docs: function put(key, value, testCacheEnabled) {
    const cacheEnabled = testCacheEnabled || CACHE_ENABLED;
  
    return postgres.put(key, value)
      .then((res) => {
        // persist to cache only if cache is set up/enabled, return postgres result regardless
        if (cacheEnabled) {
          return redis.put(key, value).then(() => res);
        }
  
        return res;
      });
  }