Enum WriterHolder 

pub enum WriterHolder {
    Publish,
    HistoryGc,
    Checkpoint,
    Pause,
}

What holds a backend’s single writer: one redb write transaction, from begin_write to its commit. Every other writer waits meanwhile, so the longest holds are what stall other tenants’ commits.

Variants

Publish

Publishing commit groups into the materialization.

HistoryGc

One batch of history garbage collection.

Checkpoint

A durable checkpoint (fsync).

Pause

Writes paused for a consistent copy (backup).

Implementations

impl WriterHolder

pub const ALL: [Self; 4]

Every holder.

pub const fn label(self) -> &'static str

Stable metric label.

Trait Implementations

impl Clone for WriterHolder

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WriterHolder

impl Debug for WriterHolder

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

Formats the value using the given formatter.

impl Eq for WriterHolder

impl PartialEq for WriterHolder

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for WriterHolder