DevOps and CI/CD

Study Notes

Definition: A development practice where code changes are automatically built, tested, and verified
Goals:
- Reduce integration problems
- Improve code quality
- Reduce time-to-market
Key practices:
- Automate the build process
- Run automated tests
- Use continuous integration tools (e.g., Jenkins, Travis CI)
Benefits:
- Faster feedback loop
- Improved collaboration
- Reduced errors and bugs

Definition: A lightweight and portable way to deploy applications
Key concepts:
- Containers: Isolated, ephemeral, and portable environments
- Images: Templates for creating containers
- Volumes: Persistent storage for data
Containerization tools:
- Docker: Most popular containerization platform
- Kubernetes: Container orchestration system
Benefits:
- Isolation and portability
- Efficient use of resources
- Simplified deployment and scaling

Definition: A version control system for tracking changes in code
Key concepts:
- Repositories (repos): Centralized storage for code
- Commits: Snapshots of code changes
- Branches: Isolated lines of development
Git workflow:
1. Create a local repository
2. Make changes and commit them
3. Push changes to a remote repository
Git benefits:
- Version control and tracking
- Collaboration and branching
- Flexibility and scalability

Code changes are automatically built, tested, and verified to reduce integration problems and improve code quality.
Goals of CI include reducing time-to-market and improving collaboration.
Automating the build process, running automated tests, and using continuous integration tools like Jenkins and Travis CI are key practices.
CI provides a faster feedback loop, improves collaboration, and reduces errors and bugs.

Containerization is a lightweight and portable way to deploy applications, providing isolated, ephemeral, and portable environments.
Key concepts include containers, images, and volumes, with Docker being the most popular containerization platform.
Kubernetes is a container orchestration system, providing efficient use of resources, isolation, and portability.
Benefits of containerization include simplified deployment and scaling.

Git is a version control system for tracking changes in code, with repositories (repos) serving as centralized storage for code.
Key concepts include commits, which are snapshots of code changes, and branches, which are isolated lines of development.
The Git workflow involves creating a local repository, making changes and committing them, and pushing changes to a remote repository.
Git benefits include version control and tracking, collaboration and branching, and flexibility and scalability.