metricName property

Name of the Amazon GameLift-defined metric that is used to trigger a scaling adjustment. For detailed descriptions of fleet metrics, see Monitor Amazon GameLift with Amazon CloudWatch.

ActivatingGameSessions -- Game sessions in the process of being created.
ActiveGameSessions -- Game sessions that are currently running.
ActiveInstances -- Fleet instances that are currently running at least one game session.
AvailableGameSessions -- Additional game sessions that fleet could host simultaneously, given current capacity.
AvailablePlayerSessions -- Empty player slots in currently active game sessions. This includes game sessions that are not currently accepting players. Reserved player slots are not included.
CurrentPlayerSessions -- Player slots in active game sessions that are being used by a player or are reserved for a player.
IdleInstances -- Active instances that are currently hosting zero game sessions.
PercentAvailableGameSessions -- Unused percentage of the total number of game sessions that a fleet could host simultaneously, given current capacity. Use this metric for a target-based scaling policy.
PercentIdleInstances -- Percentage of the total number of active instances that are hosting zero game sessions.
QueueDepth -- Pending game session placement requests, in any queue, where the current fleet is the top-priority destination.
WaitTime -- Current wait time for pending game session placement requests, in any queue, where the current fleet is the top-priority destination.

Implementation