DEVOURED
Cutting CI pipeline time by 64%: What actually works in production
An engineering team slashed Merge Train pipeline times by 64% by offloading tests to faster hardware and separating service from browser-based integration tests.
What: The team reduced CI duration from 60 to 22 minutes while expanding test coverage by 90%, despite a 10% increase in infrastructure spend.
Why it matters: This demonstrates that targeted hardware upgrades and intelligent test suite partitioning often provide better ROI than blanket pipeline optimization.
Takeaway: Benchmark your CI test suite to isolate slow browser-based tests, then split them into parallelized runs or separate pipelines to decrease feedback latency.
Decoder
- Merge Train: A CI/CD feature in platforms like GitLab that queues multiple merge requests, testing them in sequence to ensure they don't break the main branch.
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