AI/ML, Cloud Computing, Data Analytics

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Accelerate CI/CD Workflow Innovation with CircleCI


Time is crucial for software developers, and CI/CD (Continuous Integration/Continuous Delivery) is pivotal in time management. CI/CD automates the software development pipeline, allowing developers to integrate code changes seamlessly, run automated tests, and deploy applications rapidly. This automation significantly reduces manual intervention, accelerates the feedback loop, and identifies issues early in development. With CI/CD, developers can release software updates more frequently, leading to faster delivery cycles, improved collaboration, and enhanced overall productivity. By streamlining workflows and minimizing manual tasks, CI/CD enables software developers to focus on innovation, code quality, and efficient problem-solving, ultimately saving valuable time in the software development lifecycle.

  1. Benefits of Continuous Integration (CI):
  • Developers merge code changes often.
  • Run automated tests to validate builds.
  • Only tested code is integrated into a code base.
  • Merge changes frequently into a release branch.

2. Benefits of Continuous Deployment (CD):

  • Faster release
  • Low risk release
  • High quality
  • Low cost

Circle CI

CircleCI is a continuous integration and continuous delivery (CI/CD) platform that automates the software development process.

It helps development teams streamline and accelerate the delivery of applications by automating tasks such as building, testing, and deploying code changes. CircleCI integrates with version control systems like Git, Bitbucket, etc., automatically triggering workflows in response to code commits.

Developers define their build and deployment processes in a configuration file, allowing consistent and reproducible workflows. CircleCI supports containerization and parallel execution and allows teams to efficiently manage their CI/CD pipelines. CircleCI helps manage change faster so software developers can be innovative and more productive. CircleCI performs builds, tests, and deployments using intelligent automation between CI and CD.

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Where can CircleCI fit into the Software Development Workflow?

Assume a user is working on a code change and pushed the change to VCS once done with the change. The CircleCI monitors that code base for changes. When CircleCI observers a change, it will kick off a workflow in the following order:

  • Build – set up the runtime environment for our software, dependency libraries that our software needs, etc.
  • Test – Runs automated tests basically, it runs the unit tests that we have in our project to make sure the code is of higher quality before deploying to production.
  • Deploy – Push that software as a package to the docker hub.

To use CircleCI, you first link your software repository from a supported version control system (VCS) to your ‘’ account. When you make changes to your code, CircleCI automatically runs tests in a clean environment, using separate containers or virtual machines for each task. Once the tests finish, CircleCI sends you an email notifying you whether they were successful.

Key Features of CircleCI

Some of the key features of CircleCI are:

  • Configuration as Code: CircleCI allows you to define your CI/CD pipeline configurations as code. This means the steps and settings for building, testing, and deploying your software are in a configuration file, typically named ‘.circleci/config.yml’. Storing the configuration as code ensures version control, easy collaboration, and reproducibility across different environments.
  • Offer cloud-based service: CircleCI is a cloud-based CI/CD service hosted on remote servers rather than your local infrastructure. This cloud-based approach simplifies setup and maintenance, providing scalability and accessibility. Developers can trigger builds and deploy applications without managing the underlying infrastructure.
  • Orbs: Orbs are packages of configuration elements that can be reused across different projects. They encapsulate complex configurations, making sharing and standardizing common CI/CD practices easier. Orbs can include commands, executors, and jobs, simplifying configuration and promoting consistency across projects.
  • Parallelism: Parallelism in CircleCI refers to splitting your build and test processes into parallel jobs that can run simultaneously. This feature significantly reduces the time it takes to complete the entire pipeline, as tasks can be executed concurrently. It’s especially beneficial for large projects or those with resource-intensive tasks.
  • Docker support: CircleCI provides robust support for Docker. This means that your builds and tests can run in isolated environments, ensuring consistency across different stages of development. Docker support allows developers to package their applications and dependencies, making reproducing environments and managing dependencies easier.
  • Notifications: CircleCI offers various notification mechanisms to keep developers informed about the status of their builds. This includes email notifications sent after each build and integrations with communication tools like Slack and IRC. These notifications help teams stay updated on the success or failure of their CI/CD processes.
  • Insights and analytics: CircleCI provides insights and analytics to help teams understand and optimize their CI/CD pipelines. This includes information on build times, success rates, and resource utilization. Analytics tools offer visibility into the efficiency of the development process, enabling teams to identify bottlenecks and make data-driven improvements.

Steps to set up an existing GIT repository in Circle CI

  1. Create ‘.circleci/config.yml’: Create a ‘.circleci’ directory in the root of your repository and create a file named ‘config.yml’ inside it. This file will define your CI/CD pipeline.

Sample Code:

  1. Commit and Push: Commit the ‘.circleci’ directory, ‘config.yml’ file and push the changes to your GIT repository.
  2. Set Up Project in CircleCI:
  • Go to ‘’ website.
  • Log in with your version control provider (GitHub, in this case).
  • Click on “Add Projects” in the left sidebar.
  • Find your repository in the list and click “Set Up Project”.
  • CircleCI will automatically detect your config.yml. If it doesn’t, make sure the file is correctly placed.

4. Trigger a Build: Change your code and push it to your repository. CircleCI will automatically detect the change and trigger a build according to the configuration in ‘config.yml’.

5. Monitor Build: Visit the CircleCI dashboard to monitor the progress of your build. You’ll see information about each step in your pipeline.


CircleCI is like a smart assistant for software developers. It helps them build, test, and deliver their code faster and with fewer mistakes. When developers change their code, CircleCI automatically checks it, runs tests, and even deploys it if everything looks good. This automation saves time and ensures that the software works well. CircleCI seamlessly fits into the development process, making it easier for teams to collaborate and deliver high-quality software efficiently.

Drop a query if you have any questions regarding CircleCI and we will get back to you quickly.

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1. What are the various platforms supported by CircleCI?

ANS: – CircleCI may be configured to deploy code to various environments, including (but not limited to):

  • Amazon S3
  • Amazon EC2 Container Service (ECS)
  • Google Cloud Platform (GCP)
  • Azure Container Registry
  • Heroku
  • Firebase
  • Android
  • iOS

2. Who can add a repository already existing in a VCS to CircleCI as a project?

ANS: – Only the Project Administrator can add an existing VCS project in CircleCI.

WRITTEN BY Yaswanth Tippa

Yaswanth Tippa is working as a Research Associate - Data and AIoT at CloudThat. He is a highly passionate and self-motivated individual with experience in data engineering and cloud computing with substantial expertise in building solutions for complex business problems involving large-scale data warehousing and reporting.



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