What are Spring Boot Devtools

Spring boot is the most popular framework with an abundance of features. It is useful for many developers to gain development experience. Spring boot gives developers the perfect ability to set up and run service efficiently.

If you want to work with the spring framework, Spring boot developers can utilize the ideal tool. To boost development experience, spring introduces spring boot dev tools. It is an important part of spring boot 1.3. You can understand the benefits of using such a tool and attain ideal functionality. 

  • It acts as a developer tool that enhances development time when working with the spring boot application.
  • With devtools, you can look at changes and restart the application.
  • You can execute devtools in a project with dependency in the pom.xml file.
  • Developers attain new functionality when using devtools.
  • Spring boot is vital in the spring framework the main aim is the auto-configuration feature.
  • It is a great option to develop the application as fast as possible.
  • The Devtools library is an important feature in spring boot.

It gives developers ideal development time tools that are good for the development process. You can understand the important working of tool and how it makes the development process easier.

Automatic application restart:

With dev tools, developers make changes to java code or properties files. It is easy for the application gets updated with the new change. The tool can monitor for changes and restart the application automatically. Devtools in the application classpath can load the application in different class loaders in a java virtual machine.

One class loader holds all the dependencies that applications require. It only changes sometimes. The second class loader includes actual property files, Java code, and others, particularly in src/main/ path that change frequently. 

When noticing a change, the tool fills only the above class loader by restarting the spring application context and goes away another class loader, JVM intact. It will decrease the amount of time to begin an application.

The tool also offers a great way to configure a global setting that never couple with any application. The file may also name as .spring-boot-devtools-properties and locate at $HOME. Whether it does not configure manually, a default will use by the tool.

When it comes to automatic application restart, a change to dependencies is never available. A respective class loader can never load automatically. After making changes to dependencies, you can restart the application manually and gain changes in effect.

Automatic browser refresh:

If you make some changes to the code and save them, you can click the refresh button on the browser and see the effect. The process is completely time-consuming. It is helpful to achieve the result in the browser and skip the browser refreshing again to minimize development time.

You can Hire Spring boot developers to perform the development process effectively. Devtools help developers by avoiding awkward work. You can enable the live reload server with the application when embedding and utilizing the tool.

  • The livereload server is helpful when attached to the corresponding livereload browser plugin.
  • It makes the browser refresh automatically when changes perform to files that serve directly or indirectly with the browser, like CSS stylesheets, template engines, JavaScript, and a lot more.
  • Livereload comes with browser plugins such as Firefox, Safari and Google Chrome.
  • Edge browsers and Internet Explorer never manage live reload browser plugins.

Automatic disable for template caches:

Spring boot provides different forms of template options such as groovy, free maker, thymeleaf, and others. Templates can configure to cache automatically, and the template result is parsing. No need to reparse with every request that it serves. 

A cached template is challenging to make changes to the template during the application run and check desired changes after the browser refreshes. After applying changes, the cached template will still be in use until you pick up the application.

It makes cached templates poor from a development perspective. You can handle the spring framework project and Hire Spring boot developers to improve functionality. Devtools aids the developer by automatically hindering all template caching. 

Due to this factor, applied changes will reflect on templates after refreshing the browser. Developers also turn on or off caching of templates by indicating true or false in the properties file. It is also best to override other properties in the same file.

H2 console:

The application also needs an additional database. Spring boot provides you with vital attributes of an embedded H2 database suitable for development. When you add an H2 database dependency in the application build, the tool will enable the H2 console.

Developers can acquire a console from a web browser and get insight. It is easy to overview data that handle by the application. You can point out the web browser if you want to access the console. Adding necessary dependency is vital to embed spring boot dev tools in the application. 


The above things help individuals to understand how the dev tools module makes a developer a better experience and minimize development time. It is an impressive solution to automate a different range of activities.

Read More: Does Spring Boot Provides Equalizer?

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