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CommitBatching

Enum CommitBatching 

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pub enum CommitBatching {
    Off,
    On {
        max_commits: NonZeroUsize,
        max_bytes: u64,
    },
}
Expand description

Group-commit batching policy for the single per-graph committer thread. Default Off.

Composes with crate::SharedGraphBuilder::with_wal: the committer-managed WAL is always driven in SyncPolicy::OnFlushOnly regardless of the WalConfig passed (the committer owns fsync), so the chosen CommitBatching policy — not the WalConfig — determines how many commits coalesce into one fsync.

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Off

One append + one fsync per commit. Behaviorally identical to BRIEF 1 (durable-before-visible, same crash semantics, one fsync per commit). The default.

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On

Coalesce up to max_commits contiguous commits (capped by aggregate max_bytes) into one group fsync. A single commit larger than max_bytes is still taken alone (the >= 1 progress rule), so the byte cap only bounds accumulation and never rejects a commit.

Fields

§max_commits: NonZeroUsize

Maximum number of contiguous commits coalesced into one fsync.

§max_bytes: u64

Aggregate (estimated) payload-byte cap for one batch — a DoS bound on how much un-fsynced work the committer accumulates before a barrier.

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impl CommitBatching

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pub const DEFAULT_ON: Self

Conventional ON policy: coalesce up to 64 commits / 8 MiB aggregate.

Trait Implementations§

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impl Clone for CommitBatching

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fn clone(&self) -> CommitBatching

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for CommitBatching

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impl Debug for CommitBatching

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

Formats the value using the given formatter. Read more
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impl Default for CommitBatching

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fn default() -> CommitBatching

Returns the “default value” for a type. Read more
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impl Eq for CommitBatching

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impl PartialEq for CommitBatching

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

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

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impl<T> Any for T
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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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fn borrow(&self) -> &T

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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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fn equivalent(&self, key: &K) -> bool

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impl<T> From<T> for T

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fn from(t: T) -> T

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn into(self) -> U

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fn into_either(self, into_left: bool) -> Either<Self, Self>

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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type Metadata = ()

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The resulting type after obtaining ownership.
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type Error = Infallible

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