Enum Durability 

pub enum Durability {
    Ordered,
    Durable,
}

What a caller needs from one Storage::sync call — the weakest guarantee that is still correct at that point, so that a backend able to serve it cheaply is free to.

Variants

Ordered

Everything written to the path before this call must land before anything written after it. It says nothing about when: a crash may still lose the lot, only never a suffix without its prefix. This is all Storage::write_atomic needs from its staging flush — the rename must not be seen before the bytes it publishes — and on Apple platforms it is the difference between a barrier and draining the drive’s write cache.

Durable

Once the call returns, the bytes survive power loss.

Trait Implementations

impl Clone for Durability

fn clone(&self) -> Durability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Durability

impl Debug for Durability

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

Formats the value using the given formatter.

impl Eq for Durability

impl Ord for Durability

fn cmp(&self, other: &Durability) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Durability

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Durability

fn partial_cmp(&self, other: &Durability) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Durability