try raising traffic, changing a cache TTL, or adding workers to a busy queue. The models show their assumptions so you can reason about the result.
There's also a milk tea shop sandbox where you place buildings, connect routes, and try to handle a traffic spike within a budget.
It's free, runs in your browser, and doesn't need an account. English and Vietnamese are available throughout, with dark mode, mobile layouts, and reduced-motion support. Your learning progress stays in your browser.
A good place to start is the first lesson, then jump to caching or queues and change one setting at a time.
I'd love to hear which concept becomes clearer after trying it, and where the explanation still leaves you with questions.
Explore: https://learnsystemdesign.guru/en/
Thanks for taking a look!
Huy
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About Packet Island on Product Hunt
“Learn system design through playful 3D experiments”
Packet Island was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #125 on the daily leaderboard. Explore 12 interactive lessons on bottlenecks, caching, queues and more. Change a setting, watch the system respond, and understand the tradeoffs. A friendly 3D learning space with guided notes, self-checks, and English + Vietnamese. Free, no account needed.
Packet Island was featured in Education (79.1k followers), Developer Tools (519k followers) and Online Learning (3.7k followers) on Product Hunt. Together, these topics include over 121.3k products, making this a competitive space to launch in.
Who hunted Packet Island?
Packet Island was hunted by Nguyễn Thế Huy. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Nguyễn Thế Huy