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Wednesday, July 23, 2008 5:00 AM

Help with Security Programming

Security programming today tends to contain large amount of plumbing code to handle the modeling, management, and evaluation of identities. An identity is the basis of many common security operations, such as authentication, personalization, authorization,
Posted by Nicholas Allen | 1 Comments
Monday, July 14, 2008 5:00 AM

Architect Insight Conference Talks

Slide decks are available from the Architect Insight Conference 2008 held in the UK at the end of April. These talks are fluffier than ones that I normally point to and since you only have the slides and not the audio, I recommend picking a few based
Posted by Nicholas Allen | 0 Comments
Friday, July 11, 2008 5:00 AM

Naming Contracts for Versioning

Some tips for building support for versioning into the naming of data contracts. First, the primary route for versioning should be through the namespace part of the contract rather than the member name part of the contract. Versioning the contract through
Posted by Nicholas Allen | 1 Comments
Thursday, June 05, 2008 5:00 AM

Improving Web Services Security Beta Guide

The WCF Security Guide content that I've mentioned a few times before is now done with early drafts and has been rolled up into a beta release of the full book. There's a ton of content in the real thing on top of what you've been seeing in the drafts.
Posted by Nicholas Allen | 1 Comments
Monday, June 02, 2008 5:00 AM

Managed Services Engine June CTP

I'm a big fan of using service virtualization to solve a variety of problems with developing and managing web services. The Managed Services Engine is a solution built on top of WCF to supply a repository-based runtime and management tool for service
Posted by Nicholas Allen | 1 Comments
Tuesday, May 20, 2008 5:00 AM

Avoid Exceptions in Faults

FaultException supports both an untyped variant, for when you don't have any particularly interesting detail to provide, and a typed variant, for when you do. Don't use a subclass of Exception as the type of a typed FaultException. Here's why. When you
Posted by Nicholas Allen | 3 Comments
Tuesday, September 25, 2007 5:00 AM

When to Use Remoting

One of the things that happens when a new technology framework is introduced with new patterns and best practices is that people wonder what's going to happen with the frameworks that they use today. When WCF was announced a few years ago, users of Remoting
Posted by Nicholas Allen | 3 Comments
Monday, July 16, 2007 5:00 AM

Local Settings and Policy

You have talked in the past about how a service has both local settings and settings that are shared through policy. How can I transmit all settings through policy to the client? The two types of settings are clearly distinguishable. Shared settings are
Posted by Nicholas Allen | 1 Comments
Tuesday, June 12, 2007 5:00 AM

BeginInvoke Bugs

A delegate is a special type that can be bound at execution time to a method invocation. Normally you'd think of method invocations as being synchronous, but delegates can be executed either synchronously in the obvious way or asynchronously by introducing
Posted by Nicholas Allen | 3 Comments
Monday, May 07, 2007 5:00 AM

Optimizing MSMQ

How can I speed up message processing when using MSMQ with WCF? For small gains, it is generally possible to eke out a few percentage points of performance by tuning parameters and settings according to the application domain knowledge you have. For large
Posted by Nicholas Allen | 1 Comments
Tuesday, April 17, 2007 5:00 AM

Throttling Sessions

How do I push back against clients that are tying up the external connections of my service? The amount of service connection resources used by the client can be thought of as a product of two dimensions. The first dimension is the number of connections
Posted by Nicholas Allen | 1 Comments
Thursday, March 29, 2007 5:00 AM

SSL and System Time

A few days ago I decided to upgrade my home machine from 1 GB of RAM to 2 GB. I've been running Vista at home since last summer and it occasionally gets cranky when it runs out of memory. After the usual problems of fiddling with hardware, everything
Posted by Nicholas Allen | 0 Comments
Friday, February 23, 2007 5:00 AM

Tuning Contracts for Performance

I have a service contract with a few operations that take large inputs and do a lot of processing. If I configure the service quotas with small values to prevent too many of the expensive operations from happening at once, then the overall throughput
Posted by Nicholas Allen | 1 Comments
Friday, February 09, 2007 5:00 AM

Poison Message Handling

I've got a few posts on queued and durable messaging coming up over the next few weeks, and we're going to need some vocabulary for those posts that hasn't been used yet while talking about web services. Today's article covers general background around
Posted by Nicholas Allen | 2 Comments
Wednesday, February 07, 2007 5:00 AM

You Can't Fake Correlation

How do I construct callbacks to work over a load balancer without affinity? Let's construct a scenario to demonstrate this question. I have three machines; call them X, Y, and Z. X and Y are together behind a network load balancer. This is a server to
Posted by Nicholas Allen | 1 Comments
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