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Hands-on System Design with Java Spring Boot

Hands-on System Design with Java Spring Boot

Design and Implement Ultra-Scalable Systems in Java Spring Boot

An in-depth, hands-on journey through two courses: an Ultra Scalable Task Scheduler built to handle millions of requests per second, and a 90-day program building Discord β€” from socket to scale.

90
day Discord build
5+
core topics covered
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"Subscribers report interest from professionals at Netflix, Uber, and Amazon."

What you'll build

a Task Scheduler + Discord

an Ultra Scalable Task Scheduler handling millions of requests per second, and a 90-day build of a Discord-style chat platform β€” socket to scale

The curriculum

5 core areas covered
01 Core system design concepts with practical, runnable code
02 Socket programming and the Gateway pattern
03 The "Thundering Herd" problem and how to solve it
04 Message storage optimization with ScyllaDB
05 Voice signaling via SFUs

What you'll walk away with

A task scheduler you built yourself, handling millions of requests
A Discord-style chat platform β€” sockets, the Gateway pattern, SFUs, all of it
Runnable code for every concept covered, not just diagrams

What you're signing up for

What makes it different

Two full courses, one subscription β€” task scheduler internals and a real-time chat platform built end to end.

Format

Daily code lessons delivered via Substack.

Who it's for

Engineers who want to build a task scheduler and a Discord-scale chat platform themselves, not read a case study about someone else's.

A few things worth knowing

How often will I get an email?

Daily β€” check "From the archive" above to see the actual pace before you subscribe.

Is this actually free?

Yes β€” 100% free, no card required, no trial that converts to a charge later.

Can I unsubscribe anytime?

Yes, one click, no hoops β€” that's a standard Substack feature, not something we gate.

The task scheduler β€” and Discord β€” are waiting to be built.

Join Hands-on System Design with Java Spring Boot β€” free, straight to your inbox. 5+ topics, one subscription.

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This newsletter is free, always. If you want the full System Design Roadmap library β€” every course, every lesson, and private GitHub repos β€” that's Pro Max Annual. See what's included β†’

System Design Fundamentals – E-Book

Free download

Free eBook: System Design Fundamentals

Create a free account and download the ebook instantly. Learn the core building blocks β€” scaling, caching, databases and messaging β€” the way interviewers expect you to explain them.

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