How GitHub Actions Pipelines Actually Work, Explained Simply

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A developer education piece published on DEV Community uses a fictional senior-junior engineer dialogue to break down what happens after a developer runs git push. When code is pushed, GitHub stores the new commits, updates the branch pointer, and fires an internal push event to notify any registered listeners. GitHub Actions operates on a similar principle to webhooks, where an event triggers a configured receiver to take action. The system then checks the repository for YAML workflow files inside the .github/workflows/ directory to determine whether any pipeline should run. If no matching workflow files exist or none are configured to trigger on a push event, no pipeline starts and the process ends silently.

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ProgrammingDEV Community ·

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