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Kafka Topics, Partitions & Consumer Groups Explained 🚀 | Rebalancing Deep Dive with Spring Boot

Welcome to Backend Verse 🌿!
In this video, we’ll deep dive into Kafka Topics, Partitions, Consumer Groups, and Rebalancing with a hands-on Spring Boot example. 🚀

Ever wondered:
👉 What are Kafka Topics & how do they store messages?
👉 How do Partitions help in scalability?
👉 What exactly are Consumer Groups & why are they powerful?
👉 What happens when a new consumer joins – how does Rebalancing work?

We’ll break everything down with real-world analogies and Spring Boot integration. 🔥

📝 What You’ll Learn
📌 Kafka Topics & Partitions explained
⚡ Role of Consumer Groups in scaling consumers
🔑 Kafka Rebalancing deep dive (step-by-step)
🏷️ Hands-on Kafka with Spring Boot
💡 Real-world scenarios & best practices

🎯 Why Watch This Video?
✔️ Master Kafka’s core concepts with clarity
✔️ Learn Rebalancing – one of the trickiest Kafka topics
✔️ Understand Spring Boot Kafka consumer setup
✔️ Prepare for Kafka interviews with confidence

🔧 Tools & Technologies Used
Java 17
Spring Boot
Zookeeper
Apache Kafka
Gradle
IntelliJ IDEA
Docker
Docker Compose

Time Stamps

00:00 - Intro & What You'll Learn
01:44 - Create Topic in Spring Boot
02:30 - Consumer Groups Explained (4 Consumers: 2 per Group)
05:48 - Kafka Rebalancing
09:40 - Consumer Group Practical Test (Running Consumer JAR)
12:55 - Publish to a Specific Partition (Code)
15:35 - Publish to a Specific Partition (Practical Test with Consumer JAR)
16:19 - How to Publish to a Specific Partition (Spring Boot Producer Code)
19:12 - Message Ordering with Partition Key (Concept)
19:55 - Message Ordering with Partition Key (Spring Boot Code)
23:44 - Full Recap: Kafka in 30 Minutes 🚀
24:25 - What's Next in This Series

🔗 GitHub Code
👉 https://github.com/backendverse/sprin...
👉 https://github.com/backendverse/sprin...

👉 Watch the full Spring Boot series here:    • Spring Boot Tutorial Series in Hindi 🌿 — S...  

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👉 Watch the full Spring Boot Redis series here:    • Spring Boot with Redis 🔥 | Caching, @Cache...  

👉 Watch the full Apache Kafka series here:    • Kafka Tutorials in Hindi 🔥| Beginners to P...  

👉 Watch the full Java 8 series here:    • Java 8 full course in Hindi  

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