Struct MetricsCache 

pub struct MetricsCache { /* private fields */ }

In-memory cache for graph metrics, keyed by a SHA-256 hash of the graph structure.

The cache avoids recomputing expensive metrics (PageRank, betweenness, HITS, etc.) when the underlying issue graph has not changed. This is especially valuable for TUI sessions where multiple views read the same metrics repeatedly.

Implementations

impl MetricsCache

pub fn new() -> Self

Create a new cache with default TTL (5 minutes).

pub fn with_ttl(ttl: Duration) -> Self

Create a cache with a custom TTL.

pub fn get_or_compute( &self, issues: &[Issue], config: &AnalysisConfig, ) -> GraphMetrics

Compute (or retrieve cached) metrics for the given issues and config.

The cache key is a SHA-256 hash of the graph structure (sorted node IDs, edges, and issue statuses) plus the analysis config.

pub fn clear(&self)

Invalidate all cached entries.

pub fn stats(&self) -> CacheStats

Return cache statistics.

Trait Implementations

impl Default for MetricsCache

fn default() -> Self

Returns the “default value” for a type.