Struct PoolConfig 

pub struct PoolConfig {
    pub min_size: usize,
    pub max_size: usize,
    pub idle_timeout: Duration,
    pub max_lifetime: Duration,
    pub max_waiters: usize,
    pub circuit_breaker_threshold: usize,
    pub circuit_breaker_timeout: Duration,
}

Configuration for connection pooling

Fields

min_size: usize

Minimum connections to maintain (pre-warmed)

max_size: usize

Maximum idle connections kept in the pool. A connection released while the pool already holds this many is closed instead of being kept.

idle_timeout: Duration

Time-to-live for idle connections before eviction

max_lifetime: Duration

Maximum lifetime of a connection regardless of idle time, measured from when the connection was created (reuse does not reset it)

max_waiters: usize

Maximum concurrent waiters for connections (backpressure limit)

circuit_breaker_threshold: usize

Circuit breaker: consecutive failures before opening

circuit_breaker_timeout: Duration

Circuit breaker: time to wait before trying again

Implementations

impl PoolConfig

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

Validate configuration parameters

Trait Implementations

impl Clone for PoolConfig

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 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.