import type { AgentMiddleware, AgentResponse } from "../../types.js";
export interface CacheConfig {
    strategy: "memory" | "lru" | "ttl";
    maxSize?: number;
    ttl?: number;
    keyGenerator?: (input: string, context?: Record<string, unknown>) => string;
}
export interface CacheEntry {
    response: AgentResponse;
    cachedAt: number;
    expiresAt?: number;
    accessCount: number;
    lastAccessedAt: number;
}
export declare function createCache(config: CacheConfig): {
    get(input: string, context?: Record<string, unknown>): AgentResponse | null;
    set(input: string, response: AgentResponse, context?: Record<string, unknown>): void;
    has(input: string, context?: Record<string, unknown>): boolean;
    delete(input: string, context?: Record<string, unknown>): void;
    clear(): void;
    size(): number;
    destroy(): void;
};
export declare function cacheMiddleware(config: CacheConfig): AgentMiddleware & {
    destroy(): void;
};
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