DevOps Classroom notes 18/Oct/2023

Continuous Integration

• This practice is recommended to avoid integration failures during later stages of the project
• Big bang integrtion leads to lot of technical debts.
• Continuous integration ideal workflow
  
• The idea of Continuous integration is do give immedieate feedback to the developer.

Unit Tests

• This generally represents smaller tests which test functionality at a unit level.
• Developers are responsible for developing unit tests
• With every change done by developer all the unit test needs to be executed and reports should be shown.
• For executing unit tests, each platform has multiple tools
  • java: junit
  • dotnet: mstest, nunit
  • javascript: mocha, jasmine
  • python: pytest
• We need to show the test results with every change.
• Code Coverage tools should be included with test runs and code quality reports.
• Some organizations fail the builds based on these results which are often represented as Quality Gates.
• Notify the team via email/slack/teams the results of the build.
• CI pipelines start from source code repositories and end with artifact repository

Terms

• Repository: This represents a storage and it also has ability to store versions and history of changes.
• Source Code Repository: This repository is used for storing code. This maintains history of every change that is done
  • Examples:
    • Git
    • Subversion
    • TFC
    • Perforce
• Artifact: Result of the build.
• Artifact Repository or Package Repository: This respository is used for storing packages/artifacts
  • Examples:
    • Jfrog/Artficatory
    • Nexus
    • Docker:
      • Container registries

Activity

• YAML Refer Here