Zomato’s Backend Architecture | Rider Assignment System from Scratch Java LLD + Kafka + Redis 🔥

Ever wondered how Zomato assigns the best possible rider to your order in under 1 second?

In this video, we’ll break down the real-world low-level design (LLD) of the Rider Assignment System used by apps like Zomato, Swiggy, and Uber Eats — and implement it in Core Java from scratch! 🚴‍♂️💨

🔍 What You’ll Learn:
✅ Rider scoring algorithm (distance, idle time, traffic, rating)
✅ Retry logic & radius expansion
✅ Kafka event flow (restaurant_accepted, rider_rejected, DLQ)
✅ Redis GeoHashing & nearby rider lookup (explained)
✅ Real-time notifications & system monitoring
✅ Edge case handling in production systems
✅ Clean, testable Java LLD using design patterns

💻 Tech Stack Covered:
Core Java

Kafka (theory & flow)

Redis (Geo indexing)

Real-world industry practices

System Design Thinking

🎯 Who Should Watch?
Aspiring Backend Developers

Students preparing for LLD/System Design rounds

Java & Spring Boot Engineers

Anyone curious about how food delivery works at scale

✨ Don’t just write backend — think like an architect.
🔥 Drop a comment if you want the Spring Boot + Kafka version next!
📌 Subscribe for more real-world projects & LLD deep dives!

[anoopmaurya]

Make Java Playlist ❤❤ or Java collections please mam

[Dayi]

Hey didi session was very informative... could you make a video on dynamic programming too

[DesignKarle]

Which camera are you using, it works really well.

[abhaysharma]

Hi Mrunmai, absolutely wonderful video!
Could you please let me know where I can get the UML diagram and the code?

[Real_Life]

Next video please make on dream 11 backend full architecture