Struct CircuitBreakerConfig 

pub struct CircuitBreakerConfig {
    pub failure_threshold: u32,
    pub success_threshold: u32,
    pub error_rate_threshold: f64,
    pub window_secs: u64,
    pub open_cooldown_secs: u64,
    pub half_open_max_probes: u32,
    pub command_failure_threshold: u32,
    pub open_cooldown_max_secs: u64,
}

Circuit breaker configuration.

Fields

failure_threshold: u32

Consecutive failures to open circuit.

success_threshold: u32

Consecutive successes to close circuit.

error_rate_threshold: f64

Error rate threshold (0.0-1.0) to open circuit.

window_secs: u64

Rolling window size in seconds.

open_cooldown_secs: u64

Cooldown duration before half-open (seconds).

half_open_max_probes: u32

Max concurrent probes in half-open.

command_failure_threshold: u32

Consecutive command-class failures to open the circuit.

Command-class evidence is an operation of the same shape as dispatched work — a remote binary that must run to completion (the telemetry poll, or a health probe whose session connected but whose command never finished). It is tracked separately from the plain liveness probe because a host under fork exhaustion or swap thrash keeps answering echo over a warm connection while every real command times out; interleaved liveness successes would otherwise keep resetting failure_threshold and the breaker would never trip.

open_cooldown_max_secs: u64

Upper bound (seconds) for the open cooldown after repeated reopens.

Each Open -> HalfOpen -> Open cycle without an intervening Closed doubles the cooldown (open_cooldown_secs, x2, x4, …) up to this cap, so a flapping worker converges to Open instead of being re-admitted every cooldown. Set equal to open_cooldown_secs to disable the backoff.

Implementations

impl CircuitBreakerConfig

pub fn cooldown_ms_for_streak(&self, reopen_streak: u32) -> u64

Effective cooldown (ms) for the given reopen streak, with exponential backoff capped at open_cooldown_max_secs. reopen_streak counts Open transitions since the circuit last closed (1 = first open).

Trait Implementations

impl Clone for CircuitBreakerConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CircuitBreakerConfig

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

Formats the value using the given formatter.

impl Default for CircuitBreakerConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CircuitBreakerConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CircuitBreakerConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.