pub struct AutoscaleConfig {
pub enabled: bool,
pub high_water_points: u64,
pub standby_urls: Vec<String>,
pub interval_secs: u64,
pub cooldown_secs: u64,
pub max_shards: usize,
}Expand description
Opt-in automatic scale-out policy for the coordinator (ADR-0065 increment 5).
When enabled, the coordinator samples each shard’s point count and, when the
busiest crosses high_water_points, grows the cluster by joining one of the
standby_urls — driving the same safe online migration as a manual
POST /cluster/shards/grow. An explicit policy, not magic: nothing scales
without a configured threshold and a standby to grow into, a cooldown bounds the
rate, and a migration in flight is never interrupted. Scale-in is deliberately
not automated here (a safe online drain is a separate increment); shrink
stays a manual, drained DELETE /cluster/shards/{id}.
Fields§
§enabled: boolTurn the policy on. Default false.
high_water_points: u64Per-shard point-count high-water mark: when any shard exceeds it, scale out.
0 disables scale-out even when enabled.
standby_urls: Vec<String>Pool of standby shard base URLs to grow into, consumed one per scale-out.
interval_secs: u64How often to sample the load signal, in seconds.
cooldown_secs: u64Minimum seconds between scale actions (hysteresis), so a migration settles before another can be triggered.
max_shards: usizeHard cap on the shard count the policy will grow to. 0 = no cap.
Trait Implementations§
Source§impl Clone for AutoscaleConfig
impl Clone for AutoscaleConfig
Source§fn clone(&self) -> AutoscaleConfig
fn clone(&self) -> AutoscaleConfig
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl Debug for AutoscaleConfig
impl Debug for AutoscaleConfig
Source§impl Default for AutoscaleConfig
impl Default for AutoscaleConfig
Source§impl<'de> Deserialize<'de> for AutoscaleConfigwhere
AutoscaleConfig: Default,
impl<'de> Deserialize<'de> for AutoscaleConfigwhere
AutoscaleConfig: Default,
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Auto Trait Implementations§
impl Freeze for AutoscaleConfig
impl RefUnwindSafe for AutoscaleConfig
impl Send for AutoscaleConfig
impl Sync for AutoscaleConfig
impl Unpin for AutoscaleConfig
impl UnsafeUnpin for AutoscaleConfig
impl UnwindSafe for AutoscaleConfig
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