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Hello guys, if you want to learn Microservice architecture and look for free Microservice resources like free online courses, you have come to the right place.

Earlier, I have shared the best Microservice courses to build Microservice using Java and the Spring framework, and today, I will share some free courses to learn Microservice in Java using Spring Boot and the Spring Cloud framework.

If you don't know, Microservices is a modern architecture that goes along nicely with cloud computing and makes deployment, scaling, and even development easier.

It provides a new way to deploy your Java application where a monolithic Java application is broken down into multiple, small, independent Java applications which can be developed, deployed, and tested independently.

There are several benefits of following Microservice architecture like, multiple developers can work on multiple processes simultaneously. The build and release process becomes easier as you are only deploying things that you are changing.

Another great thing about Microservice is that it goes hand-in-hand with the cloud. They are easier to scale and often deployed using containers like Docker, which makes the deployment easier which can also be automated using Kubernetes for further scaling.

With an increased push to move towards Cloud-based Architecture, Microservice is getting a lot of traction and becoming popular every passing day. It has now become an essential skill for Java developers.

When developing Microservice-based applications in Java, the Spring framework offers the best solution to create, maintain, and deploy enterprise-scale Microservices. Microservices allow extensive systems to be built up, from several small collaborating components.

If you look closely, it follows the Spring model of component-based development. Microservice is built using a small process that collaborates to do what you indent do. Spring also does the same where the application is made of small, collaborating components, Java classes, or Spring beans. This loosely coupled design offers many benefits which powered modern software development.

By the way, If you are keen on Microservice development using Spring Boot and Spring Cloud, then I highly recommend Master Microservices with Spring Boot and Spring Cloud course on Udemy. It's not free but quite affordable, and you can buy it for just $10 on Udemy sales.

6 Best Free Microservices Courses for Beginners in 2023

Without wasting any more of your time, here is a list of free online courses you can join to learn Microservice architecture and build them using Spring Boot, Spring Cloud, and RxJava framework. These free courses have been created by experts like Red Hat training, Google Cloud Training and are trusted by thousands of developers.

They are also offered by popular online websites like Udemy and Coursera and are ideal for Java developers who want to learn about Microservices. They are equally useful for both beginners and developers with some Microservice knowledge and experience.

1. Master Spring Microservices with Spring Boot & Spring Cloud!

This is one of the best free courses to learn Microservice with Spring Boot and Spring Cloud on Udemy. This course is created by Karthikeyan T, author of a full-stack Java course that I have recommended in the past. In this free Microservice course, you will learn about the basics of Microservice architecture.

Once you understand the basics, you will develop a mini Microservice App using Spring Boot and Spring cloud, where you will create several services like Pricing Service, Inventory Service, Currency Conversion Service to build a Microservice architecture. This course is great to gain some hands-on experience in developing Microservices for FREE.

If you already know Spring boot and a little bit of Spring cloud, then you will learn quickly, but even if you don't, you will still gain a lot of useful information free of cost. I highly recommend this course to anyone who wants to learn Microservice in Java with Spring.

2. Develop a reactive Java microservice with ReactiveJ

This is another free Udemy course to learn Microservice in Java. The difference between the previous course and this course is that it uses ReactiveJ and RxJava to build Reactive Microservice in Java instead of Spring Boot and Spring Cloud.

In this course, you will learn the main concepts of reactive programming, and we're going to develop a reactive microservice with Java, ReactiveJ, and RxJava2. This course is suitable for beginners.

Here are the main things you will learn in this course

Reactive programming
JSR 340 and servlets 3.1 specification
advantages of reactive programming
non-blocking embedded Jetty
ReactiveJ non-blocking and asynchronous library
develop of asynchronous and blocking app with ReactiveJ
develop an asynchronous and non blocking app with ReactiveJ and RxJava2

If you don't know, Spring Boot and Spring Cloud is not the only way to develop Microservice; you also have other options like RxJava, Quarkus, MicroNaut, and much more. This free course is great to explore another option for building Microservice in Java.

3. Developing Cloud-Native Apps w/ Microservices Architectures

This is another free Microservice course from Udemy which can be used to find the proper frameworks and tools to build your microservices architecture in Java. This course is created by Red Hat Inc, one of JBoss's patrons and creator of RedHat Linux.

In this official Red Hat® training course, Burr Sutter, the Chief Developer Advocate for Red Hat, will give you a deep dive into the microservices architecture.

here are key skills you will learn in this course:

1. basics of executing a microservices architecture.

2. Learn how to deploy a variety of microservices frameworks through a DevOps pipeline.

This course is designed for programmers and developers who want to combine different frameworks and tools with building a Microservice architecture for their organization.

It's also great for anyone seeking an understanding of the OpenShift and Kubernetes tool and platform.

4. Microservice Architecture and System Design with Python & Kubernetes – Full Course

If you are looking for a free course where you can learn and develop Microservice using python programming language then this free course is for you.

In this free freeCodeCamp course you will learn about software design and microservices.

This course provides a hands-on approach to learning about microservice architectures and distributed systems using Python, Kubernetes, RabbitMQ, MongoDB, MySQL.

Here is list of all the topics covered in this free YouTube course
⭐️ Contents ⭐️
(0:00:00) Intro
(0:01:02) Overview
(0:02:47) Installation & Setup?
(0:10:16) Auth Service Code
(0:32:25) Auth Flow Overview & JWTs
(0:53:04) Auth Service Deployment
(0:56:08) Auth Dockerfile
(1:20:05) Kubernetes
(1:37:26) Gateway Service Code
(1:42:34) MongoDB & GridFs
(1:47:04) Architecture Overview (RabbitMQ)
(1:49:50) Synchronous Interservice Communication
(1:50:49) Asynchronous Interservice Communication
(1:53:19) Strong Consistency
(1:54:07) Eventual Consistency
(2:19:16) RabbitMQ
(2:21:16) Gateway Service Deployment
(2:35:34) Kubernetes Ingress
(2:46:28) Kubernetes StatefulSet
(2:51:18) RabbitMQ Deployment
(3:09:35) Converter Service Code
(3:33:43) Converter Service Deployment
(4:21:09) Checkpoint
(4:22:11) Update Gateway Service
(4:31:46) Notification Service Code
(4:43:24) Notification Service Deployment
(4:51:55) Sanity Check
(5:05:54) End

You can watch this course right here, or you can watch it on YouTube:

5. Software Design and Microservices

This is a more fundamental course than whatever we have seen so far. If you are a complete beginner to Microservice, I suggest you start with this free course. This course is great to learn about how to design a highly available, fault-tolerant, secure, and scalable distributed system.

In this short free course, you will learn how to build software that will be scalable, more secure, and have high availability. The instructor discusses system design patterns by using an example of a parking lot system, one of the popular system design questions asked in Tier-A software companies.

This course also includes OS concepts like concurrency, race condition, and locking, which will design distributed systems. So, it's not just useful to learn Microservices but also other key design elements which are crucial to designing a robust, secure, and scalable production system.

6. Building Scalable Java Microservices with Spring Boot and Spring Cloud

This is another free course to learn Microservices for Java developers with Spring Boot and Spring Cloud. The best thing about this course is that it is available in Coursera and it offered by Google Cloud, so you will be learning from best in the Industry.

This course will learn how to build Java applications using Spring Boot and Spring Cloud on Google Cloud Platform.

You'll use Cloud Runtime Configuration and Spring Cloud Config to manage your application's configuration. You'll send and receive messages with Cloud Pub/Sub and Spring Integration.

You'll also use Cloud SQL as a managed relational database for your Java applications and learn how to migrate to Cloud Spanner, which is Google Cloud's globally distributed, strongly consistent database service. You'll also learn about tracing and debugging your Spring applications with Stackdriver.

To get the most out of this course, you should be familiar with the Java programming language and build Java applications using Maven or Gradle. You should also have general knowledge of the Google Cloud Platform.

That's all about my favorite free Microservice courses for beginners and experienced in 2023. If you want to learn more about Microservice architecture or want to build a Microservice application using Spring Boot, Spring Cloud, and RxJava, then you can join these free Udemy and Coursera courses to learn these in-demand and useful skills.

The best thing about learning Microservice architecture and development is that both Microservice and Cloud go hand-in-hand. Due to the increased push on cloud-native development, Microservice is also becoming popular every passing day. Now is the best time to start learning Microservice, and these free online courses are best to start with.

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Thanks for reading this article so far. If you find these best free Microservice courses from Udemy and Coursera useful, please share them with your friends and colleagues. If you have any questions, feedback, or other fee courses to add to this list, please feel free to suggest.

P. S. - If you want to learn Microservice development using Spring Boot and Spring Cloud, I highly recommend you check out Ranga's Master Microservices with Spring Boot and Spring Cloud course on Udemy. It's not free but quite affordable, and you can buy it for just $10 on Udemy sales. More than 90K Java programmers have already benefited from it. Probably the best course to learn Microservices in 2023.

My Favorite Free Courses to Learn Microservices in Depth