Struct HaConfig 

pub struct HaConfig {
    pub failover_enabled: bool,
    pub failover: Option<FailoverConfig>,
    pub rate_limit_threshold: f64,
    pub rate_limit_queue_timeout_ms: u64,
    pub circuit_breaker_error_threshold: f64,
    pub circuit_breaker_half_open_probes: u32,
    pub trace_sample_rate: f64,
    pub trace_otlp_endpoint: Option<String>,
}

高可用配置聚合（v7.3.0）

统一驱动故障转移、限流熔断、健康检查、追踪四项高可用能力。 failover_enabled 默认 false，不改变单库行为。

Fields

failover_enabled: bool

是否启用故障转移（默认 false，单库行为不变）

failover: Option<FailoverConfig>

故障转移配置（failover_enabled=false 时为 None）

rate_limit_threshold: f64

限流阈值（每秒请求数，0 表示不限）

rate_limit_queue_timeout_ms: u64

限流排队超时（毫秒，默认 100）

circuit_breaker_error_threshold: f64

熔断错误率阈值 ∈ (0,1)，默认 0.5

circuit_breaker_half_open_probes: u32

半开探测请求数（≥ 1）

trace_sample_rate: f64

追踪采样率 ∈ [0,1]

trace_otlp_endpoint: Option<String>

OTLP 导出端点（None 表示不导出）

Implementations

impl HaConfig

pub fn validate(&self) -> Result<(), DbError>

校验配置合法性

pub fn builder() -> HaConfigBuilder

创建 builder

Trait Implementations

impl Clone for HaConfig

fn clone(&self) -> HaConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HaConfig

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

Formats the value using the given formatter.

impl Default for HaConfig

Available on crate feature auto-failover only.

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for HaConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for HaConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.