import { ICache, CacheStats, CacheConfig } from '../../domain/services/caching/interfaces';
/**
 * LRU (Least Recently Used) Cache Implementation
 * Evicts least recently accessed items when cache is full
 */
export declare class LruCache<T = any> implements ICache<T> {
    private cache;
    private accessOrder;
    private config;
    private stats;
    constructor(config?: CacheConfig);
    /**
     * Get a value from cache
     */
    get(key: string): Promise<T | null>;
    /**
     * Set a value in cache
     */
    set(key: string, value: T, ttl?: number): Promise<void>;
    /**
     * Delete a value from cache
     */
    delete(key: string): Promise<boolean>;
    /**
     * Check if key exists in cache
     */
    has(key: string): Promise<boolean>;
    /**
     * Clear all cache entries
     */
    clear(): Promise<void>;
    /**
     * Get cache size (number of entries)
     */
    size(): Promise<number>;
    /**
     * Get all cache keys
     */
    keys(): Promise<string[]>;
    /**
     * Get cache statistics
     */
    getStats(): Promise<CacheStats>;
    /**
     * Get cache configuration
     */
    getConfig(): CacheConfig;
    /**
     * Set cache configuration
     */
    setConfig(config: Partial<CacheConfig>): void;
    /**
     * Cleanup expired entries
     */
    cleanup(): Promise<number>;
    /**
     * Close cache and cleanup resources
     */
    close(): Promise<void>;
    private isExpired;
    private evictIfNecessary;
    private evictBySize;
    private evictByCount;
    private estimateSize;
    private startCleanupTimer;
    private stopCleanupTimer;
    private resetStats;
}
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