Containerized Microservices

Microservices and container technologies have become hot trends in application development these days. Microservice architectures used in combination with containers allows developers to decouple services into smaller functional pieces and containers extend this decoupling, separating software from the underlying hardware.

A container is an isolated, resource controlled, and portable operating environment, where an application can run without touching the resources of other containers, or the host. Therefore, a container looks and acts like a newly installed physical computer or a virtual machine.

The advantage of a container-oriented development and deployment approach is that it eliminates most of the issues that arise from inconsistent environment setups and the problems that come with them. In addition, containers permit fast application scale-up functionality by instancing new containers as required.

Let us look at how to build a docker container from a sample spring boot application.

Once you build a spring boot application, add Dockerfile(In the project root folder) with below content to build docker image.

Build docker image like below

Once you issue docker images command you will see the new created docker image.

Your spring boot application will start once you run the docker image.

Now you can export this image to docker hub and anyone can pull this image and run this spring boot application without making any environment setup(Only you need to install docker software).

Thanks,

Keep learning.. :)