Flow Town: a map of the work behind software delivery
Flow Town is a free interactive map of Enablement Engineering: find where your software delivery is stuck, or choose your next DevOps specialisation.
CI/CD & Testing
Articles on CI pipelines and test automation: slow CI, flaky tests, test selection, merge queues, keeping main green and DORA metrics.
2026
Merge queues: how many changes can you land at once?
Merge queues automate rebasing and testing PRs at scale, with batching, speculative checks, and bisection tradeoffs explained through failure-rate math.
Test selection: the tests you didn't need to run
Fix slow CI with test selection: test impact analysis, only-changed flags and Meta's Predictive Test Selection skip the tests a change can't break.
Keep main green: block bad changes or chase failures
A discussion on CI/CD strategies to keep main green: block bad changes with a merge gate, or land them fast and chase failures with automated bisection and rollback. Or blend both!
A short series on Test Automation
Slow CI and flaky tests feel like the price of quality. DORA research shows speed and stability move together. A series on test automation strategies.
56 Repositories, 5 Hours and $80: How I automated a large-scale update with AI
A reproducible AI-assisted workflow for large-scale migrations across many repositories, with Renovate and Claude. 56 repositories, 5 hours, $80.