import { CacheProvider } from '../interfaces/cache-provider';
/**
 * Options for the tag invalidator
 */
export interface TagInvalidatorOptions {
    /**
     * Key prefix for tag sets
     */
    tagPrefix?: string;
    /**
     * Whether to enable logging
     */
    enableLogging?: boolean;
    /**
     * Log level
     */
    logLevel?: 'debug' | 'info' | 'warn' | 'error';
}
/**
 * Tag-based cache invalidator
 * Allows invalidating cache entries based on tags
 */
export declare class TagInvalidator {
    private provider;
    private options;
    private logger;
    /**
     * Creates a new TagInvalidator
     * @param provider Cache provider to invalidate
     * @param options Tag invalidator options
     */
    constructor(provider: CacheProvider, options?: TagInvalidatorOptions);
    /**
     * Set a value in the cache with associated tags
     * @param key Cache key
     * @param value Value to cache
     * @param tags Tags to associate with the key
     * @param ttl Time-to-live in milliseconds (optional)
     * @returns Promise resolving to true if successful
     */
    set<T>(key: string, value: T, tags: string[], ttl?: number): Promise<boolean>;
    /**
     * Invalidate all keys associated with a tag
     * @param tag Tag to invalidate
     * @returns Promise resolving to the number of invalidated keys
     */
    invalidateByTag(tag: string): Promise<number>;
    /**
     * Invalidate keys associated with multiple tags
     * @param tags Tags to invalidate
     * @param operator 'AND' requires keys to have all tags, 'OR' requires any tag
     * @returns Promise resolving to the number of invalidated keys
     */
    invalidateByTags(tags: string[], operator?: 'AND' | 'OR'): Promise<number>;
    /**
     * Associate a key with a tag
     * @param tag Tag to associate
     * @param key Cache key
     * @returns Promise resolving when completed
     */
    private addKeyToTag;
    /**
     * Get all keys associated with a tag
     * @param tag Tag to get keys for
     * @returns Promise resolving to array of keys
     */
    private getKeysByTag;
    /**
     * Get the cache key for a tag set
     * @param tag Tag name
     * @returns Cache key for the tag set
     */
    private getTagKey;
}
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