What Is Docker and Why Are Developers Using It

Today’s container hype, Docker, founded by Solomon Hykes in 2010, becomes an open-source project making applications’ development, deployment, and operation inside isolated containers possible. While it can be a process running the background, it can also be a client command. Typically, it’s a virtual machine but with less duplication, saving as much resource as you can lightening up a specific virtualization process. All of this may sound like jargon, but let’s simplify it into the following elements:

  • Dockers create an isolated set of program specific to an application preventing an overlap of inputted commands that overwhelms a program or software.
  • Going for a docker is beneficial to use in setting up an environment conducive for local usage and development since it doesn’t duplicate the virtualized resource. The operating system lightens up in that regard making the running process shorter, therefore faster.
  • Also, the Docker performs in a modular way, making it easier to run different versions and instances of the same program without going through special configurations preventing port collisions.
  • Because Docker is a platform to anyone, contribution to its development becomes full of potential in which ideas are saturated in building new features for better improvement, there are many examples like an ultimate Kafka docker, for all the neds of a Kafka engineer, accessible on docker.
  • Why developers use it is because they get the chance to focus on writing code without worrying whether it will fun or not. Due to the portability of applications, repeated application runs can be done on any other computer ran by Docker.
  • Docker is consistent in providing the right environment for you in honing your application from start to finish, making it conveniently possible for you to run your program from the starting point as necessary.
  • Developers are using this because it is great for business of all sizes. When working on a code even for a small business, it makes it possible to run it in sync avoiding the cliched issue “But it works in this machineā€¦”
  • Ease updating software, additional business features and quick production became possible with the help of Docker containers. At the same time, it allows a quick roll back to its previous version if solicited and needed. Releases can be easily accessed; if you purchase a Kafka UI software, its updates can be easily grabbed from docker, making your Kafka UI download easy.
  • The most benefit you get from using Docker Containers probably is the way it gets everything done. It allows operations of multiple applications on multiple gadgets. As it configures and installs the image being worked on, it allows a user to be productive on Day 1 of usage.
  • Using a Docker container runs a program on isolation from the file system, the network and other running processes, making it follow a layered file system. With a base image, to begin with, every change made to an image or a container becomes a new add-on layer to the filing system. Then that’s how the layered systems are cached, reducing the repetitive steps while Docker build process happened. The Docker build also reduces the time it requires get uploaded. On the other hand, the same goes when downloading similar images.

Finally, using Docker reduces cost because applications are portable, enabling it to run flexibly. As it allows other machines to run the applications, it increases resource use per server, reducing the number of systems required.

There are still developers that do not understand how Docker usage is beneficial in so many ways. Some might be using other tools too. And this becomes the biggest barrier to Docker usage, current knowledge base. It takes time to adjust from weaning off from virtual machines but give a chance to Dockerized development solution. It allows every change you make to have a stable starting point as you develop your application.