performance improvements to reduce http and database interactions

Oqtane.Server/Infrastructure/SyncManager.cs

@@ -1,17 +1,21 @@
+using Microsoft.Extensions.Caching.Memory;
 using Oqtane.Models;
+using Oqtane.Shared;
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Oqtane.Repository;
+using System.Reflection;
 
 namespace Oqtane.Infrastructure
 {
     public class SyncManager : ISyncManager
     {
+        private readonly IMemoryCache _cache;
         private List<SyncEvent> SyncEvents { get; set; }
 
-        public SyncManager()
+        public SyncManager(IMemoryCache cache)
         {
+            _cache = cache;
             SyncEvents = new List<SyncEvent>();
         }
 
@@ -28,6 +32,10 @@ namespace Oqtane.Infrastructure
         public void AddSyncEvent(int tenantId, string entityName, int entityId, bool reload)
         {
             SyncEvents.Add(new SyncEvent { TenantId = tenantId, EntityName = entityName, EntityId = entityId, Reload = reload, ModifiedOn = DateTime.UtcNow });
+            if (entityName == EntityNames.Site)
+{
+                _cache.Remove($"site:{tenantId}:{entityId}");
+            }
             // trim sync events 
             SyncEvents.RemoveAll(item => item.ModifiedOn < DateTime.UtcNow.AddHours(-1));
         }