Method get_health_score

graphlite/src/cache/cache_manager.rs:597–633

Get cache health score (0.0 to 1.0)

(&self)

    /// Get cache health score (0.0 to 1.0)
    pub fn get_health_score(&self) -> CacheHealthScore {
        let stats = self.get_stats();

        // Hit rate score (0.0 to 1.0)
        let hit_rate_score = stats.global.overall_hit_rate();

        // Memory efficiency score
        let memory_usage_ratio =
            stats.global.total_memory_bytes as f64 / self.config.max_memory_bytes as f64;
        let memory_score = if memory_usage_ratio > 0.9 {
            0.5 // High memory usage is concerning
        } else if memory_usage_ratio > 0.7 {
            0.8 // Moderate usage is good
        } else {
            1.0 // Low usage is excellent
        };

        // Eviction rate score (lower is better)
        let total_requests = stats.global.total_hits + stats.global.total_misses;
        let eviction_rate = if total_requests == 0 {
            0.0
        } else {
            stats.global.total_evictions as f64 / total_requests as f64
        };
        let eviction_score = (1.0 - eviction_rate.min(1.0)).max(0.0);

        // Overall score (weighted average)
        let overall_score = (hit_rate_score * 0.5) + (memory_score * 0.3) + (eviction_score * 0.2);

        CacheHealthScore {
            overall: overall_score,
            hit_rate: hit_rate_score,
            memory_efficiency: memory_score,
            eviction_health: eviction_score,
            recommendations: self.generate_recommendations(&stats),
        }
    }

    fn update_global_stats(&self) {
        let result_stats = self.result_cache.stats();