import type { Redis } from 'ioredis';
import { CacheAdapter } from '../interfaces/cache-adapter.interface';
import { FeatureFlagWithOverrides } from '../interfaces/feature-flag.interface';
export interface RedisCacheAdapterOptions {
    client: Redis;
    subscriber?: Redis;
    keyPrefix?: string;
    channel?: string;
}
export declare class RedisCacheAdapter implements CacheAdapter {
    private readonly client;
    private readonly subscriber;
    private readonly keyPrefix;
    private readonly channel;
    private readonly ownsSubscriber;
    constructor(options: RedisCacheAdapterOptions);
    private setupSubscription;
    get(key: string): Promise<FeatureFlagWithOverrides | null>;
    set(key: string, data: FeatureFlagWithOverrides, ttlMs: number): Promise<void>;
    getAll(): Promise<FeatureFlagWithOverrides[] | null>;
    setAll(data: FeatureFlagWithOverrides[], ttlMs: number): Promise<void>;
    invalidate(key?: string): Promise<void>;
    onModuleDestroy(): Promise<void>;
    private prefixedKey;
    private flushLocal;
}