GitHub Actions, GitLab CI, and Jenkins Tested Side by Side on Identical Pipelines

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A software developer compared three major CI/CD platforms — GitHub Actions, GitLab CI/CD, and Jenkins — by running the exact same API test suite across all three to ensure a fair evaluation. The test suite, built with Jest and Supertest, consisted of eight integration tests with full code coverage, executed on every code push. All three pipeline configurations were published together in a single public GitHub repository, mirroring a real-world scenario where teams run multiple CI tools in parallel during migrations. Key differences examined included configuration style, hosting models, dependency caching, artifact management, and ecosystem support. GitHub Actions stood out for its reusable Marketplace actions and elegant matrix builds, while GitLab CI/CD offered native coverage parsing and Docker-first reproducibility.

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ProgrammingDEV Community ·

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