interface CacheContent {
  expiry: number;
  value: any;
}

/**
 * Cache Service is an observables based in-memory cache implementation
 * Keeps track of in-flight observables and sets a default expiry for cached values
 * @export
 * @class CacheService
 */
export class CacheService {
  private cache: Map<string, CacheContent> = new Map<string, CacheContent>();
  private inFlightObservables: Map<string, Subject<any>> = new Map<string, Subject<any>>();
  readonly DEFAULT_MAX_AGE: number = 300000;