/**
 * Shared cache metrics utilities
 *
 * This module provides common calculation functions for cache statistics
 * to prevent code duplication across the codebase.
 */
/**
 * Calculate cache hit rate as a percentage
 * @param cacheHits Number of cache hits
 * @param cacheMisses Number of cache misses
 * @returns Hit rate as a percentage (0-100), or 0 if no cache operations
 */
export declare function calculateCacheHitRate(cacheHits: number, cacheMisses: number): number;
/**
 * Calculate cache miss rate as a percentage
 * @param cacheHits Number of cache hits
 * @param cacheMisses Number of cache misses
 * @returns Miss rate as a percentage (0-100), or 0 if no cache operations
 */
export declare function calculateCacheMissRate(cacheHits: number, cacheMisses: number): number;
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