class_docstr: An in-memory implementation of the Storage interface. This implementation
  is not durable
class_docstr_tok: ["An","in-memory","implementation","of","the","Storage","interface",".","This","implementation","is","not","durable"]
code: def __init__(self):
      self._version = 0
      self._tables = defaultdict(dict)
      self._lock = Lock()
  
file_path: ray/python/ray/autoscaler/v2/instance_manager/storage.py
imports: import copy
  from abc import ABCMeta, abstractmethod
  from collections import defaultdict, namedtuple
  from threading import Lock
  from typing import Dict, List, Optional, Tuple
label_desc: Use image node_id 1 to create a new InMemoryStorage object from inherited base classes: Storage with example: obj = InMemoryStorage()