This morning I received an email from the Microsoft said that, a meaningful company, Microsoft Open Technologies Inc., had just release their first pre-production, the Redis on Windows. Redis If you had been working in the Linux world or interested in NoSQL field you should have probably known or heard about the Redis. Redis is an open source, advanced key-value store. Someone categorized Redis to the distributed cache since it’s an in-memory key-value store. Someone categorized it to the NoSQL,...
We are almost done everything about the WCF transport extension over the message bus, which makes our services can be scaled out by introducing more instances over machines and servers. We had finished the structure of our transport extension and implemented the request reply mode in the 2nd post, the datagram and duplex mode in the 4th and 5th post. As I have said at the end of the 5th post, currently we can use our transport extension. But there still something left. Although are not that major...
In our last post I demonstrated how to implement the datagram channel shape, and in the second and third post I described the request reply shape. In this post I will explain the last MEP in WCF, duplex, which is the most complex one. Basis of the Duplex Channel Shape (MEP) In the MSDN document it said that “The duplex MEP allows an arbitrary number of messages to be sent by a client and received in any order. The duplex MEP is like a phone conversation, where each word being spoken is a message....
In the previous posts we talked about the transport extension that scaling-out our WCF services over a message bus transportation. What we have done is to use request reply MEP as a example, and implement the asynchronous methods that makes our transport support the normal WCF usage – ServiceHost and ChannelFactory on service hosting and client invoking. Request reply MEP is the most common mode when we are using WCF, but there are two MEPs available in WCF as well: datagram and duplex. In this post...
In the previous post I demonstrated how to implement a very basic transport extension over an in memory message bus that supports request reply MEP. At the end of that post I created a console application and establish the service and client directly through the channel listener (on the server side) and the channel factory (on the client side). But this is not the WCF usage that we are familiar with. If you have been using the WCF for a while the common pattern is to create a ServiceHost on the server...
In my previous post I introduced the architecture of message bus based system, the dispatcher mode and the pulling mode. I also explained a bit about the channel mode and transport extensibility of WCF. And then, in order to make the following sample simple and easy to use I created an in process and in memory message bus. In this post, I will demonstrate how to create a WCF transport extension over this memory message bus, for the most common MEP – Request Reply mode. Before we go to the implementation,...
Cloud computing gives us more flexibility on the computing resource, we can provision and deploy an application or service with multiple instances over multiple machines. With the increment of the service instances, how to balance the incoming message and workload would become a new challenge. Currently there are two approaches we can use to pass the incoming messages to the service instances, I would like call them dispatcher mode and pulling mode. Dispatcher Mode The dispatcher mode introduces...
As many of you may already know that, I'm working at a global gaming and entertainment company taking the responsible for design and implement the next generation platform which will be running on the cloud, and also design the cloud platform as well. Currently one of the goal is to replace the active directory integrated security and identity solution with certificate-based solution in our product. In short, we need to work with Active Directory Certificate Service to request and issue the certificates...