> ## Documentation Index > Fetch the complete documentation index at: https://docs.ag2.ai/llms.txt > Use this file to discover all available pages before exploring further. # autogen.cache.AbstractCache
`AbstractCache`



```python theme={null}
AbstractCache(*args, **kwargs)
```

This protocol defines the basic interface for cache operations.
Implementing classes should provide concrete implementations for
these methods to handle caching mechanisms.

Parameters:

| Name       | Description |
| ---------- | ----------- |
| `*args`    |             |
| `**kwargs` |             |

### Instance Methods



#### close

```python theme={null}
close(self) -> None
```

Close the cache. Perform any necessary cleanup, such as closing network connections or
releasing resources.






#### get

```python theme={null}
get(
    self,
    key: str,
    default: Any | None = None
) -> Any | None
```

Retrieve an item from the cache.


Parameters:

| Name      | Description                                                                                                                                     |
| --------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| `key`     | The key identifying the item in the cache.

**Type:** str                                                                             |
| `default` | The default value to return if the key is not found.

Defaults to None.

**Type:** Any \| None

**Default:** None |

Returns:

| Type        | Description                                                         |
| ----------- | ------------------------------------------------------------------- |
| Any \| None | The value associated with the key if found, else the default value. |






#### set

```python theme={null}
set(
    self,
    key: str,
    value: Any
) -> None
```

Set an item in the cache.


Parameters:

| Name    | Description                                                            |
| ------- | ---------------------------------------------------------------------- |
| `key`   | The key under which the item is to be stored.

**Type:** str |
| `value` | The value to be stored in the cache.

**Type:** Any          |