Delve into creating REST APIs with Spring Framework, integrating databases with JPA, implementing Aspect-Oriented Programming, unit testing, and documenting with Springfox, and monitoring with Spring Boot Actuator.

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In this advanced-level course, you’ll learn to create REST APIs using the Spring Framework. The course gives a detailed experience in designing, implementing, and documenting REST APIs with end-to-end features like database integration and monitoring.

Firstly, you'll set up a Spring Boot project and create fully-functional REST APIs to manage your to-do lists. Secondly, you’ll learn database integration using Spring Data JPA and consume APIs using various tools such as cURL, Postman, and the Swagger UI. Thirdly, you'll learn Aspect-Oriented Programming (AOP) in Spring and Unit test the APIs using Spring Framework. Lastly, you’ll learn to document APIs using Springfox and Spring REST Docs and monitor them using the Spring Boot Actuator. 

By the end of this course, you'll be confident to design, implement, and document REST APIs end-to-end using the Spring Framework, including advanced topics like AOP, Unit Testing, and Monitoring.

REST APIs with Spring, JPA, and Springfox

Now that our repositories are ready, we can use them in the business layer, which is also called services. 

Spring allows dependency injection(DI), through which the container injects dependencies (beans) into other objects providing inversion of control (IoC).

There are numerous advantages to achieving IoC through DI:

* Separation of the task execution and its implementation.
* Selection of different implementations by working with abstractions.
* Better modularity.
* Ease in testing isolated components by mocking their dependencies.

# Inject the `TodoRepository` into `TodoService`

Let’s learn to use repositories in the business layer to provide CRUD features.

Introduction to Spring Boot

Develop REST APIs

Database Integration With Spring Data JPA

REST APIs With Spring Data REST

Aspect Oriented Programming

Spring Framework Testing

Consuming APIs

API Documentation With Swagger

API Documentation Using Spring REST Docs

Spring Boot Actuator

Wrapping Up

Setup Services

What is dependency injection?

Inject the