Define user-focused SLIs to evaluate daily GKE game releases. Which metrics do you use?

For user-focused Service Level Indicators (SLIs) in a gaming release scenario, you need metrics that directly reflect the user experience. Request latency measures how quickly the game responds to user actions, directly impacting playability. Error rate indicates how often user requests fail, which directly affects user satisfaction and the ability to play the game. CPU utilization and memory utilization are system-level metrics, useful for monitoring infrastructure health but not direct indicators of user experience. While high utilization can cause latency or errors, they don't measure the user's perception of those issues. Server uptime is a foundational metric, but a server can be up and still deliver a poor user experience due to high latency or errors.