Use index for event store.

backend/src/Squidex.Domain.Apps.Entities/Apps/DefaultAppImageStore.cs

@@ -20,7 +20,7 @@ namespace Squidex.Domain.Apps.Entities.Apps
 
         public DefaultAppImageStore(IAssetStore assetStore)
         {
-            Guard.NotNull(assetStore, nameof(assetStore));
+            Guard.NotNull(assetStore);
 
             this.assetStore = assetStore;
         }

backend/src/Squidex.Domain.Apps.Entities/Backup/DefaultBackupArchiveStore.cs

@@ -20,7 +20,7 @@ namespace Squidex.Domain.Apps.Entities.Backup
 
         public DefaultBackupArchiveStore(IAssetStore assetStore)
         {
-            Guard.NotNull(assetStore, nameof(assetStore));
+            Guard.NotNull(assetStore);
 
             this.assetStore = assetStore;
         }

backend/src/Squidex.Domain.Apps.Entities/Contents/Queries/Steps/ScriptContent.cs

@@ -19,7 +19,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Queries.Steps
 
         public ScriptContent(IScriptEngine scriptEngine)
         {
-            Guard.NotNull(scriptEngine, nameof(scriptEngine));
+            Guard.NotNull(scriptEngine);
 
             this.scriptEngine = scriptEngine;
         }

backend/src/Squidex.Domain.Apps.Entities/EventStoreInitializer.cs

@@ -0,0 +1,34 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using System.Threading;
+using System.Threading.Tasks;
+using Squidex.Domain.Apps.Events;
+using Squidex.Infrastructure;
+using Squidex.Infrastructure.EventSourcing;
+
+namespace Squidex.Domain.Apps.Entities
+{
+    public sealed class EventStoreInitializer : IInitializable
+    {
+        private readonly IEventStore eventStore;
+
+        public int Order => 1000;
+
+        public EventStoreInitializer(IEventStore eventStore)
+        {
+            Guard.NotNull(eventStore);
+
+            this.eventStore = eventStore;
+        }
+
+        public Task InitializeAsync(CancellationToken ct = default)
+        {
+            return eventStore.CreateIndexAsync(SquidexHeaders.AppId);
+        }
+    }
+}

backend/src/Squidex.Domain.Apps.Entities/Rules/Runner/GrainRuleRunnerService.cs

@@ -18,7 +18,7 @@ namespace Squidex.Domain.Apps.Entities.Rules.Runner
 
         public GrainRuleRunnerService(IGrainFactory grainFactory)
         {
-            Guard.NotNull(grainFactory, nameof(grainFactory));
+            Guard.NotNull(grainFactory);
 
             this.grainFactory = grainFactory;
         }

backend/src/Squidex.Infrastructure.MongoDb/EventSourcing/MongoEventStore_Reader.cs

@@ -30,7 +30,9 @@ namespace Squidex.Infrastructure.EventSourcing
 
             return Collection.Indexes.CreateOneAsync(
                 new CreateIndexModel<MongoEventCommit>(
-                    Index.Ascending(CreateIndexPath(property))));
+                    Index
+                        .Ascending(CreateIndexPath(property))
+                        .Ascending(TimestampField)));
         }
 
         public IEventSubscription CreateSubscription(IEventSubscriber subscriber, string? streamFilter = null, string? position = null)

backend/src/Squidex.Infrastructure/IInitializable.cs

@@ -12,6 +12,8 @@ namespace Squidex.Infrastructure
 {
     public interface IInitializable
     {
+        int Order => 0;
+
         Task InitializeAsync(CancellationToken ct = default);
     }
 }

backend/src/Squidex/Config/Domain/BackupsServices.cs

@@ -6,6 +6,7 @@
 // ==========================================================================
 
 using Microsoft.Extensions.DependencyInjection;
+using Squidex.Domain.Apps.Entities;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Assets;
 using Squidex.Domain.Apps.Entities.Backup;
@@ -42,6 +43,9 @@ namespace Squidex.Config.Domain
 
             services.AddTransientAs<BackupSchemas>()
                 .As<IBackupHandler>();
+
+            services.AddSingletonAs<EventStoreInitializer>()
+                .AsSelf();
         }
     }
 }

backend/src/Squidex/Config/Startup/InitializerHost.cs

@@ -26,7 +26,7 @@ namespace Squidex.Config.Startup
 
         protected override async Task StartAsync(ISemanticLog log, CancellationToken ct)
         {
-            foreach (var target in targets.Distinct())
+            foreach (var target in targets.Distinct().OrderBy(x => x.Order))
             {
                 await target.InitializeAsync(ct);