Detecting, preventing, and resolving performance regressions has been a standard at Pinterest for many years. Over the years, we have seen many examples showing significant business metric movements…

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Pinterest Engineering

This post discusses the Performance Program at Pinterest, including the importance of detecting and preventing performance regressions, the use of Pinner Wait Time (PWT) metrics, and the ownership and responsibilities of surface-owning teams. It also provides a glimpse into the tooling and processes for regression detection.

Web Performance Regression Detection (Part 1 of 3)