diff --git a/samples/Sample.RabbitMQ.MySql/AppDbContext.cs b/samples/Sample.RabbitMQ.MySql/AppDbContext.cs
index 60f4622..ce3535d 100644
--- a/samples/Sample.RabbitMQ.MySql/AppDbContext.cs
+++ b/samples/Sample.RabbitMQ.MySql/AppDbContext.cs
@@ -11,7 +11,7 @@ namespace Sample.RabbitMQ.MySql
 
     public class AppDbContext : DbContext
     {
-        public const string ConnectionString = "Server=192.168.10.110;Database=testcap;UserId=root;Password=123123;";
+        public const string ConnectionString = "Server=localhost;Database=testcap;UserId=root;Password=123123;";
 
         public DbSet<Person> Persons { get; set; }
 
diff --git a/samples/Sample.RabbitMQ.MySql/Controllers/ValuesController.cs b/samples/Sample.RabbitMQ.MySql/Controllers/ValuesController.cs
index 503fcdb..a9c2c96 100644
--- a/samples/Sample.RabbitMQ.MySql/Controllers/ValuesController.cs
+++ b/samples/Sample.RabbitMQ.MySql/Controllers/ValuesController.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Data;
+using System.Threading.Tasks;
 using Dapper;
 using DotNetCore.CAP;
 using Microsoft.AspNetCore.Mvc;
@@ -18,9 +19,9 @@ namespace Sample.RabbitMQ.MySql.Controllers
         }
 
         [Route("~/without/transaction")]
-        public IActionResult WithoutTransaction()
+        public async Task<IActionResult> WithoutTransaction()
         {
-            _capBus.Publish("sample.rabbitmq.mysql", DateTime.Now);
+            await _capBus.PublishAsync("sample.rabbitmq.mysql", DateTime.Now);
 
             return Ok();
         }