diff --git a/Startup.cs b/Startup.cs
index 429b04a..4bd0cdb 100644
--- a/Startup.cs
+++ b/Startup.cs
@@ -6,6 +6,7 @@ using IdentityModel.AspNetCore.OAuth2Introspection;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Server.Kestrel.Core;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
@@ -103,9 +104,24 @@ namespace xApi
                     x.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
                 });
 
-            // //
-            // // Check Data Service ...
-            // var dataServiceConfig = Configuration.GetXDataServiceConfiguration();
+            //
+            // Custom ...
+
+            //
+            services.Configure<IISServerOptions>(options =>
+            {
+                options.AllowSynchronousIO = true;
+            });
+
+            //
+            services.Configure<KestrelServerOptions>(options =>
+            {
+                options.AllowSynchronousIO = true;
+            });
+
+            //
+            // Check Data Service ...
+            var dataServiceConfig = Configuration.GetXDataServiceConfiguration();
 
             //
             // Check DataBase Registration ...
@@ -165,8 +181,10 @@ namespace xApi
 
             //
             // Use xDataService Middleware ...
-            // TODO: Fix this ...
-            // app.UseXDatabase(apiDatabaseDescriptor);
+            app.UseXDatabase(
+                descriptor: apiDatabaseDescriptor,
+                isDevelopmentEnvironment: env.IsDevelopment()
+            );
 
             //
             // Using Services ...
diff --git a/appsettings.json b/appsettings.json
index b1e3be7..de6af52 100644
--- a/appsettings.json
+++ b/appsettings.json
@@ -54,12 +54,25 @@
     "Databases": {
       "xApiDb": {
         "Provider": "SQLITE",
-        "ConnectionString": "Filename=./Db/XApi.db"
+        "ConnectionString": "Filename=./Db/XApi.db",
+        "SeedItems": {
+          "XTest": [
+            {
+              "Firstname": "Hadi",
+              "Lastname": "Khazaee Asl"
+            },
+            {
+              "Firstname": "Amir Ali",
+              "Lastname": "Khazaee Asl"
+            }
+          ]
+        }
       }
     },
     "EnableTracking": true,
     "EnableSoftDelete": false,
     "EnableDetailedErrors": false,
+    "SeedingMode": "AddIfNotExists",
     "EnableSensitiveDataLogging": true,
     "PagingConfiguration": {
       "DefaultPageSize": 20,