metrics packages contains metrics which are exposed from the HPA controller.

NewDefaultHPARateLimiter creates a rate limiter which limits overall (as per the default controller rate limiter), as well as per the resync interval.

NewFixedItemIntervalRateLimiter creates a new instance of a RateLimiter using a fixed interval.

NewHorizontalController creates a new HorizontalController.

NewReplicaCalculator creates a new ReplicaCalculator and passes all necessary information to the new instance.

FixedItemIntervalRateLimiter limits items to a fixed-rate interval.

HorizontalController is responsible for the synchronizing HPA objects stored in the system with the actual deployments/replication controllers they control.

NormalizationArg is used to pass all needed information between functions as one structure.

ReplicaCalculator bundles all needed information to calculate the target amount of replicas.