const APPLICATIONS_CACHE = new LRU({
  maxAge: CACHED_APPS_MAX_AGE, // expire after 24 hours
  updateAgeOnGet: true,
  dispose: (app, {fullPath}) => {
    logger.info(`The application '${app}' cached at '${fullPath}' has ` +
      `expired after ${CACHED_APPS_MAX_AGE}ms`);
    setTimeout(async () => {
      if (fullPath) {
        await fs.rimraf(fullPath);
      }
    });
  },
  noDisposeOnSet: true,
});