Enum StoreMode 

pub enum StoreMode {
    Always,
    Absent,
    Cas(String),
}

Defines the behavior for store operations.

This enum specifies how a store operation should behave when a key already exists in the storage system.

Variants

Always

Indicates that the store operation should always succeed, overwriting any existing value.

This mode is useful when you want to unconditionally update a value regardless of its current state.

Absent

Indicates that the store operation should succeed only if no value was previously stored.

This mode is useful for implementing “set if not exists” semantics, ensuring that values are only written once.

Cas(String)

Indicates that the store operation should succeed only if the stored value matches the provided CAS.

This mode is useful for implementing optimistic concurrency control, ensuring that updates only succeed if the value hasn’t been modified by another operation.

Trait Implementations

impl Clone for StoreMode

fn clone(&self) -> StoreMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StoreMode

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

Formats the value using the given formatter.

impl PartialEq for StoreMode

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for StoreMode

impl StructuralPartialEq for StoreMode