Struct GraphMetrics 

pub struct GraphMetrics {
    pub edge_insert_latency: LatencyHistogram,
    pub traversal_latency: LatencyHistogram,
    pub query_latency: LatencyHistogram,
    /* private fields */
}

Graph-specific performance metrics.

Thread-safe counters and histograms for monitoring graph operations.

Example

use velesdb_core::collection::graph::GraphMetrics;

let metrics = GraphMetrics::new();

// Record an edge insertion (counters only — see `record_edge_inserts_batch`
// for the batch path, which is what feeds `edge_insert_latency`)
metrics.record_edge_insert();

// Get statistics
println!("Total edges inserted: {}", metrics.edge_inserts_total());

Fields

edge_insert_latency: LatencyHistogram

Edge insertion latency histogram. Populated by the batch insert path only — the single-edge path records counters without a clock read (see record_edge_insert).

traversal_latency: LatencyHistogram

Traversal latency histogram

query_latency: LatencyHistogram

Query latency histogram

Implementations

impl GraphMetrics

pub fn new() -> Self

Creates a new metrics instance with all counters at zero.

pub fn record_edge_insert(&self)

Records an edge insertion.

Counters only — no clock read. The single-edge path runs per write, so a per-call Instant::now() plus histogram bucketing was a real cost paid on every insert; nothing reads it. edge_insert_latency is still fed by record_edge_inserts_batch, which pays that cost once per batch instead of once per edge.

pub fn record_edge_inserts_batch(&self, count: u64, latency: Duration)

Records a batch edge insertion.

Bumps the insert/edge counters by count and observes the batch latency once, avoiding a per-edge Instant::now() on the bulk path.

pub fn record_edge_delete(&self)

Records an edge deletion.

Counters only — no clock read. See record_edge_insert for why: the per-delete Instant::now() this used to take had no reader.

Uses saturating subtraction to prevent underflow.

pub fn edges_total(&self) -> u64

Returns total edge count.

pub fn edge_inserts_total(&self) -> u64

Returns total edge insertions.

pub fn edge_deletes_total(&self) -> u64

Returns total edge deletions.

pub fn record_traversal(&self, latency: Duration, nodes_visited: u64)

Records a traversal with latency and nodes visited.

pub fn traversals_total(&self) -> u64

Returns total traversal count.

pub fn traversal_nodes_visited(&self) -> u64

Returns total nodes visited across all traversals.

pub fn record_query(&self, latency: Duration)

Records a query latency.

pub fn reset(&self)

Resets all metrics to zero.

Trait Implementations

impl Debug for GraphMetrics

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

Formats the value using the given formatter.

impl Default for GraphMetrics

fn default() -> GraphMetrics

Returns the “default value” for a type.