/** Simple in-memory TTL cache */
export declare class TtlCache {
    private store;
    get<T>(key: string): T | undefined;
    set<T>(key: string, data: T, ttlMs: number): void;
    clear(): void;
}
/** Cache TTL constants in milliseconds */
export declare const TTL: {
    readonly REALTIME: number;
    readonly PRICES: number;
    readonly CAPACITY: number;
    readonly FLOWS: number;
    readonly STORAGE: number;
    readonly WEATHER: number;
    readonly EIA: number;
    readonly FORECAST: number;
    readonly BALANCING: number;
    readonly STATIC_DATA: number;
    readonly AUCTION: number;
    readonly ANCILLARY: number;
    readonly OUTAGES: number;
    readonly FREQUENCY: number;
    readonly INTRADAY: number;
};