From 7cc88c13f360351334fcf140940fdee2fef7856b Mon Sep 17 00:00:00 2001
From: OlgunR <OlgunR@DD-PC-ENT05N>
Date: Mon, 20 Apr 2026 11:48:50 +0200
Subject: [PATCH] Cache layout user to reduce localStorage access

Add a private _cachedLayoutUser field to BandLayoutService and update EnsureLayoutUserAsync to cache the layout user value after first retrieval or generation. This avoids repeated localStorage calls and improves performance.
---
 DbFirst.BlazorWebApp/Services/BandLayoutService.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/DbFirst.BlazorWebApp/Services/BandLayoutService.cs b/DbFirst.BlazorWebApp/Services/BandLayoutService.cs
index 4e1ae96..0082f80 100644
--- a/DbFirst.BlazorWebApp/Services/BandLayoutService.cs
+++ b/DbFirst.BlazorWebApp/Services/BandLayoutService.cs
@@ -9,16 +9,22 @@ namespace DbFirst.BlazorWebApp.Services
     {
         private const string LayoutUserStorageKey = "layoutUser";
         private readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web);
+        private string? _cachedLayoutUser;
 
         public async Task<string> EnsureLayoutUserAsync()
         {
+            if (!string.IsNullOrWhiteSpace(_cachedLayoutUser))
+                return _cachedLayoutUser;
+
             var layoutUser = await jsRuntime.InvokeAsync<string?>("localStorage.getItem", LayoutUserStorageKey);
             if (string.IsNullOrWhiteSpace(layoutUser))
             {
                 layoutUser = Guid.NewGuid().ToString("N");
                 await jsRuntime.InvokeVoidAsync("localStorage.setItem", LayoutUserStorageKey, layoutUser);
             }
-            return layoutUser;
+
+            _cachedLayoutUser = layoutUser;
+            return _cachedLayoutUser;
         }
 
         public async Task<BandLayout> LoadBandLayoutAsync(