import { CacheService } from './cache.service';
/**
 * Cache warmup configuration
 */
export interface CacheWarmupConfig {
    /** Warmup task name */
    name: string;
    /** Function to generate cache data */
    dataProvider: () => Promise<any> | any;
    /** Cache key or key generator */
    key: string | ((data: any) => string);
    /** Cache TTL */
    ttl?: number;
    /** Cache layers to use */
    layers?: string[];
    /** Number of items to process in parallel */
    batchSize?: number;
    /** Whether this warmup is critical (fail if it fails) */
    critical?: boolean;
}
/**
 * Cache warmup result
 */
export interface CacheWarmupResult {
    name: string;
    success: boolean;
    itemCount: number;
    duration: number;
    errors: string[];
}
/**
 * Cache warmup service
 *
 * Provides functionality to warm up cache with data before serving requests
 */
export declare class CacheWarmupService {
    private readonly cacheService;
    private readonly logger;
    private warmupConfigs;
    constructor(cacheService: CacheService);
    /**
     * Register warmup configurations for a group
     */
    registerWarmup(groupName: string, configs: CacheWarmupConfig[]): void;
    /**
     * Execute warmup for a specific group
     */
    warmupGroup(groupName: string): Promise<CacheWarmupResult[]>;
    /**
     * Execute warmup for all registered groups
     */
    warmupAll(): Promise<Map<string, CacheWarmupResult[]>>;
    /**
     * Get warmup statistics
     */
    getWarmupStats(): {
        totalGroups: number;
        totalTasks: number;
        taskDetails: any[];
    };
    /**
     * Remove warmup configuration
     */
    removeWarmupGroup(groupName: string): boolean;
    /**
     * Clear all warmup configurations
     */
    clearWarmupConfigs(): void;
    /**
     * Execute a single warmup task
     */
    private executeWarmupTask;
}