...
Two new metrics and corresponding sensors will be added to track request-time and throttle-time of each quota entity for quota type Request. The request-time sensor will be configured with the quota for the user/client so that quota violations can be used to add delays to the response. Quota window configuration will be the same as the existing configuration for produce/fetch quotas: 1 second windows with 11 samples retained in memory by default.
Metrics and sensors will be expired as they are today for Produce/Fetch quotas.
...