Enum DurabilityLevel 

pub enum DurabilityLevel {
    Durable,
    GroupCommit {
        max_batch: usize,
        flush_interval: Duration,
    },
    Periodic {
        sync_interval: Duration,
        accept_data_loss_risk: bool,
    },
    NoSync {
        accept_data_loss_risk: bool,
    },
}

Durability level for write operations

Variants

Durable

Every commit is immediately fsync’d (safest, slowest) Guarantees: commit returns ⇒ data is on stable storage

GroupCommit

Commits are batched and fsync’d together (production default) Guarantees: commit returns ⇒ data will be on stable storage within flush_interval Trade-off: Up to flush_interval ms of data loss on crash

Fields

max_batch: usize

Maximum number of commits to batch

flush_interval: Duration

Maximum time to wait before flush

Periodic

Fsync on timer (UNSAFE - data loss possible) WARNING: Up to sync_interval of committed transactions can be lost

Fields

sync_interval: Duration

Sync interval

accept_data_loss_risk: bool

Acknowledgement that this is unsafe

NoSync

No fsync (UNSAFE - testing only) WARNING: ANY committed data can be lost on crash

Fields

accept_data_loss_risk: bool

Acknowledgement that this is unsafe

Implementations

impl DurabilityLevel

pub fn is_production_safe(&self) -> bool

Check if this level is safe for production

pub fn requires_risk_acceptance(&self) -> bool

Check if explicit risk acceptance is required

pub fn default_production() -> Self

Get the default production-safe configuration

pub fn safest() -> Self

Get the safest configuration

Trait Implementations

impl Clone for DurabilityLevel

fn clone(&self) -> DurabilityLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DurabilityLevel

impl Debug for DurabilityLevel

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

Formats the value using the given formatter.

impl Default for DurabilityLevel

fn default() -> Self

Returns the “default value” for a type.

impl Display for DurabilityLevel

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

Formats the value using the given formatter.

impl Eq for DurabilityLevel

impl PartialEq for DurabilityLevel

fn eq(&self, other: &DurabilityLevel) -> 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 StructuralPartialEq for DurabilityLevel