contrainer issue fixed

src/dash_data.py

@@ -1,4 +1,5 @@
 import json
+from functools import lru_cache
 from pathlib import Path
 
 import pandas as pd
@@ -11,11 +12,11 @@ def list_sessions(sessions_dir: str) -> list[str]:
     )
 
 
+@lru_cache(maxsize=8)
 def load_session(sessions_dir: str, name: str) -> tuple[pd.DataFrame, dict]:
     base = Path(sessions_dir).resolve() / Path(name).name
     if not str(base).startswith(str(Path(sessions_dir).resolve())):
         raise ValueError(f"Invalid session: {name}")
-    base = base
     df = pd.read_parquet(base / "telemetry.parquet")
     df["t"] = df["timestamp"] - df["timestamp"].iloc[0]
     info = json.loads((base / "session_info.json").read_text())