Function invalidateCache

utils/cache.js:206–232

(options = {})

};

/**
 * Generate key to save cache.
 * @param {Object} [request]  HTTP request argument to the middleware function passed by express.
 * @returns {string} cache key.
 */
const generateCacheKey = (request) => {
  return "cache:" + request.method + ":" + request.originalUrl;
};

/**
 * Invalidate the cache for given keys
 * @param {Object} [options]
 * @param {Object} [options.invalidationKeys] Array of invalidation keys used in cache middleware.
 * @returns {function} middleware function to help cache api response.
 */
const invalidateCache = (options = {}) => {
  const keys = options.invalidationKeys;

  if (!Array.isArray(keys)) {
    throw new Error("Invalidation keys must be an array");
  }

  return async (req, res, next) => {
    res.on("finish", () => {
      if (res.statusCode < 200 || res.statusCode >= 300) {
        return;
      }
      try {
        for (const key of keys) {
          const cachedKeysSet = cachedKeys.getCachedKeys(key);