I’ve always enjoyed building systems that utilized flexible messaging platforms. Before joining Microsoft, I was a member of a small ISV team that built a commercial .NET based ESB product (a rare creature in and of itself) that was primarily a...

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Introduction In the first article of the series we discussed how to exchange messages with an orchestration via a two-way WCF Receive Location using the Duplex Message Exchange Pattern . This form of bi-directional communication is characterized by the...

This blog entry is a sequel to the October 30th Blog “ Securing WCF Services hosted in Windows Server AppFabric with Windows Identity Foundation (WIF) ” where we demonstrated how to use WIF to secure Services hosted in AppFabric. And in this...

  The following is a good place to get started with how to go about collecting basic information for monitoring and/or troubleshooting an App Fabric (AF) cache setup (Host/Cluster and clients). It starts by pointing to some resources on the different...

Process data, commonly accessed from OPC or a process historian such as OSIsoft PI, is well suited for analysis using StreamInsight – being time-series data with data values from a range of sensors. In this post, I’ll walk through a couple...

A number of customers are choosing to use Entity Framework with Microsoft SQL Azure , and rightfully so. Entity Framework provides an abstraction above the database so that queries are developed using the business model or conceptual model and queries...

Even though this topic looks obvious, there have been some interesting customer scenarios centered around this topic. I am hoping that this blog helps for decision making. As a basic tenet, in most solutions, a distributed cache will be used along with...

A couple of weeks ago I was working with a customer who engaged me to assist with a "little" problem they had – under certain conditions, the system would lose messages coming from a MSMQ queue and designed to correlate to instances of a long-running...

The LINQPad driver for StreamInsight provides an awesomely easy way to run StreamInsight queries using easily accessible data contexts of temporal streams. However, as LINQPad only supports a single active data context connection in a query it can be...

Occasionally, when working with StreamInsight queries an unusual result will crop up, leading to asking the rather blunt question “where did that come from?”. Luckily the StreamInsight Event Flow Debugger has a great feature ( Root Cause Analysis...