Struct SegmentMetadata 

pub struct SegmentMetadata {
    pub id: SegmentId,
    pub namespace: NamespaceId,
    pub state: SegmentState,
    pub live_count: usize,
    pub deleted_count: usize,
    pub size_bytes: usize,
    pub created_at: u64,
    pub updated_at: u64,
    pub min_id: Option<VectorId>,
    pub max_id: Option<VectorId>,
    pub level: u32,
}

Metadata for a segment

Fields

id: SegmentId

Segment ID

namespace: NamespaceId

Namespace this segment belongs to

state: SegmentState

Current state

live_count: usize

Number of live vectors

deleted_count: usize

Number of deleted vectors (garbage)

size_bytes: usize

Total size in bytes (estimated)

created_at: u64

Creation timestamp

updated_at: u64

Last modified timestamp

min_id: Option<VectorId>

Minimum vector ID in segment (for range queries)

max_id: Option<VectorId>

Maximum vector ID in segment (for range queries)

level: u32

Level in LSM-like hierarchy (0 = most recent)

Implementations

impl SegmentMetadata

pub fn new(id: SegmentId, namespace: NamespaceId) -> Self

Create new segment metadata

pub fn garbage_ratio(&self) -> f32

Calculate garbage ratio

pub fn is_empty(&self) -> bool

Check if segment is empty

pub fn total_count(&self) -> usize

Total vector count (live + deleted)

pub fn needs_compaction(&self, threshold: f32) -> bool

Check if segment should be compacted based on garbage ratio

pub fn update_id_range(&mut self, id: &VectorId)

Update the ID range

Trait Implementations

impl Clone for SegmentMetadata

fn clone(&self) -> SegmentMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SegmentMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SegmentMetadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SegmentMetadata

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.