“Why Are My Tests So Slow?” A List of Likely Suspects, Anti-Patterns, and Unresolved Personal Trauma

Lead time to deploy, defined as the interval between code writing and production deployment, is crucial for high-performing teams, with a target of under fifteen minutes being ideal. Achieving this requires maintaining high engineering standards, regular pipeline optimization, and creative problem-solving tailored to specific environments. While not universally feasible due to varying tech stacks and regulatory constraints, any reduction in lead time yields significant benefits. Strategies include instrumenting build pipelines with spans and traces, optimizing test execution, minimizing unnecessary builds, and managing dependencies efficiently. Despite challenges, striving for reduced lead times enhances team productivity and collaboration.