Skip to main content

Service Bus - Introduction to Service Bus of Windows Azure

With the last versions of Windows Azure, Service Buss from Windows Azure updated and having a log of new features. I will write a series of posts about Service Buss from the Windows Azure.
I saw that there are a lot of persons that don’t know what Service Buss is. So, let’s try to define what Service Buss means in general.
Service Bus is an architecture model that is used to create applications (or modules) that need to communicate and interact between each other. The way that they are communicating is asynchronous and they are oriented to a design that uses messages. Any kind of communication between components is made using messages. One important feature of Service Buss, it that a specific message is sends to the Service Buss, without specifying a specific receiver. Based on the message the Service Buss can broadcast the message to one, two or 10 listeners.
In the current version of Windows Azure we have three types of Service Bus:
  • Service Bus Queues
  • Service Bus Topics
  • Service Bus Relay
Service Bus Queues use as the name say, use a queue to communicate between the sender and the receiver. In this way the sender (the producer) don’t need to wait the message to be consumed by the receiver and can working. The receivers are able to pull from the queue messages that were send in the same order that the producer added to the Service Buss Queue. This type of communicate support a brokered messaging communication model.
One important think that we need to notify at this type of service bus is the numbers of consumers for each message. A message will be able to be consumed by only one consumer, and only one.
The next type of service bus is Service Bus Topics. From the perspective of the producer it is very similar. The consumer creates a message and sends it to the service buss. The consumer of this messages need to as for the Service Bus Queues register to the service bus. We will be notified each time when a message is available in the service bus. The main difference is the numbers of subscribers that can exist for each message. In the Service Bus Queues we had only one, but in this type of Service Bus we can have multiple subscribers. Each message will be send to each subscriber.
This type of communication is one-to-many and represent the publish/subscribe communication model. When we will talk about this type of service bus will describe how it was implemented.
The last type of service bus is Service Bus Relay. This last type of service bus doesn’t use messages as we expect. He helps us to create WCF services for applications that are hosted on on-premise servers not only in cloud. It offers us a safe method to expose WCF services from our on-premise servers and accessed from cloud or by other clients in a very safe way. It enable us to secure the access to services and offer access to WCF services without creating custom rules on our on-premise network and firewalls. Using this feature we can very easily and safe expose WCF services from our private networks without having security problems.
We saw what kind of Service Bus exists on Windows Azure. In the next series of post we will talk about each of one in details.

Comments

Popular posts from this blog

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(...

How to audit an Azure Cosmos DB

In this post, we will talk about how we can audit an Azure Cosmos DB database. Before jumping into the problem let us define the business requirement: As an Administrator I want to be able to audit all changes that were done to specific collection inside my Azure Cosmos DB. The requirement is simple, but can be a little tricky to implement fully. First of all when you are using Azure Cosmos DB or any other storage solution there are 99% odds that you’ll have more than one system that writes data to it. This means that you have or not have control on the systems that are doing any create/update/delete operations. Solution 1: Diagnostic Logs Cosmos DB allows us activate diagnostics logs and stream the output a storage account for achieving to other systems like Event Hub or Log Analytics. This would allow us to have information related to who, when, what, response code and how the access operation to our Cosmos DB was done. Beside this there is a field that specifies what was th...

Cloud Myths: Cloud is Cheaper (Pill 1 of 5 / Cloud Pills)

Cloud Myths: Cloud is Cheaper (Pill 1 of 5 / Cloud Pills) The idea that moving to the cloud reduces the costs is a common misconception. The cloud infrastructure provides flexibility, scalability, and better CAPEX, but it does not guarantee lower costs without proper optimisation and management of the cloud services and infrastructure. Idle and unused resources, overprovisioning, oversize databases, and unnecessary data transfer can increase running costs. The regional pricing mode, multi-cloud complexity, and cost variety add extra complexity to the cost function. Cloud adoption without a cost governance strategy can result in unexpected expenses. Improper usage, combined with a pay-as-you-go model, can result in a nightmare for business stakeholders who cannot track and manage the monthly costs. Cloud-native services such as AI services, managed databases, and analytics platforms are powerful, provide out-of-the-shelve capabilities, and increase business agility and innovation. H...