Topic Isolation - (Part 6) Testing the limits of Windows Azure Service Bus

Some time ago I wrote about how I manage to process millions of messages over Windows Azure Service Bus. I discover that processing millions of messages every hour will increase the latency and response time of our topic.

I wanted to find out what I happening with the topics from the same account and data center when the load of one of them increase drastically.

To be able to make this tests and discover the answer to my questions I made the following setup:

Create 3 topics on the same data center. Two on the same account and another one on a different account.
Create a worker role that will read messages from topics (via subscription) and monitor the delay time. The results will be written to Windows Azure Tables.
Create 8 worker roles that will push hundreds of thousands of messages in a very short period of time on the same topic (multi-threading rules).
Create 4 worker roles that will consume messages from our topic (via subscription).

In the end we end up with 12 worker roles that hit the same topic. Of course the latency of that topic increases, but we wanted to see if the rest of the topics are affected. I run this performance test for around 6 hours and …

The results of the test were extremely good. The second and 3rd topic where not affected by this load test. The latency remain the same for this 2 topics during the load test.

I’m very happy with this results. This is a confirmation that we will have a good performance on all of our topics. The topics are 100% isolated are not affected by the rest of out topics.

Comments

Windows Docker Containers can make WIN32 API calls, use COM and ASP.NET WebForms

After the last post , I received two interesting questions related to Docker and Windows. People were interested if we do Win32 API calls from a Docker container and if there is support for COM. WIN32 Support To test calls to WIN32 API, let’s try to populate SYSTEM_INFO class. [StructLayout(LayoutKind.Sequential)] public struct SYSTEM_INFO { public uint dwOemId; public uint dwPageSize; public uint lpMinimumApplicationAddress; public uint lpMaximumApplicationAddress; public uint dwActiveProcessorMask; public uint dwNumberOfProcessors; public uint dwProcessorType; public uint dwAllocationGranularity; public uint dwProcessorLevel; public uint dwProcessorRevision; } ... [DllImport("kernel32")] static extern void GetSystemInfo(ref SYSTEM_INFO pSI); ... SYSTEM_INFO pSI = new SYSTEM_INFO(

ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded

Today blog post will be started with the following error when running DB tests on the CI machine: threw exception: System.InvalidOperationException: The Entity Framework provider type 'System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer' registered in the application config file for the ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information. at System.Data.Entity.Infrastructure.DependencyResolution.ProviderServicesFactory.GetInstance(String providerTypeName, String providerInvariantName) This error happened only on the Continuous Integration machine. On the devs machines, everything has fine. The classic problem – on my machine it’s working. The CI has the following configuration: TeamCity .NET 4.51 EF 6.0.2 VS2013 It see

Navigating Cloud Strategy after Azure Central US Region Outage

Looking back, July 19, 2024, was challenging for customers using Microsoft Azure or Windows machines. Two major outages affected customers using CrowdStrike Falcon or Microsoft Azure computation resources in the Central US. These two outages affected many people and put many businesses on pause for a few hours or even days. The overlap of these two issues was a nightmare for travellers. In addition to blue screens in the airport terminals, they could not get additional information from the airport website, airline personnel, or the support line because they were affected by the outage in the Central US region or the CrowdStrike outage. But what happened in reality? A faulty CrowdStrike update affected Windows computers globally, from airports and healthcare to small businesses, affecting over 8.5m computers. Even if the Falson Sensor software defect was identified and a fix deployed shortly after, the recovery took longer. In parallel with CrowdStrike, Microsoft provided a too

Cloud as a Story - Vunvulea Radu

Search This Blog