Halving Your CI Pipeline – Practical Optimisation Strategies
watch on portal.gitnation.org ↗https://portal.gitnation.org/contents/halving-your-ci-pipeline-practical-optimisation-strategiessummary
A practical playbook for cutting CI time and cost: concrete steps taken to shrink a Merge Train pipeline from ~60 to ~22 minutes (≈64% reduction) while raising CI pass rates from the low 80s to low 90s. Covers migrating compute instances (with 10-run benchmark data per configuration), extracting service tests, optimizing CloudWatch, enabling linter caching, detecting flaky tests, and performing cost analysis — each optimisation shown with before/after metrics, cost impact, and trade-offs, plus a prioritisation framework for applying these techniques.
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