import { CacheProvider } from '../../interfaces/cache-provider';
import { TieredCacheOptions } from '../../interfaces/cache-options';
/**
 * Handles read operations for tiered cache
 */
export declare class TieredCacheReadStrategy {
    private providers;
    private options;
    private logger;
    /**
     * Creates a new TieredCacheReadStrategy
     * @param providers Array of cache providers
     * @param options Cache options
     * @param logger Logger instance
     */
    constructor(providers: Array<{
        provider: CacheProvider;
        options: {
            writeOnHitFromLowerTier: boolean;
            ttl?: number;
        };
    }>, options: TieredCacheOptions, logger: any);
    /**
     * Get a value from the cache
     * @param key Cache key
     * @returns Promise resolving to the cached value or undefined if not found
     */
    get<T>(key: string): Promise<T | undefined>;
    /**
     * Populate higher tiers with a value found in a lower tier
     * @param key Cache key
     * @param value Value to cache
     * @param foundInTier Tier index where the value was found
     */
    private populateHigherTiers;
    /**
     * Check if a key exists in the cache
     * @param key Cache key
     * @returns Promise resolving to true if the key exists
     */
    has(key: string): Promise<boolean>;
    /**
     * Get multiple values from the cache
     * @param keys Array of cache keys
     * @returns Promise resolving to a map of key-value pairs for found items
     */
    getMany<T>(keys: string[]): Promise<Map<string, T>>;
    /**
     * Populate higher tiers with multiple values found in a lower tier
     * @param entries Map of key-value pairs to cache
     * @param foundInTier Tier index where the values were found
     */
    private populateHigherTiersMany;
    /**
     * Get the Time-To-Live (TTL) for a cache key
     * @param key Cache key
     * @returns Promise resolving to TTL in milliseconds, or undefined if not found
     */
    getTtl(key: string): Promise<number | undefined>;
}
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