Update langgraph/checkpoint/redis/shallow.py

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

Author: bsbodden

langgraph/checkpoint/redis/shallow.py

@@ -167,7 +167,7 @@ def put(
                 checkpoint_ts = ulid_obj.timestamp  # milliseconds since epoch
             except Exception:
                 # If not a valid ULID, use current time
-                checkpoint_ts = time.time() * 1000
+                checkpoint_ts = time.time() * MILLISECONDS_PER_SECOND
 
         # Parse metadata from string to dict to avoid double serialization
         metadata_str = self._dump_metadata(metadata)