Function cachedKeysStore

utils/cache.js:78–130

()

  const clear = () => {
    cacheStore.clear();
  };

  return { get, set, evict, clear, hits, cacheStore };
};
/**
 * A MultiMap implementation where each key maps to set of unique values.
 * It internally uses Map to store keys and values and to save multiple values it uses Set. Map<string,Set<string>>
 */
const cachedKeysStore = () => {
  const keyStore = new Map();

  /**
   * Returns set of values mapped to given key
   * @param {string} modelKey key for the map
   * @returns {Set} set of values
   */
  const getCachedKeys = (modelKey) => {
    if (!keyStore.has(modelKey)) {
      return new Set();
    }
    return keyStore.get(modelKey);
  };

  /**
   * Adds a value(cachedKey) for the given key(modelKey)
   * @param {string} modelKey key for the map
   * @param {string} cachedKey value for the given key
   *
   */
  const addCachedKey = (modelKey, cachedKey) => {
    if (keyStore.has(modelKey)) {
      keyStore.get(modelKey).add(cachedKey);
    } else {
      const set = new Set();
      set.add(cachedKey);
      keyStore.set(modelKey, set);
    }
  };
  /**
   * removes the given key(modelKey) and all of its associated values
   * @param {string} modelKey key for the map
   *
   */
  const removeModelKey = (modelKey) => {
    keyStore.delete(modelKey);
  };

  /**
   * remove a value(cachedKey) for the given key(modelKey)
   * @param {string} modelKey key for the map
   * @param {string} cachedKey value for the given key
   *
   */
  const removeCachedKey = (modelKey, cachedKey) => {
    if (keyStore.has(modelKey)) {
      keyStore.get(modelKey).delete(cachedKey);