diff --git a/src/Pole.Core/Extensions/PoleServiceCollectionExtensions.cs b/src/Pole.Core/Extensions/PoleServiceCollectionExtensions.cs
index 0ebe8ef..78c601c 100644
--- a/src/Pole.Core/Extensions/PoleServiceCollectionExtensions.cs
+++ b/src/Pole.Core/Extensions/PoleServiceCollectionExtensions.cs
@@ -17,7 +17,7 @@ namespace Microsoft.Extensions.DependencyInjection
 {
     public static class PoleServiceCollectionExtensions
     {
-        public static IServiceCollection AddPole(this IServiceCollection services,Action<StartupConfig> config)
+        public static IServiceCollection AddPole(this IServiceCollection services, Action<StartupConfig> config)
         {
             StartupConfig startupOption = new StartupConfig(services);
             if (startupOption.PoleOptionsConfig == null)
@@ -30,7 +30,12 @@ namespace Microsoft.Extensions.DependencyInjection
             services.AddScoped<IUnitOfWork, Pole.Core.UnitOfWork.UnitOfWork>();
             services.AddSingleton<ISerializer, DefaultJsonSerializer>();
             services.AddSingleton<IGeneratorIdSolver, InstanceIPV4_16IdGeneratorIdSolver>();
-            services.AddSingleton<ISnowflakeIdGenerator, SnowflakeIdGenerator>();
+            services.AddSingleton<IObserverUnitContainer, ObserverUnitContainer>();
+            using (var serviceProvider = services.BuildServiceProvider())
+            {
+                var generatorIdSolver = serviceProvider.GetService<IGeneratorIdSolver>();
+                services.AddSingleton(typeof(ISnowflakeIdGenerator), factory => new SnowflakeIdGenerator(new DateTime(2020, 1, 1), 16, generatorIdSolver.GetGeneratorId()));
+            }
 
             services.AddSingleton<IProcessor, PendingMessageRetryProcessor>();
             services.AddSingleton<IProcessor, ExpiredEventsCollectorProcessor>();
diff --git a/src/Pole.Core/Processor/PendingMessageRetryProcessor.cs b/src/Pole.Core/Processor/PendingMessageRetryProcessor.cs
index c2f10a9..2fefae9 100644
--- a/src/Pole.Core/Processor/PendingMessageRetryProcessor.cs
+++ b/src/Pole.Core/Processor/PendingMessageRetryProcessor.cs
@@ -17,17 +17,18 @@ namespace Pole.Core.Processor
     {
         private readonly IEventStorage eventStorage;
         private readonly PoleOptions options;
-        private readonly IProducer producer;
+        private readonly IProducerContainer producerContainer;
         private readonly IEventTypeFinder eventTypeFinder;
         private readonly ISerializer serializer;
         private readonly ILogger<PendingMessageRetryProcessor> logger;
         private readonly ProducerOptions producerOptions;
-        public PendingMessageRetryProcessor(IEventStorage eventStorage, IOptions<PoleOptions> options, ILogger<PendingMessageRetryProcessor> logger, IProducer producer, IEventTypeFinder eventTypeFinder, ISerializer serializer, IOptions<ProducerOptions> producerOptions)
+        public PendingMessageRetryProcessor(IEventStorage eventStorage, IOptions<PoleOptions> options, ILogger<PendingMessageRetryProcessor> logger,
+            IProducerContainer producerContainer, IEventTypeFinder eventTypeFinder, ISerializer serializer, IOptions<ProducerOptions> producerOptions)
         {
             this.eventStorage = eventStorage;
             this.options = options.Value ?? throw new Exception($"{nameof(PoleOptions)} Must be injected");
             this.logger = logger;
-            this.producer = producer;
+            this.producerContainer = producerContainer;
             this.eventTypeFinder = eventTypeFinder;
             this.serializer = serializer;
             this.producerOptions = producerOptions.Value ?? throw new Exception($"{nameof(ProducerOptions)} Must be injected");
@@ -70,6 +71,7 @@ namespace Pole.Core.Processor
                     pendingMessage.ExpiresAt = DateTime.UtcNow;
                 }
                 pendingMessage.Retries++;
+                var producer = await producerContainer.GetProducer(eventType);
                 await producer.Publish(bytes);
                 pendingMessage.StatusName = nameof(EventStatus.Published);
                 pendingMessage.ExpiresAt = DateTime.UtcNow.AddSeconds(options.PublishedEventsExpiredAfterSeconds);
diff --git a/src/Pole.Core/UnitOfWork/UnitOfWork.cs b/src/Pole.Core/UnitOfWork/UnitOfWork.cs
index 5b2d049..ca19828 100644
--- a/src/Pole.Core/UnitOfWork/UnitOfWork.cs
+++ b/src/Pole.Core/UnitOfWork/UnitOfWork.cs
@@ -18,15 +18,15 @@ namespace Pole.Core.UnitOfWork
 {
     class UnitOfWork : IUnitOfWork
     {
-        private readonly IProducer producer;
+        private readonly IProducerContainer producerContainer;
         private readonly IEventTypeFinder eventTypeFinder;
         private readonly ISerializer serializer;
         private readonly IEventStorage eventStorage;
         private readonly PoleOptions options;
         private IBus bus;
-        public UnitOfWork(IProducer producer, IEventTypeFinder eventTypeFinder, ISerializer serializer, IEventStorage eventStorage, IOptions<PoleOptions> options)
+        public UnitOfWork(IProducerContainer producerContainer, IEventTypeFinder eventTypeFinder, ISerializer serializer, IEventStorage eventStorage, IOptions<PoleOptions> options)
         {
-            this.producer = producer;
+            this.producerContainer = producerContainer;
             this.eventTypeFinder = eventTypeFinder;
             this.serializer = serializer;
             this.eventStorage = eventStorage;
@@ -45,6 +45,7 @@ namespace Pole.Core.UnitOfWork
                 var eventContentBytes = serializer.SerializeToUtf8Bytes(@event, eventType);
                 var bytesTransport = new EventBytesTransport(@event.Name, @event.Id, eventContentBytes);
                 var bytes = bytesTransport.GetBytes();
+                var producer = await producerContainer.GetProducer(eventType);
                 await producer.Publish(bytes);
                 @event.StatusName = nameof(EventStatus.Published);
                 @event.ExpiresAt = DateTime.UtcNow.AddSeconds(options.PublishedEventsExpiredAfterSeconds);
diff --git a/src/Pole.Core/Utils/InstanceIPV4_16IdGeneratorIdSolver.cs b/src/Pole.Core/Utils/InstanceIPV4_16IdGeneratorIdSolver.cs
index abadccf..5a892de 100644
--- a/src/Pole.Core/Utils/InstanceIPV4_16IdGeneratorIdSolver.cs
+++ b/src/Pole.Core/Utils/InstanceIPV4_16IdGeneratorIdSolver.cs
@@ -24,8 +24,10 @@ namespace Pole.Core.Utils
                 .Select(c => c.Address)
                 .FirstOrDefault();
 
-            var bytes = firstIpV4Address.GetAddressBytes();
-            generatorId = BitConverter.ToInt32(bytes, 2);
+            var bytes = firstIpV4Address.GetAddressBytes().TakeLast(2).Reverse().ToList();
+            bytes.Add(0);
+            bytes.Add(0);
+            generatorId = BitConverter.ToInt32(bytes.ToArray());
         }
         public int GetGeneratorId()
         {
diff --git a/src/Pole.EventStorage.PostgreSql/PostgreSqlEventStorageInitializer.cs b/src/Pole.EventStorage.PostgreSql/PostgreSqlEventStorageInitializer.cs
index 9a4fbd4..0d6f797 100644
--- a/src/Pole.EventStorage.PostgreSql/PostgreSqlEventStorageInitializer.cs
+++ b/src/Pole.EventStorage.PostgreSql/PostgreSqlEventStorageInitializer.cs
@@ -15,7 +15,7 @@ namespace Pole.EventStorage.PostgreSql
     {
         private readonly PostgreSqlOptions options;
         private readonly ILogger logger;
-        public PostgreSqlEventStorageInitializer(IOptions<PostgreSqlOptions> options,Logger<PostgreSqlEventStorageInitializer> logger)
+        public PostgreSqlEventStorageInitializer(IOptions<PostgreSqlOptions> options,ILogger<PostgreSqlEventStorageInitializer> logger)
         {
             this.options = options.Value;
             this.logger = logger;