Enum SyncRecycleStrategy 

pub enum SyncRecycleStrategy {
    SelectOne,
    Ping,
    None,
    Custom(SyncRecycleCheck),
}

Strategy used by the synchronous ConnectionPool to validate a connection when it is checked out.

Mirrors RecycleStrategy for the blocking Connection type. Defaults to SelectOne.

Variants

SelectOne

Run a SELECT 1 round-trip on every checkout (the default).

Ping

Call Connection::ping on every checkout.

None

Skip the active probe; only the passive Connection::is_alive check runs.

Custom(SyncRecycleCheck)

Run a user-supplied synchronous check on every checkout.

Trait Implementations

impl Clone for SyncRecycleStrategy

fn clone(&self) -> SyncRecycleStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SyncRecycleStrategy

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

Formats the value using the given formatter.

impl Default for SyncRecycleStrategy

fn default() -> SyncRecycleStrategy

Returns the “default value” for a type.