In this post, We will learn about Health check indicators of Spring Boot. Spring boot makes health checks easier for us by providing opinionated /actuator/health endpoint. Spring Boot Health actuator The HealthEndpoint of spring-boot-starter-actuator module collects Health information for any beans that are defined as HealthIndicator. For a simple web application, there are two HealthIndicator beans Auto-Configured by default. And they are for Ping health check and…
In this post, we will learn each part of Spring Boot project Structure and its conventions. Spring Boot is an opinionated view of how a Spring-based application should be implemented. Given that a lot of these opinions are on how Spring features should be used, Spring boot also emphasises the structure of the spring boot…
Let’s learn how to install a spring boot as a Linux service. Requirements You will need, Basics of running a spring boot application Understanding linux services and file system. 15 minutes of your time. Make the jar an executable Spring boot applications can be started using the command java -jar hello-world.jar. We have seen this behavior in the posts How…
Traditionally, the flow of business logic depends on the statically defined objects and their dependents. This approach creates tightly coupled applications that are hard to extend or modify. But with IOC containers, the business logic depends on the object graph built by an IOC container. So what is an IOC Container? Inversion Of Control(IoC) is…
Every spring boot application has the @SpringBootApplication annotation on its main class. On contrary to popular belief, it is not just there to inform that the application is a spring boot application. Let’s take a deep dive into what this annotation is and how it works with some examples. Introduction The @SpringBootApplication annotation is there…
In this post, We will learn about converting Spring Boot JAR to WAR file. We know that Spring Boot produces a fat JAR That helps You to start the app by running java -jar <your jar file>. We can deploy these JARs with ease. But in unavoidable situations, you may need a WAR file. Each application runs on a separate port….
In this post, We will learn about start and stop shell scripts to run Spring Boot applications. Spring boot applications are easier to build and run. However, there is one small problem. Most of the developers still struggle when it comes to running, stopping, and starting the application in production servers. The traditional applications were deployed…
Spring Boot Starters add or change the behavior of an application. Starters do this through opinionated defaults and auto-configurations. Background In a traditional web application, The developers will have to do the following stuff. Write a spring-context.xml to define the beans required. Write definitions for your database configuration. Define MVC configuration and their mappings/filters/etc. Create a web.xml to…
Let’s build a Hello World web application using Spring Boot. We will go through step by step to learn how to do this. Generate A Spring Boot Project There are multiple ways to set up a Spring Boot application. However, the easiest way to do it is via Spring Initializer. Open the Spring Initializer page…
Let us talk about the infamous N+1 selects problem in hibernate entities and how to solve it with some examples. You may have also heard it as an N+1 queries problem in some places. What is the N+1 selects problem? The N+1 selects problem is a performance anti-pattern where an application makes N+1 small queries to the…
