We all know that Java is one of the most famous and old programming language in the world , but at the same time it should be taken care that creating complex project is not at all easy task for any of the Java developers . Any complex projects involves use of many technologies and tools which will obviously require multiple environment set up as well as slow speed of project development . This is the point wherein Docker comes into play .
In present world , many organisation and Java developers are using Docker and container based technology . For instance say AT&T , Netflix , Spotify , PayPal and many other tech giants are making use of Docker in their tech stacks .
In this article we are going to discuss what is Docker and how we can make use of it in Java app development .
What Is Docker ?
Developers endeavour to keep their applications isolated as they don't really want to interfere with each other operations and maintenance . This might create a chaos specially when they have to use different packages , libraries and other components .
Docker facilitates developer to package , deploy as well as run apps using containers . Containers facilitates densely packaging up an application with other parts as needed , for instance say libraries and other dependencies and further deploying it in one package . Containers facilitates highly efficient and gritty mechanism which facilitates app components combination as well as it helps to keep them updated and maintained .
Docket architecture consist of various of containers . Architecture of docker consist of many parts including Docker clients , Registry as well as Network and Storage components :
- Clients facilitates developer to work with Docker
- Host gives developers with environment that allows them to run software
- Registry facilitates software engineers with locations which they can make use of for downloading and storing .
- Network facilitates developers to attach containers to networks of dockets
- Storages allows developers to store Docker images and other data
Software developers by using Docker and its components can build container based apps , irrespective of the environment they are dealing ( public cloud , private cloud or personal computers ) . Software developers can simply focus on app logic instead of wasting their time on specific configuration and software versions of the apps .
Another benefit being virtualisation which is based on container which is very lighter than virtual machines . Apart from it , it also facilitates developers to work quickly as no hardware support is required in this case .
Docker For Java Development
Development
Docker container assist in delivering and integrating workflows in continuous environment as well as help in building cost effective and flexible architecture based on cloud .
As a developer you are all aware that setting up development environment individually is very time taking task which requires intervention of several toolsets . Docker containers helps developers to standardise environment irrespective of where developers are willing to run .
If developers are developing Java project without Docket , then they have to install Maven as well as Java development kit on their host machines . However Docket Hub eliminates the use of it and facilitates developers to get Maven images to create , test and run apps .
QA and Testing
Java testing may get complicated if it consist of different versions of Java along with databases and frameworks . Developers can make their test environment much easier by using opportunity to spin up multiple containers on the basis of custom Docker images .
For instance say developers can run Java applications in sets of containers in order to test them in different Java version . By this way developers will be able to fix errors and bugs in developmental environment and hence will make the testing process simpler .
Packaging & Development
By using Docket , development process gets very much simpler for
Java developers . For instance say using Docket container , they can easily run Java applications on target server .
The point herein is developers gets ensured by packing of app in container that it work in test as well as development environment and hence they don't need to install same configurations for different environments .
From above points , it is crystal clear that Docker is good choice for small and medium deployment that necessarily requires high density developmental environment , and it also suitable wherein clients want to extract more with limited number of resources .
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