Flaky tests hide real regressions
A single flaky test masks three genuine failures on average. Quarantine fast, fix faster.
Caching the wrong layers costs hours
Dependencies change daily. Your cache key should too — or every build starts from zero.
Parallel jobs without dependencies deadlock
Map your workflow graph first. A missing requires key turns speed into gridlock.
Silent rollbacks erode trust in every deploy
Each rollback should trigger an incident thread. If the team can't explain it, users won't trust it.