code: /*
   * SPDX-License-Identifier: Apache-2.0
   * Copyright 2018-2020 The Feast Authors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package feast.serving.connectors.redis.retriever;
  
  import io.lettuce.core.*;
  import java.util.List;
  import java.util.Map;
  
  public interface RedisClientAdapter {
    RedisFuture<List<KeyValue<byte[], byte[]>>> hmget(byte[] key, byte[]... fields);
  
    RedisFuture<Map<byte[], byte[]>> hgetall(byte[] key);
  
    void flushCommands();
  }
  