/**
 * Internal cache entry structure
 */
export type CacheEntry = {
    value: any;
    expiresAt?: number;
    createdAt: number;
    lastAccessedAt: number;
};
/**
 * Eviction policy options
 */
export type EvictionPolicy = 'FIFO' | 'LRU';
/**
 * Memory usage information
 */
export interface MemoryUsage {
    estimatedBytes: number;
    averageBytesPerEntry: number;
}
/**
 * Cache statistics interface
 */
export interface CacheStats {
    hits: number;
    misses: number;
    size: number;
    maxSize: number;
    evictions: number;
}
/**
 * Cache configuration options
 */
export interface CacheOptions {
    /** Time to live in milliseconds */
    ttl?: number;
    /** Maximum number of entries allowed in cache */
    maxSize?: number;
    /** Enable statistics tracking */
    enableStats?: boolean;
    /** Eviction policy - FIFO (default) or LRU */
    evictionPolicy?: EvictionPolicy;
}