Struct PoolConfig 

pub struct PoolConfig {
    pub enabled: bool,
    pub min_idle: usize,
    pub max_size: usize,
    pub max_concurrent_boots: usize,
    pub idle_ttl_secs: u64,
    pub scaling: ScalingPolicy,
    pub snapshot_fork: bool,
}

Warm pool configuration for pre-booted VMs.

Fields

enabled: bool

Enable warm pool (default: false)

min_idle: usize

Minimum number of pre-warmed idle VMs to maintain

max_size: usize

Maximum number of VMs in the pool (idle + in-use)

max_concurrent_boots: usize

Maximum number of VM boots that may run concurrently during pool fill. A bounded value prevents a large warm pool from exhausting host CPU and memory while retaining parallel startup for independent VMs.

idle_ttl_secs: u64

Time-to-live for idle VMs in seconds (0 = unlimited)

scaling: ScalingPolicy

Autoscaling policy for dynamic min_idle adjustment

snapshot_fork: bool

Fill the pool by snapshot-fork instead of cold boot: boot ONE template VM once, snapshot it, then replenish every other slot by restoring that snapshot (MAP_PRIVATE CoW) — turning per-VM fill from a full cold boot (~1.7s) into a restore (~tens of ms). All same-image pool VMs share one RAM image.

Trait Implementations

impl Clone for PoolConfig

fn clone(&self) -> PoolConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PoolConfig

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

Formats the value using the given formatter.

impl Default for PoolConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PoolConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PoolConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.