This course provides an in-depth, hands-on journey into designing and implementing ultra-scalable task schedulers using Java Spring Boot. You will learn every core system design concept, explore diverse use cases, and gain practical experience
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 170 | Founded | a year ago | Last Issue | 6 days ago |
| Active | |||||
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Start here: how this publication works
Most system design content stops at the diagram. This publication starts there. Every lesson ships a runnable Java project: you watch a real failure happen on your own machine, measure it, fix it, and measure again.
One example. In Day 79,...
Day 81: Search Architecture - What a _search Call Actually Asks a Cluster to Do
Most search tutorials start with “here’s how to configure a cluster.” This lesson does something a little different: it builds the engine from scratch, in plain Java, and teaches what a search request is actually asking for underneath the R...
Day 80: Push Notifications - Queuing for a Server You Don’t Control
Every lesson in this course so far has been about a system this course’s own architecture controls end to end -- the gateway, the SFU, the rate limiter, all of it running code this course wrote, subject to constraints this course chose. Pus...
Day 79: Distributed Rate Limiting II - Writing Atomic Lua Scripts for Redis
Day 78 built a token bucket that’s genuinely correct on one node — lock-free, lazy-refilled, no background thread.
Day 78 built a token bucket that’s genuinely correct on one node — lock-free, lazy-refilled, no background thread. Run two g...
Phase 2: The Fan-Out — Build a Guild-Centric Pub/Sub Gateway in Java 21
Decouple chat ingress from WebSocket egress with Redis Streams, local fan-out, intents, ring buffers, presence, and typing.
What we’re building today
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| Subscribers | Engagement | 68 | Monthly Web Visits | ||
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