Struct PoolConfig 

pub struct PoolConfig {
    pub pool_size: u32,
    pub min_connections: u32,
    pub acquire_timeout: Duration,
    pub idle_timeout: Duration,
    pub max_lifetime: Duration,
    pub max_message_len: usize,
}

Connection pool tuning.

These values can also be supplied in the connection URL (pool_size, min_connections, acquire_timeout, idle_timeout, max_lifetime); a PoolConfig passed to crate::Pool::connect overrides the URL.

Fields

pool_size: u32

Maximum number of connections in the pool.

min_connections: u32

Connections to open eagerly when the pool is created, and the floor the idle reaper will not drop below.

This is best-effort: if some connections cannot be established the pool starts with fewer, and the floor is not replenished if connections are lost or expire.

acquire_timeout: Duration

How long crate::Pool::get waits for a connection before failing.

idle_timeout: Duration

Close a connection after this long without use.

max_lifetime: Duration

Close a connection this long after it was created.

max_message_len: usize

Largest accepted backend message, in bytes, for connections created by this pool. Overrides the URL’s max_message_len when a PoolConfig is supplied explicitly.

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.