# MemoryCache **`class MemoryCache(copy=True)`** Bases: [`Cache`](squirro.lib.nlp.utils.cache.Cache.md#squirro.lib.nlp.utils.cache.Cache) A simplistic cache which stores objects in memory. The copy parameter specifies whether objects within the cache should be copied to prevent modifying cached values from outside. Methods SummaryMethods Documentation **`delete(key)`** Return type [`None`](https://docs.python.org/3.11/library/constants.html#None) **`exists(key)`** Return type [`bool`](https://docs.python.org/3.11/library/functions.html#bool) **`get(key)`** Return type [`Optional`](https://docs.python.org/3.11/library/typing.html#typing.Optional)[[`Any`](https://docs.python.org/3.11/library/typing.html#typing.Any)] **`get_all()`** Return type [`list`](https://docs.python.org/3.11/library/stdtypes.html#list)[[`tuple`](https://docs.python.org/3.11/library/stdtypes.html#tuple)[[`str`](https://docs.python.org/3.11/library/stdtypes.html#str), [`Any`](https://docs.python.org/3.11/library/typing.html#typing.Any)]] **`set(key, value)`** Return type [`None`](https://docs.python.org/3.11/library/constants.html#None)