/**
 * Supported storage providers.
 */
export type StorageProvider = 'redis' | 'vercel-kv';
/**
 * Common options shared between providers.
 */
export interface CommonStorageOptionsInterface {
    /**
     * Key prefix for all keys.
     * @default 'mcp:'
     */
    keyPrefix?: string;
    /**
     * Default TTL in milliseconds for stored data.
     * @default 3600000 (1 hour)
     */
    defaultTtlMs?: number;
}
/**
 * Redis-specific connection options.
 */
export interface RedisConnectionInterface {
    /**
     * Redis host.
     */
    host: string;
    /**
     * Redis port.
     * @default 6379
     */
    port?: number;
    /**
     * Redis password (optional).
     */
    password?: string;
    /**
     * Redis database number.
     * @default 0
     */
    db?: number;
    /**
     * Enable TLS connection.
     * @default false
     */
    tls?: boolean;
}
/**
 * Full Redis provider configuration.
 */
export interface RedisProviderOptionsInterface extends CommonStorageOptionsInterface, RedisConnectionInterface {
    /**
     * Storage provider type.
     */
    provider: 'redis';
}
/**
 * Vercel KV provider configuration.
 * Uses environment variables by default (KV_REST_API_URL, KV_REST_API_TOKEN).
 */
export interface VercelKvProviderOptionsInterface extends CommonStorageOptionsInterface {
    /**
     * Storage provider type.
     */
    provider: 'vercel-kv';
    /**
     * KV REST API URL.
     * @default process.env.KV_REST_API_URL
     */
    url?: string;
    /**
     * KV REST API Token.
     * @default process.env.KV_REST_API_TOKEN
     */
    token?: string;
}
/**
 * Combined Redis options type (union of all provider types).
 */
export type RedisOptionsInterface = RedisProviderOptionsInterface | VercelKvProviderOptionsInterface | (RedisConnectionInterface & CommonStorageOptionsInterface);
/**
 * Pub/Sub options type (Redis-only, no Vercel KV support).
 */
export type PubsubOptionsInterface = RedisProviderOptionsInterface | (RedisConnectionInterface & CommonStorageOptionsInterface);
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