Change gcTime: infinity -> 30min

optuna_dashboard/ts/hooks/useParamImportance.ts

@@ -17,7 +17,7 @@ export const useParamImportance = ({
     queryKey: ["paramImportance", studyId, numCompletedTrials],
     queryFn: () => getParamImportances(studyId),
     staleTime: Infinity,
-    gcTime: Infinity,
+    gcTime: 30 * 60 * 1000, // 30 minutes
   })
 
   useEffect(() => {

optuna_dashboard/ts/hooks/usePlot.ts

@@ -25,7 +25,7 @@ export const usePlot = ({
       return getPlotAPI(studyId, plotType)
     },
     staleTime: Infinity,
-    gcTime: Infinity,
+    gcTime: 30 * 60 * 1000, // 30 minutes
   })
 
   return {