In this article, we’ll to learn how to implement the service locator Design Pattern in Spring. We’ll begin with a brief introduction. Next, we’ll introduce an example that benefits from using the pattern. And finally, we’ll work through an implementation in Spring. Introduction: Service Locator Pattern When we begin working with the Spring framework, we run […]Continue reading
You might have heard about GraphQL and how Facebook uses GraphQL in their mobile applications. In this blog, I will show you how to implement GraphQL in a Spring Boot application and let’s see what kind of magic does GraphQL provides. Why GraphQL? If you do not […]Continue reading
1. JdbcTemplate Introduction If we want to perform CRUD operations on a relational database the Spring ecosystem provides Spring Data JPA and Spring Support for JDBC. Spring Support for JDBC focuses on the JdbcTemplate class, which is internally based on the JDBC API of the Java SDK. Anyone who has ever worked with the JDBC […]Continue reading
I’ve previously posted about defining Consumer Driven Contracts using the OpenAPI specification and Spring Cloud Contract. This approach works well because you can tie your contracts to your API specification, and also wire in a request validator into your contract tests. But one problem that remained is typically your OpenAPI specification will span multiple services. […]Continue reading
The Swagger Request Validator is a slick project supported by the folks at Atlassian. Using your API definition in Swagger v2 or OpenAPI v3, it allows you to programmatically validate your API matches your API specification. The Swagger Request Validator may be used standalone, or with Spring MVC, Spring MockMVC, Spring Web Client, REST Assured, […]Continue reading
Spring Framework 5 introduces WebClient, a component in the new Web Reactive framework that helps build reactive and non-blocking web applications. In web applications, a common requirement is to make HTTP calls to other services. Prior to Spring 5, there was RestTemplate for client-side HTTP access. RestTemplate, which is part of the Spring MVC project, […]Continue reading
Working for startups is always an interesting experience. Currently, I’m a software engineer at Velo Payments. If you’ve ever worked for a startup, you’ll quickly see that you get to wear many hats. One of the hats I get to wear is the creation of developer center (currently in the oven). In the very near […]Continue reading
When you are developing Spring Boot applications with database interactions, you typically use Hibernate as the Object Relationship Mapping (ORM) tool. Instead of directly coupling your code with Hibernate, often you’d rather use Spring Data JPA, a Spring Framework project. Spring Data JPA makes implementation of the data access layer incredibly easy by abstracting most […]Continue reading
When developing Spring Boot applications, you need to tell the Spring Framework where to look for Spring components. Using component scan is one method of asking Spring to detect Spring managed components. Spring needs the information to locate and register all the Spring components with the application context when the application starts. Spring can auto […]Continue reading
Introduction I’m quickly becoming a fan of using CircleCI for CI builds. I’m finding that CircleCI is a very powerful platform. Recently, I configured CircleCI to build a Spring Boot Microservice. The microservice was generated by JHipster. CircleCI is a online resource which uses Docker containers to run your CI builds. Since your build is […]Continue reading
