class_docstr: StorageHandler that uses Redis as backend. 
code: def _get(self, serialized_key):
      return self.connection.get(serialized_key)
  
imports: import os
  import dill
  import pickle
  from typing import Dict
  from hashlib import md5
  import redis
  import sqlite3
label_desc: Use image node_id 2 for calling the RedisStorageHandler obj's underlying member method code with example usage: obj._get(serialized_key) and returns: self