While DORA metrics track deployment speed and stability, they miss real-world performance issues that arise post-deployment. Load testing fills this gap, exposing regressions and bottlenecks that only emerge under scale. In 2025, DevOps teams must track 10 key load metrics—including error ratio, TCP timeouts, TLS handshake failures, response-time percentiles, and full business-process duration—to ensure both velocity and resilience. Without these, systems risk user churn, outages, and brand damage. Gatling helps teams implement these metrics, turning load testing into a strategic asset that accelerates delivery, boosts efficiency, and enhances user experience.

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