cache

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
	// InstanceTypesZonesAndOfferingsTTL is the time before we refresh instance types, zones, and offerings at EC2
	InstanceTypesZonesAndOfferingsTTL = 5 * time.Minute
	// 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
	// ValidationTTL is time to check authorization errors with validation controller
	ValidationTTL = 30 * time.Minute
)

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
)