use LRU cache

Author: kevinjqliu

pyiceberg/table/snapshots.py

@@ -21,7 +21,7 @@
 from enum import Enum
 from typing import TYPE_CHECKING, Any, DefaultDict, Dict, Iterable, List, Mapping, Optional
 
-from cachetools import cached
+from cachetools import LRUCache, cached
 from cachetools.keys import hashkey
 from pydantic import Field, PrivateAttr, model_serializer
 
@@ -232,7 +232,7 @@ def __eq__(self, other: Any) -> bool:
         )
 
 
-@cached(cache={}, key=lambda io, manifest_list: hashkey(manifest_list))
+@cached(cache=LRUCache(maxsize=128), key=lambda io, manifest_list: hashkey(manifest_list))
 def _manifests(io: FileIO, manifest_list: str) -> List[ManifestFile]:
     """Return the manifests from the manifest list."""
     file = io.new_input(manifest_list)