class_docstr: A cache that doesn't cache anything.
  
  Because cachetools does not work with maxsize=0.
class_docstr_tok: ["A","cache","that","does","n't","cache","anything",".","Because","cachetools","does","not","work","with","maxsize=0","."]
code: def __setitem__(self, key, value):
      pass
  
imports: import enum
  import io
  from logging import getLogger
  import os
  import platform
  from typing import Union, Tuple, Optional
  import cachetools
  import rwlock
  from .node import Node, FreelistNode
  from .const import ENDIAN, PAGE_REFERENCE_BYTES, OTHERS_BYTES, TreeConf, FRAME_TYPE_BYTES
label_desc: Use image node_id 2 for calling the FakeCache obj's underlying member method code with example usage: obj.__setitem__(key, value) without return types