Struct PoolLimits 

pub struct PoolLimits {
    pub max_connections: u32,
    pub idle_timeout: Option<Duration>,
    pub acquire_timeout: Duration,
}

An open Postgres connection pool (sqlx 0.8, runtime-tokio, tls-rustls).

One pool per tenant database: ADR 0008 keeps tenants isolated at the database boundary, and the native runtime (#19) holds one adapter per tenant. What one tenant’s pool may take (TENANT-ROUTING.md §4).

The per-tenant cap is what stops one busy tenant taking every connection on a shared cluster; the idle timeout is what stops a replica’s cost scaling with the tenant count rather than with its traffic, since a pool that no request has touched should not hold connections open.

acquire_timeout is the fail-closed half: a checkout that cannot be served refuses with a deadline rather than queueing unboundedly, which is the same instinct as the outbound budget in #136.

Fields

max_connections: u32

Connections one tenant’s pool may hold. Default 8.

idle_timeout: Option<Duration>

A pool with no checkout for this long closes its connections. Default 5 minutes.

acquire_timeout: Duration

How long a checkout waits before refusing. Default 5 seconds.

Trait Implementations

impl Clone for PoolLimits

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PoolLimits

impl Debug for PoolLimits

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

Formats the value using the given formatter.

impl Default for PoolLimits

fn default() -> Self

Returns the “default value” for a type.

impl Eq for PoolLimits

impl PartialEq for PoolLimits

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PoolLimits