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MokaSegmentCache

vortex_layout::segments

Struct MokaSegmentCache 

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pub struct MokaSegmentCache(/* private fields */);
Expand description

An in-memory Moka cache of segments, capped by total buffer bytes, that any number of files can share.

A SegmentId is unique only within one file, so files use the cache through a FileSegmentCache from Self::for_file, which adds a SegmentSourceId. Opening the same file again with the same ID reuses the segments an earlier open read.

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impl MokaSegmentCache

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pub fn new(max_capacity_bytes: u64, eviction: SegmentEviction) -> Self

Construct a Moka-backed cache capped by total buffer bytes.

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pub fn for_file( &self, source_id: impl Into<SegmentSourceId>, ) -> FileSegmentCache

The view of this cache for the file identified by source_id.

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pub fn weighted_size(&self) -> u64

The total bytes of the cached segments.

Recent inserts and evictions may not be counted yet; call Self::run_pending_tasks first for an exact value.

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pub fn entry_count(&self) -> u64

The number of cached segments, with the same caveat as Self::weighted_size.

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pub async fn run_pending_tasks(&self)

Apply pending inserts and evictions, so that the counts are exact.

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pub fn invalidate_all(&self)

Remove every cached segment.

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impl Clone for MokaSegmentCache

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fn clone(&self) -> Self

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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