import type { RedisClientType } from 'redis';
import type { IBootstrapFeatureStep } from '../api/services/productsApi.service';
/** TTL for bootstrap cache (same component version = same bootstrap). 5 minutes. */
export declare const BOOTSTRAP_CACHE_TTL_MS: number;
export declare const BOOTSTRAP_REDIS_PREFIX = "ductape:bootstrap:";
export type BootstrapDomain = 'action' | 'notification' | 'storage' | 'session' | 'database' | 'broker' | 'graph' | 'vector' | 'resilience' | 'intelligence' | 'workflow';
export declare function buildBootstrapCacheKey(domain: BootstrapDomain, workspaceId: string, parts: Array<string | undefined | null>): string;
export declare function hashFeatureSteps(steps: IBootstrapFeatureStep[]): string;
/**
 * Tiered bootstrap response cache: in-memory first, optional Redis (encrypted with workspace key).
 * Keys: domain:workspaceId:product:env:tag…
 */
export declare class BootstrapCache {
    private readonly workspaceId;
    private readonly redisClient?;
    private readonly encryptionKey?;
    private readonly internal;
    private readonly inFlight;
    constructor(workspaceId: string, redisClient?: RedisClientType, encryptionKey?: string | null);
    get<T>(key: string): Promise<T | null>;
    set(key: string, data: unknown): void;
    /**
     * Return a cached bootstrap or coalesce concurrent misses into one loader.
     * This prevents request bursts from issuing identical control-plane calls.
     */
    getOrLoad<T>(key: string, loader: () => Promise<T>): Promise<T>;
    clear(): void;
}