Mean Time to Repair (MTTR) is a DORA metric that represents the average time it takes to address and resolve an issue in an application once it has been detected. A low MTTR indicates that issues are being resolved quickly, leading to better system reliability and uptime. On the other hand, a high MTTR can signify inefficiencies in the incident management and resolution processes, potentially impacting user experience and business operations.
For example, if a web application experiences a critical error that causes downtime, the MTTR would measure the average time it takes for the team to identify and fix the issue, ultimately restoring the application's functionality. By tracking and analyzing MTTR, teams can identify bottlenecks in their incident management processes and work towards improving their response and resolution times.