What is Spring Boot?
Spring Boot is an open-source micro-framework It provides Java developers with a platform to get started with an auto configurable production-grade Spring application. With it, developers can get started quickly without losing time on preparing and configuring their Spring application.
What is spring?
The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications on any kind of deployment platform.
A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
What’s the Difference Between Spring and Spring Boot?
Spring Boot is built on top of the Spring framework, and it comes with many dependencies that can be plugged into the Spring application. Some examples are Spring Kafka, Spring LDAP, Spring Web Services, and Spring Security. However, developers have to configure each building brick themselves using a lot of XML configuration files or annotations.
The Spring framework focuses on providing flexibility through its dependency injection feature. It helps to inject the required dependencies quickly but also to develop your application in a loosely coupled fashion. Some other benefits include: -
A lightweight framework.
Helps with loose coupling dependencies and testability. The modular architecture allows you to pick the parts you need and isolate them.
Has support for both XML and annotation configuration.
Provides abstraction on ORM software to develop the ORM persistence logic.
Compatible with many middleware services.
Supports the JDBC framework, which improves productivity and reduces errors.
Important features of Spring Boot
Autoconfiguration: Developers can automatically configure their Spring application. However, Spring Boot is also capable of changing the configuration based on the dependencies you list. For example, when you list “MySQL” as a dependency, it will configure your Spring application with the “MySQL connector” included. And if you want to add a custom configuration, you can create a class that overrides the default configuration for your “MySQL connector”.
Standalone: There’s no need to deploy your application to a web server. You simply enter the run command to start the application.
Opinionated: On the official page, we find that Spring Boot decides for you which defaults to use for the configuration. Also, it decides which packages to install for the dependencies you require. For example, if you include the Spring Boot starter “pom” for “JPA”, it will autoconfigure an in-memory database, a hibernate entity manager, and a simple data source. This is an example of an opinionated default configuration that you can override. While some developers might feel this is too opinionated, Spring Boot’s opinionated setup helps developers to get started quickly on their projects.
Some additional benefits of Spring Boot:
Reduces development time and increases the overall productivity of the development team.
Helps you autoconfigure all components for a production-grade Spring application.
Makes it easier for developers to create and test Java-based applications by providing a default setup for unit and integration tests.
Avoids writing lots of boilerplate code, annotations, and XML configuration.
Comes with embedded HTTP servers like Tomcat or Jetty to test web applications.
Adds many plugins that developers can use to work with embedded and in-memory databases easily. Spring allows you to easily connect with database and queue services like Oracle, PostgreSQL, MySQL, MongoDB, Redis, Solr, ElasticSearch, Rabbit MQ, ActiveMQ, and many more.
Allows admin support—meaning you can manage via remote access to the application.
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