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Spring Boot 4 Microservices & REST APIs

Master the art of building scalable and resilient microservices and REST APIs using Spring Boot 4, from foundational concepts to advanced cloud deployment strategies. A CoddyKit learning path of 24 short courses and 93 interactive lessons, with a 24/7 AI tutor at your side.

Courses
24
Lessons
93
Interactive steps
1,126
Free to start
Course 1
Curriculum

24 courses in this path

Every course in the Spring Boot 4 Microservices & REST APIs path, in learning order. The first one is free.

1

A13 lessonsFree

Kickstart your journey with Spring Boot by learning to set up projects and build your very first RESTful web services. Understand the core principles of HTTP methods and status codes.

2

A24 lessonsPRO

Master externalized configuration, profiles, and property binding for flexible Spring Boot apps.

3

B14 lessonsPRO

Understand the Spring container, bean scopes, and the full lifecycle of managed beans.

4

B16 lessonsPRO

Dive into data management by integrating databases with Spring Boot using Spring Data JPA. Learn to define entities, create repositories, and perform CRUD operations.

5

B14 lessonsPRO

Expose health, metrics, and operational endpoints with Spring Boot Actuator.

6

B14 lessonsPRO

Validate requests and return clean, consistent error responses across your API.

7

B13 lessonsPRO

Containerize your Spring Boot microservices using Docker. Learn to create Dockerfiles, manage multi-container applications with Docker Compose, and understand container orchestration concepts.

8

B14 lessonsPRO

Generate interactive, always-up-to-date API docs with SpringDoc and OpenAPI.

9

B23 lessonsPRO

Understand and implement robust security measures for your microservices. Learn about OAuth2, JWT, and how to secure individual REST endpoints with role-based access control.

10

B23 lessonsPRO

Elevate your API design skills by implementing robust validation, pagination, and sorting. Explore HATEOAS principles for creating more discoverable and maintainable REST APIs.

11

B24 lessonsPRO

Write reliable unit, slice, and integration tests for Spring Boot applications.

12

B24 lessonsPRO

Go beyond basic repositories with specifications, projections, and auditing.

13

B24 lessonsPRO

Speed up applications with declarative caching backed by Redis.

14

B24 lessonsPRO

Process large jobs and run scheduled work reliably with Spring Batch and the scheduler.

15

B23 lessonsPRO

Understand the fundamental concepts of microservices architecture, including how to decompose monolithic applications. Explore basic inter-service communication and event-driven patterns.

16

B23 lessonsPRO

Establish robust monitoring and logging practices for your microservices. Learn to implement centralized logging with the ELK stack, health checks, metrics, and alerting.

17

B24 lessonsPRO

Manage configuration for many microservices from one central, versioned source.

18

C13 lessonsPRO

Explore building event-driven microservices using Apache Kafka. Learn to create producers and consumers, enabling asynchronous and scalable communication between services.

19

C14 lessonsPRO

Build non-blocking, reactive REST APIs using Spring WebFlux and Project Reactor.

20

C14 lessonsPRO

Trace requests across microservices to find bottlenecks and failures.

21

C13 lessonsPRO

Implement crucial microservices patterns like service discovery using Eureka and client-side load balancing with Ribbon. Set up an API Gateway using Spring Cloud Gateway to manage incoming requests.

22

C13 lessonsPRO

Explore various cloud deployment strategies for your Spring Boot microservices. Learn to deploy to Kubernetes, leverage serverless functions, and set up a CI/CD pipeline.

23

C23 lessonsPRO

Learn to build fault-tolerant microservices using patterns like Circuit Breakers with Resilience4j. Implement fallbacks, timeouts, and distributed tracing for better observability.

24

C29 lessonsPRO

Master advanced techniques for optimizing the performance and scalability of your microservices. Dive into reactive programming with WebFlux, caching strategies, and database sharding.

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Course Overview

Spring Boot for Microservices and REST APIs

Spring Boot is the standard Java framework for building production-grade REST APIs and microservices. It handles configuration, dependency injection, data persistence, and observability out of the box, so you can focus on application logic instead of boilerplate. This track covers Spring Boot 4 from a first REST endpoint all the way to distributed, cloud-deployed microservices — grounded in the patterns used in real backend systems.

What You Will Learn

You will build and secure REST APIs, manage the full bean lifecycle with dependency injection, and persist data with Spring Data JPA. From there you will add observability with Actuator, validate inputs, handle exceptions globally, and document APIs with SpringDoc OpenAPI. The advanced material covers caching with Redis, batch processing, event-driven architecture with Kafka, reactive programming with WebFlux, distributed tracing with Micrometer and Zipkin, service discovery, and API gateways. The track closes with cloud deployment strategies, resilience patterns, and performance and scalability optimization.

The Learning Path

Twenty-four courses progress from A1 through C2. The opening course covers Spring Boot and REST API fundamentals at A1, followed by configuration, profiles, and the bean lifecycle at A2–B1. The B2 block is the largest: advanced REST API design, security, testing with JUnit, MockMvc and Testcontainers, advanced Spring Data JPA, caching, Spring Batch, centralized config with Spring Cloud Config, and an introduction to microservices architecture. The C1 and C2 courses cover the most demanding topics — event-driven microservices with Kafka, reactive programming with WebFlux, distributed tracing, service discovery, cloud deployment, building resilient microservices, and performance and scalability optimization.

How It Works

Each course is split into short, focused lessons you complete in the built-in code editor with real-time feedback. An AI tutor is available whenever you get stuck, and every concept is reinforced with hands-on exercises rather than passive reading.

How You'll Learn

  1. 01

    Interactive Lessons

    Hands-on coding exercises with real-time feedback

  2. 02

    AI Tutor

    Get instant help from our AI when you're stuck

  3. 03

    Built-in Editor

    Write and run code directly in your browser

  4. 04

    Certificate

    Earn a certificate when you complete the course

FAQ

Frequently Asked Questions

Is the Spring Boot 4 Microservices & REST APIs course free?

Yes. You can start the Spring Boot 4 Microservices & REST APIs course for free and complete its interactive lessons at no cost. An optional PRO subscription unlocks advanced AI tools and a shareable certificate.

Do I need prior experience to learn Java?

No. The course begins with the fundamentals and gradually moves to more advanced topics, so you can start even with no prior Java experience.

How will I learn Java on CoddyKit?

You learn by doing. Short interactive lessons pair a clear explanation with a hands-on coding exercise that runs in real time, and a 24/7 AI tutor gives personalized help whenever you get stuck.

Do I get a certificate for completing Spring Boot 4 Microservices & REST APIs?

Yes. PRO learners can take an exam and earn a shareable certificate of completion with a verifiable code for the Spring Boot 4 Microservices & REST APIs course.

Can I learn Java on my phone?

Yes. CoddyKit is available on the web and as native iOS and Android apps, so you can learn Java on any device and your progress syncs across them.

How much does CoddyKit PRO cost?

The first course of Spring Boot 4 Microservices & REST APIs is free. CoddyKit PRO unlocks every course: $5.90 per week, $7.90 per month, $29.90 per year, or $69.99 once for lifetime access with no renewals.

How long does it take to complete Spring Boot 4 Microservices & REST APIs?

Spring Boot 4 Microservices & REST APIs has 24 courses and 93 lessons. Most lessons take about 5–10 minutes, so the whole path is roughly 11 hours of hands-on practice, at your own pace.

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