import type { ILogger } from "../../sdk/index.js";
/**
 * Process-wide cache for axios JSON responses.
 *
 * Multiple plugin instances (one per SDK / network) share the same
 * cached HTTP response so that only **one** request is made per TTL window
 * regardless of how many SDK instances exist.
 *
 * Concurrent callers that arrive while a fetch is already in flight
 * are de-duplicated — they all await the same promise.
 */
export declare class AxiosCache<T> {
    #private;
    private constructor();
    /**
     * Returns a shared cache instance for the given URL.
     * The same instance is reused across all callers with identical URL.
     */
    static get<T>(url: string, ttlMs: number, logger?: ILogger, getLogMeta?: (data: T) => string): AxiosCache<T>;
    /**
     * Returns cached data if fresh, otherwise fetches from the network.
     * Concurrent calls are de-duplicated.
     */
    fetch(): Promise<T>;
    /** Evicts all cached entries. Mainly useful for tests. */
    static clearAll(): void;
}