Agility: Cycle time
Velocity: resolve the issues as fast as possible, while being aligned with quality standards.
Cycle time should be around 5-6 days.
How an indicator is measured
Cycle time = average duration of issues in following states: in progress, code review, testing, acceptance, deployed.
If Cycle time is high, the cost of issues implementation is high. It usually signals a mediocre preparation of the sprint.