eBook – Guide Spring Cloud – NPI EA (cat=Spring Cloud)
eBook – Mockito – NPI EA (tag = Mockito)
👁 announcement - icon
Mocking is an essential part of unit testing, and the Mockito library makes it easy to write clean and intuitive unit tests for your Java code.
Get started with mocking and improve your application tests using our Mockito guide:
eBook – Java Concurrency – NPI EA (cat=Java Concurrency)
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Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
Get started with understanding multi-threaded applications with our Java Concurrency guide:
eBook – Reactive – NPI EA (cat=Reactive)
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Spring 5 added support for reactive programming with the Spring WebFlux module, which has been improved upon ever since. Get started with the Reactor project basics and reactive programming in Spring Boot:
eBook – Java Streams – NPI EA (cat=Java Streams)
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Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.
But these can also be overused and fall into some common pitfalls.
To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:
eBook – Jackson – NPI EA (cat=Jackson)
eBook – HTTP Client – NPI EA (cat=Http Client-Side)
eBook – Maven – NPI EA (cat = Maven)
eBook – Persistence – NPI EA (cat=Persistence)
eBook – RwS – NPI EA (cat=Spring MVC)
Course – LS – NPI EA (cat=Jackson)
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Get started with Spring and Spring Boot, through the Learn Spring course:
>> LEARN SPRINGCourse – RWSB – NPI EA (cat=REST)
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Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:
Course – LSS – NPI EA (cat=Spring Security)
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Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.
I built the security material as two full courses - Core and OAuth, to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project.
You can explore the course here:
Course – LSD – NPI EA (tag=Spring Data JPA)
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Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot.
Get started with Spring Data JPA through the guided reference course:
Partner – Moderne – NPI EA (cat=Spring Boot)
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Refactor Java code safely — and automatically — with OpenRewrite.
Refactoring big codebases by hand is slow, risky, and easy to put off. That’s where OpenRewrite comes in. The open-source framework for large-scale, automated code transformations helps teams modernize safely and consistently.
Each month, the creators and maintainers of OpenRewrite at Moderne run live, hands-on training sessions — one for newcomers and one for experienced users. You’ll see how recipes work, how to apply them across projects, and how to modernize code with confidence.
Join the next session, bring your questions, and learn how to automate the kind of work that usually eats your sprint time.
Course – LJB – NPI EA (cat = Core Java)
In the previous article, we were focusing on EC2; now, let’s move on to the Relational Database Service.
Content Series:
This article is part of a series: • Spring Cloud AWS – S3
• Spring Cloud AWS – EC2
• Spring Cloud AWS – EC2
• Spring Cloud AWS – RDS (current article)
• Spring Cloud AWS – Messaging Support1. RDS Support
1.1. Simple Configuration
Spring Cloud AWS can automatically create a DataSource just by specifying the RDS database identifier and the master password. The username, JDBC driver, and the complete URL are all resolved by Spring.
If an AWS account has an RDS instance with DB instance identifier as spring-cloud-test-db having master password se3retpass, then all that’s required to create a DataSource is the following line in application.properties:
cloud.aws.rds.spring-cloud-test-db.password=se3retpassThree other properties can be added if you wish to use values other than the RDS default:
cloud.aws.rds.spring-cloud-test-db.username=testuser
cloud.aws.rds.spring-cloud-test-db.readReplicaSupport=true
cloud.aws.rds.spring-cloud-test-db.databaseName=test1.2. Custom Datasource
In an application without Spring Boot or in cases where custom configurations are required, we can also create the DataSource using the Java-based configuration:
@Configuration
@EnableRdsInstance(
dbInstanceIdentifier = "spring-cloud-test-db",
password = "se3retpass")
public class SpringRDSSupport {
@Bean
public RdsInstanceConfigurer instanceConfigurer() {
return () -> {
TomcatJdbcDataSourceFactory dataSourceFactory
= new TomcatJdbcDataSourceFactory();
dataSourceFactory.setInitialSize(10);
dataSourceFactory.setValidationQuery("SELECT 1");
return dataSourceFactory;
};
}
}Also, note that we need to add the correct JDBC driver dependency.
2. Conclusion
In this article, we had a look at various ways of accessing AWS RDS service; in the next and final article of the series, we’ll have a look at AWS Messaging support.
The code backing this article is available on GitHub. Once you're logged in as a Baeldung Pro Member, start learning and coding on the project.
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Spring Cloud AWS – EC2
