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Validation Cache

docs/extensions/validation-cache.md

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ValidationCache

This extension adds LRU caching to the validation step of query execution to improve performance by caching the validation errors in memory.

Usage example:

python
import strawberry
from strawberry.extensions import ValidationCache


@strawberry.type
class Query:
    @strawberry.field
    def hello(self) -> str:
        return "Hello, world!"


schema = strawberry.Schema(
    Query,
    extensions=[
        ValidationCache(),
    ],
)

API reference:

python
class ValidationCache(maxsize=None): ...

maxsize: Optional[int] = None

Set the maxsize of the cache. If maxsize is set to None then the cache will grow without bound.

More info: https://docs.python.org/3/library/functools.html#functools.lru_cache

More examples:

<details> <summary>Using maxsize</summary>
python
import strawberry
from strawberry.extensions import ValidationCache


@strawberry.type
class Query:
    @strawberry.field
    def hello(self) -> str:
        return "Hello, world!"


schema = strawberry.Schema(
    Query,
    extensions=[
        ValidationCache(maxsize=100),
    ],
)
</details>