缓存系统¶

CachePolicy¶

Configuration for node-level caching.

字段说明：

字段	类型	默认值	说明
`key_func`	`Callable[[str, Any], str]`	`None`	自定义缓存键生成函数
`ttl`	`float`	`None`	缓存有效期（秒）

Bases: ABC

Abstract base class for cache backends.

get(key: str) -> Any | None

Retrieve a cached value by key. Returns None if not found or expired.

set(key: str, value: Any, ttl: float | None = None) -> None

Store a value with optional TTL override.

clear() -> None

Remove all cached entries.

In-memory cache with TTL support.

__init__() -> None

get(key: str) -> Any | None

set(key: str, value: Any, ttl: float | None = None) -> None

clear() -> None