/**
 * Blockchain data caching utility
 *
 * Caches expensive blockchain GraphQL calls (dynamic field lookups and
 * multi-object fetches) since market data changes infrequently on-chain.
 */
interface CacheEntry<T> {
    data: T;
    timestamp: number;
    ttl: number;
}
/**
 * Blockchain Cache Manager
 * Caches blockchain queries that don't change frequently
 */
declare class BlockchainCacheManager {
    private static instance;
    private cache;
    private static readonly DEFAULT_MARKETS_TTL;
    private constructor();
    static getInstance(): BlockchainCacheManager;
    /**
     * Get cached data or execute fetcher if cache miss/expired
     */
    getOrFetch<T>(key: string, fetcher: () => Promise<T>, options?: {
        ttl?: number;
        skipCache?: boolean;
    }): Promise<T>;
    /**
     * Clear specific cache entry or all cache
     */
    clearCache(key?: string): void;
    /**
     * Get cache statistics
     */
    getCacheStats(): {
        size: number;
        entries: Array<{
            key: string;
            age: number;
            ttl: number;
        }>;
    };
}
export declare const blockchainCache: BlockchainCacheManager;
export type { CacheEntry };
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