cache

Documentation

Index

• Constants
• type UnavailableOfferings
  • func NewUnavailableOfferings() *UnavailableOfferings
  • func (u *UnavailableOfferings) Delete(instanceType ec2types.InstanceType, zone string, capacityType string)
  • func (u *UnavailableOfferings) Flush()
  • func (u *UnavailableOfferings) IsUnavailable(instanceType ec2types.InstanceType, zone, capacityType string) bool
  • func (u *UnavailableOfferings) MarkUnavailable(ctx context.Context, unavailableReason string, ...)
  • func (u *UnavailableOfferings) MarkUnavailableForFleetErr(ctx context.Context, fleetErr ec2types.CreateFleetError, capacityType string)

Constants

const (
	// DefaultTTL restricts QPS to AWS APIs to this interval for verifying setup
	// resources. This value represents the maximum eventual consistency between
	// AWS actual state and the controller's ability to provision those
	// resources. Cache hits enable faster provisioning and reduced API load on
	// AWS APIs, which can have a serious impact on performance and scalability.
	// DO NOT CHANGE THIS VALUE WITHOUT DUE CONSIDERATION
	DefaultTTL = time.Minute
	// UnavailableOfferingsTTL is the time before offerings that were marked as unavailable
	// are removed from the cache and are available for launch again
	UnavailableOfferingsTTL = 3 * time.Minute
	// InstanceTypesAndZonesTTL is the time before we refresh instance types and zones at EC2
	InstanceTypesAndZonesTTL = 5 * time.Minute
	// InstanceProfileTTL is the time before we refresh checking instance profile existence at IAM
	InstanceProfileTTL = 15 * time.Minute
	// AvailableIPAddressTTL is time to drop AvailableIPAddress data if it is not updated within the TTL
	AvailableIPAddressTTL = 5 * time.Minute
	// AvailableIPAddressTTL is time to drop AssociatePublicIPAddressTTL data if it is not updated within the TTL
	AssociatePublicIPAddressTTL = 5 * time.Minute
	// SSMGetParametersByPathTTL is the time to drop SSM Parameters by path data. This only queries EKS Optimized AMI
	// releases, so we should expect this to be updated relatively infrequently.
	SSMCacheTTL = 24 * time.Hour
	// DiscoveredCapacityCacheTTL is the time to drop discovered resource capacity data per-instance type
	// if it is not updated by a node creation event or refreshed during controller reconciliation
	DiscoveredCapacityCacheTTL = 60 * 24 * time.Hour
)

const (
	// DefaultCleanupInterval triggers cache cleanup (lazy eviction) at this interval.
	DefaultCleanupInterval = time.Minute
	// UnavailableOfferingsCleanupInterval triggers cache cleanup (lazy eviction) at this interval.
	// We drop the cleanup interval down for the ICE cache to get quicker reactivity to offerings
	// that become available after they get evicted from the cache
	UnavailableOfferingsCleanupInterval = time.Second * 10
)

Types

type UnavailableOfferings

type UnavailableOfferings struct {
	SeqNum uint64
	// contains filtered or unexported fields
}

UnavailableOfferings stores any offerings that return ICE (insufficient capacity errors) when attempting to launch the capacity. These offerings are ignored as long as they are in the cache on GetInstanceTypes responses

func NewUnavailableOfferings

func NewUnavailableOfferings() *UnavailableOfferings

func (*UnavailableOfferings) Delete

func (u *UnavailableOfferings) Delete(instanceType ec2types.InstanceType, zone string, capacityType string)

func (*UnavailableOfferings) Flush

func (u *UnavailableOfferings) Flush()

func (*UnavailableOfferings) IsUnavailable

func (u *UnavailableOfferings) IsUnavailable(instanceType ec2types.InstanceType, zone, capacityType string) bool

IsUnavailable returns true if the offering appears in the cache

func (*UnavailableOfferings) MarkUnavailable

func (u *UnavailableOfferings) MarkUnavailable(ctx context.Context, unavailableReason string, instanceType ec2types.InstanceType, zone, capacityType string)

MarkUnavailable communicates recently observed temporary capacity shortages in the provided offerings

func (*UnavailableOfferings) MarkUnavailableForFleetErr

func (u *UnavailableOfferings) MarkUnavailableForFleetErr(ctx context.Context, fleetErr ec2types.CreateFleetError, capacityType string)