`ParserCache`

This extension adds LRU caching to the parsing step of query execution to improve performance by caching the parsed result in memory.

Usage example:

import strawberry
from strawberry.extensions import ParserCache
 
 
@strawberry.type
class Query:
    @strawberry.field
    def hello(self) -> str:
        return "Hello, world!"
 
 
schema = strawberry.Schema(
    Query,
    extensions=[
        ParserCache(),
    ],
)

API reference:

class ParserCache(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:

Using maxsize

import strawberry
from strawberry.extensions import ParserCache
 
 
@strawberry.type
class Query:
    @strawberry.field
    def hello(self) -> str:
        return "Hello, world!"
 
 
schema = strawberry.Schema(
    Query,
    extensions=[
        ParserCache(maxsize=100),
    ],
)