How to Build Event-driven Microservices with Spring Boot & Kafka

In this tutorial I show you a basic way of building event-driven microservices using Spring Boot and Apache Kafka.

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*Timestamps*
0:00 Intro
0:08 What is Kafka?
1:03 Events
1:23 Domain Model
2:22 The Architecture
5:24 The Events
06:20 Books Publisher Service
08:17 Books Persistence Service
12:55 Notifications Service
13:54 Pre-run Overview
14:48 Run with Docker Compose
18:32 Test REST APIs
20:25 Recap
21:12 Next Up

Thank you for watching!

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[ahmdsaleem]

Great tutorial, devtiro! Your clear, detailed guide on building event-driven microservices with Spring Boot & Kafka is incredibly helpful. You make complex concepts easy to understand. Thanks for sharing your expertise—looking forward to more content like this!

[_ny]

Great video, I've been looking for a spring boot x kafka rundown for a while now and this really ticks all the boxes. Thank you!

[ripple]

dude your videos are so clear, concise and you are very articulate! I would subscribe 1000 times if I could

[BhaaRaThh]

Your help to the community or people really great can say in words. I'm thankful for ever.

[AnantaAkash.Podder]

Devtiro Sir, your truly Underrated and should have many subscribers

[zerocodercool]

You're the man! Thanks for sharing this. You earned a new subscriber!

[Vishal-]

Same guy from the Kafka Basics Tutorial Video

Forget everything I said, You're perfect as is.

[asterixcode]

Great video! Thanks for sharing this!!! The examples, content, approach and teaching process is amazing! Can't wait for more Kafka with Spring boot content... Maybe on how to test it with integation tests :)

[marcinjozwiak]

Great content. I am waiting for more videos regarding software architecture and other approaches like CQRS :)

[farjallahhaythem]

soo greatt more content like this wow ur killing it bro <3 <3

[adebowalegbenga]

Just few minutes into the Tutorial, I'm like this is what i have been looking for...
The proof of concept is top-notch. But why not use Spring cloud stream??

Thanks so much!!

[ryokuuy]

very well explained, can you maybe share about handling concurrent request and or async examples? thank you

[mrowox]

Really nice tutorial. I am more interested in the Devops part of this though. How are you able to have more than one service in a single project. Is this a Monorepo kind of thing. How are you able to deploy the services separately. Is there specific spring configurations for this purpose. Thank you in advance

[hkkabir]

so for notification sending to frontend only kafka is enough? i can see u send the notification to that topic directly so if the frotnend will be the consumer for that notification so it will display on forntend right ??? plz let me clear

[zshn]

How will this exact scenario look like when deployed on AWS infrastructure? Would be great if you could cover it using AWS Lambda, RDS, API Gateway and SNS.

[caffeinejavacode]

I thing it is Publish-Subscriber approach that you have shown.
Event-driven approach is for instance (Event Notification approach)
1. book service got new book
2. then send message NEW_BOOK (not Entity) to TOPIC (NEW_BOOK is our Event that means: "Bro we got new book we have to notify all our friends")
3. book and author get messge NEW_BOOK and realise "Ok then we have to make REST call f.e and find last added book"

microservices io said
Use an event-driven, eventually consistent approach. Each service publishes an event whenever it update its data. Other service subscribe to events. When an event is received, a service updates its data.
It looks you change state in subcriber services (book, author) according to Book entity then your explanation fits definition and it looks like Event Carried state transfer pattern (What do you think)
(If I am mistaken let me know)

[saharhoseini]

Thanks for the brief yet informative video, can I ask how we can debug this services in IntelliJ? I tried mapping the port 5005 for each service in docker-compose and made a remote-debug configuration, but when trying to start debug, I get address already in used :(

[ravi]

Great work, looking forward more from you on these. Keep it up Bro, How can i acces the source code.

[cicciopasticcio]

Have you considered using Kafka Confluent, with avro schema?

[caffeinejavacode]

Is that good way to create domains module and use as one place where we have entity instead has entities in each module (service)