Update langgraph/checkpoint/redis/shallow.py

Co-authored-by: Copilot <[email protected]>

Author: bsbodden

langgraph/checkpoint/redis/shallow.py

@@ -448,7 +448,13 @@ def _deserialize_channel_values_inline(
 
             if type_name and type_name != "empty" and blob_data is not None:
                 # Create cache key based on channel, type, and data hash
-                cache_key = f"{channel}:{type_name}:{hash(blob_data)}"
+                # Use a stable hash for cache key
+                if isinstance(blob_data, str):
+                    blob_bytes = blob_data.encode("utf-8")
+                else:
+                    blob_bytes = blob_data
+                blob_hash = hashlib.md5(blob_bytes).hexdigest()
+                cache_key = f"{channel}:{type_name}:{blob_hash}"
 
                 # Check cache first
                 if cache_key in self._channel_cache: