parser-cache.md

title	summary	tags
Parser Cache	Add in memory caching to the parsing step of query execution.	performance,caching,parsing

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),
    ],
)