Enum ScaleSpec 

pub enum ScaleSpec {
    Adaptive {
        min: u32,
        max: u32,
        cooldown: Option<Duration>,
        targets: ScaleTargets,
        behavior: Option<ScaleBehavior>,
        triggers: Vec<ScaleTrigger>,
        idle_window: Option<Duration>,
        vertical: Option<VerticalScaleSpec>,
        predictive: Option<PredictiveSpec>,
    },
    Fixed {
        replicas: u32,
    },
    Manual,
}

Scaling configuration

Variants

Adaptive

Adaptive scaling with metrics

Fields

min: u32

Minimum replicas (may be 0 to enable scale-to-zero)

max: u32

Maximum replicas

cooldown: Option<Duration>

Cooldown period between scale events

targets: ScaleTargets

Target metrics for scaling

behavior: Option<ScaleBehavior>

Scale-up/scale-down velocity & stabilization behavior.

Mirrors the Kubernetes HPA v2 behavior field: bounds how fast replicas may be added/removed and how long recent recommendations are remembered to prevent flapping. Defaults to a conservative symmetric policy when omitted.

triggers: Vec<ScaleTrigger>

Event-driven scaling triggers (KEDA-style scalers: queue depth, Kafka lag, cron windows, Prometheus queries). The desired replica count is the maximum across all triggers and metric targets. A non-zero trigger gates wake-from-zero. Consumed in Phase 2.

idle_window: Option<Duration>

Idle window after which a service with min: 0 scales to zero. None disables scale-to-zero even when min == 0. Consumed in Phase 2.

vertical: Option<VerticalScaleSpec>

Vertical (right-sizing) autoscaling for this service’s containers. Consumed in Phase 3.

predictive: Option<PredictiveSpec>

Predictive/proactive scaling that establishes a forecast-driven replica floor ahead of anticipated load. Consumed in Phase 4.

Fixed

Fixed number of replicas

Fields

replicas: u32

Manual

Manual scaling (no automatic scaling)

Trait Implementations

impl Clone for ScaleSpec

fn clone(&self) -> ScaleSpec

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScaleSpec

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for ScaleSpec

fn default() -> ScaleSpec

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ScaleSpec

fn deserialize<__D>( __deserializer: __D, ) -> Result<ScaleSpec, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ScaleSpec

impl PartialEq for ScaleSpec

fn eq(&self, other: &ScaleSpec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ScaleSpec

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ScaleSpec