Struct PoolPrewarmConfig 

pub struct PoolPrewarmConfig {
    pub min_size: usize,
    pub max_size: usize,
    pub timeout_secs: Option<u64>,
}

Configuration for connection pool construction and pre-warming.

Controls the minimum guaranteed connections (pre-warmed at startup), the maximum pool ceiling, and the wait/create timeout for connection acquisition.

Example

use fraiseql_db::postgres::PoolPrewarmConfig;

let cfg = PoolPrewarmConfig {
    min_size:     5,
    max_size:     20,
    timeout_secs: Some(30),
};

Fields

min_size: usize

Number of connections to establish at pool creation time.

After the pool is created, min_size connections are opened eagerly so they are ready when the first request arrives. Set to 0 to disable pre-warming (lazy init — one connection from the startup health check).

max_size: usize

Maximum number of connections the pool may hold.

timeout_secs: Option<u64>

Optional timeout (in seconds) for connection acquisition and creation.

Applied to both the wait (blocked waiting for an idle connection) and create (time to open a new TCP connection to PostgreSQL) deadpool slots. When None, acquisition can block indefinitely on pool exhaustion.

Trait Implementations

impl Clone for PoolPrewarmConfig

fn clone(&self) -> PoolPrewarmConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PoolPrewarmConfig

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

Formats the value using the given formatter.