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Patch request – Spring boot

Hello. In this tutorial, we will create a simple restful spring boot application and understand the implementation of the patch endpoint request. 1. Introduction PATCH is used when we want to apply the partial update to the resource and does not want to update the entire resource. @PatchMapping annotation is used in spring for mapping the HTTP PATCH requests onto ...

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Spring qualifier annotation

Hello. In this tutorial, we will create a simple hello world spring boot application and understand the usage of Qualifier annotation. 1. Introduction @Qualifer annotation in spring is used to identify beans of the same type. It is also used to annotate the custom annotations that behave as qualifiers. 2. Spring boot qualifier annotation Let us dive into some practice ...

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Spring Boot @Scheduled Annotation Example

Hello. In this tutorial, we will explain the Scheduled annotation in a spring boot application. 1. Introduction @Scheduled annotation in spring boot allows to schedule jobs in the applications. This annotation internally uses the task scheduler interface for scheduling the annotated methods for execution. To set up the spring boot scheduler we need to understand the following – @EnableScheduling – ...

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DB Integration Tests with Spring Boot and Testcontainers

Hello. In this tutorial, we will explore the Testcontainers to perform integration tests for the jpa repositories in a Spring Boot app. You can also check this tutorial in the following video: Spring Boot and Testcontainers – Video 1. Introduction Testcontainers is a library that provides a clean way for writing the integration and end-to-end tests for the jpa repositories. ...

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Spring Boot MapStruct Example

Hello. In this tutorial, we will explore the mapstruct in a spring boot application. 1. Introduction 1.1 Mapstruct Mapstruct is an annotation-based code generator that simplifies the mapping implementations between the java beans. The code is generated via the plain method invocation and thus it is fast, type-safe, and easy to understand. It is often used in the multi-tiered application ...

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What are Microservices?

Hello. In this tutorial, we will explain what microservices are and how to use them. 1. Introduction Microservices in their real meaning is to develop a single application as a suite of independent small applications where each small application (known as microservice) runs its process and communicates with each other in the lightest way possible (such as with the help ...

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Spring Boot Application Deployment on Heroku

Welcome, in this tutorial, we will see how to deploy a simple spring boot application on the Heroku platform. 1. Introduction Before going further in this tutorial, let us understand Spring Boot. Spring boot is a module that provides rapid application development feature to the spring framework including auto-configuration, standalone-code, and production-ready code It creates applications that are packaged as ...

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Spring Boot with Caffeine Cache

Welcome, in this tutorial, we will see how to integrate Caffeine cache in a Spring boot application. Caffeine is a high-performance java8 based caching library and is similar to the in-memory cache provided by google guava api. 1. Introduction Before going further in this tutorial, we will look at the common terminology such as introduction to Spring Boot and Lombok. ...

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How to encrypt passwords in a Spring Boot project using Jasypt

Welcome, in this tutorial, we will learn how to encrypt passwords in a Spring Boot project using Jasypt. We will see how to secure the file-sensitive information in a spring boot application using the Jasypt dependency. 1. Introduction Before going further in this tutorial, we will look at the common terminology such as introduction to Spring Boot, Jaspypt, and Lombok. ...

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Cache with Spring Boot and Hazelcast

Welcome, in this tutorial, we will implement a Hazelcast Cache example in a Spring Boot app. Hazelcast is used to implement the cache in a distributed environment. This cache mechanism approach offers reliable performance and effective consistency. Hazelcast is a distributed, highly available, and scalable caching mechanism. 1. Introduction Before going further in this tutorial, we will look at the ...

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