In a detailed exploration of distributed systems and their complexities, the narrative revolves around the fictitious QuickPizza application, highlighting an incident caused by service dependency issues due to increased load. The engineering team, faced with service timeouts, utilized xk6-disruptor, an extension for Grafana k6, to enhance their testing strategies by simulating faults and reproducing conditions that led to the failure. This tool enabled them to implement a retry and backoff mechanism, effectively resolving the issue and allowing for more robust handling of service disruptions. The team demonstrated the benefits of integrating fault injection into their testing suite, which led to a deeper understanding of failure propagation and improved overall system reliability. The success of these measures was validated through testing, which showed a significant reduction in request failures, underscoring the efficacy of using xk6-disruptor for proactive incident management in distributed systems.