diff --git a/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/CachedApplicationConfigurationClient.cs b/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/CachedApplicationConfigurationClient.cs
index f7df64b257..557b7c8835 100644
--- a/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/CachedApplicationConfigurationClient.cs
+++ b/framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/CachedApplicationConfigurationClient.cs
@@ -45,7 +45,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Client
                 async () => await Proxy.Service.GetAsync(),
                 () => new DistributedCacheEntryOptions
                 {
-                    AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(5)
+                    AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(30) //TODO: Should be configurable. Default value should be higher (5 mins would be good).
                 }
             );
 
diff --git a/framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/AbpEmailingModule.cs b/framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/AbpEmailingModule.cs
index 4a23ecae9a..7648ddc910 100644
--- a/framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/AbpEmailingModule.cs
+++ b/framework/src/Volo.Abp.Emailing/Volo/Abp/Emailing/AbpEmailingModule.cs
@@ -1,5 +1,4 @@
-using Microsoft.Extensions.DependencyInjection;
-using Volo.Abp.BackgroundJobs;
+using Volo.Abp.BackgroundJobs;
 using Volo.Abp.Emailing.Templates;
 using Volo.Abp.Emailing.Templates.Virtual;
 using Volo.Abp.Localization;
diff --git a/framework/src/Volo.Abp.MultiTenancy.Abstractions/Volo/Abp/MultiTenancy/AbpMultiTenancyAbstractionsModule.cs b/framework/src/Volo.Abp.MultiTenancy.Abstractions/Volo/Abp/MultiTenancy/AbpMultiTenancyAbstractionsModule.cs
index 05fc338c67..c695a84664 100644
--- a/framework/src/Volo.Abp.MultiTenancy.Abstractions/Volo/Abp/MultiTenancy/AbpMultiTenancyAbstractionsModule.cs
+++ b/framework/src/Volo.Abp.MultiTenancy.Abstractions/Volo/Abp/MultiTenancy/AbpMultiTenancyAbstractionsModule.cs
@@ -1,13 +1,14 @@
-using Microsoft.Extensions.DependencyInjection;
-using Volo.Abp.Data;
+using Volo.Abp.Data;
 using Volo.Abp.Modularity;
 using Volo.Abp.Settings;
 
 namespace Volo.Abp.MultiTenancy
 {
-    [DependsOn(typeof(AbpDataModule))]
-    [DependsOn(typeof(AbpSettingsModule))]
-    public class AbpMultiTenancyAbstractionsModule : AbpModule //TODO: Rename to AbpMultiTenancyModule
+    [DependsOn(
+        typeof(AbpDataModule),
+        typeof(AbpSettingsModule)
+        )]
+    public class AbpMultiTenancyAbstractionsModule : AbpModule //TODO: Rename to AbpMultiTenancyModule?
     {
         public override void ConfigureServices(ServiceConfigurationContext context)
         {