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What is Continuous Delivery?
sobes.tech AI
Answer from AI
Continuous Delivery (CD) is a software development methodology that focuses on the ability to quickly, safely, and reliably deliver changes to the production environment. The main principle is to always have a release-ready artifact that can be deployed at any time.
Main components:
- Automated build: Code is built and packaged automatically with each commit.
- Automated testing: Includes unit, integration, system, and other types of tests to verify the quality of changes.
- Automated deployment: The process of delivering the artifact to various environments (development, testing, staging, production) is automated.
- Delivery pipeline: Visualization of the workflow through which changes pass from commit to production, including building, testing, and deployment.
Key difference from Continuous Deployment:
In Continuous Delivery, the release to production is a manual step (though it can be done at any moment), whereas in Continuous Deployment, this step is also automated after successful testing and verification.
Advantages:
- Reduced time to market.
- Lower risks during releases due to frequent and small changes.
- Improved quality through intensive automated testing.
- Better feedback from users.
- Increased team efficiency through automation of routine operations.
Tools (examples):
- Version control systems: Git
- Build systems: Maven, Gradle, npm
- CI/CD servers: Jenkins, GitLab CI, GitHub Actions, CircleCI
- Testing tools: JUnit, TestNG, Selenium, Cypress
- Configuration management tools: Ansible, Chef, Puppet
- Containerization platforms: Docker, Kubernetes
CD requires a strong culture of automation, DevOps practices, and close collaboration between developers, testers, and operations teams.