fix: use async lru_cache

pyproject.toml

@@ -12,6 +12,7 @@ dependencies = [
   "accept-types < 1",
   "aiohttp < 4",
   "aiokafka == 0.10.0",
+  "async_lru",
   "cachetools == 5.3.3",
   "confluent-kafka == 2.4.0",
   "isodate < 1",

src/karapace/serialization.py

@@ -5,10 +5,10 @@
 from __future__ import annotations
 
 from aiohttp import BasicAuth
+from async_lru import alru_cache
 from avro.io import BinaryDecoder, BinaryEncoder, DatumReader, DatumWriter
 from cachetools import TTLCache
 from collections.abc import MutableMapping
-from functools import lru_cache
 from google.protobuf.message import DecodeError
 from jsonschema import ValidationError
 from karapace.client import Client
@@ -180,7 +180,7 @@ async def _get_schema_recursive(
         except InvalidSchema as e:
             raise SchemaRetrievalError(f"Failed to parse schema string from response: {json_result}") from e
 
-    @lru_cache(maxsize=100)
+    @alru_cache(maxsize=100)
     async def get_schema(
         self,
         subject: Subject,