code: def set(self, name, value):
      key = self.redis_key(name)
      value = self.serialize(value)
  
      self.client.set(key, value)
      # using key with category name to store all keys with modify time
      self.client.hset(self.category, key, int(time.time() * 1000))
  
      self.clear_old_cache(key)
  
imports: import os
  import time
  from abc import ABC
  from pathlib import Path
  import hashlib
  import typing
  import pandas
  import walrus
  from mindsdb.utilities.config import Config
  from mindsdb.utilities.json_encoder import CustomJSONEncoder
  from mindsdb.interfaces.storage.fs import FileLock
  from mindsdb.utilities.context import context
label_desc: Use image node_id 4 for calling the RedisCache obj's underlying member method code with example usage: obj.set(name, value) without return types