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Derek Comartin

Queries with Mediator and Command Patterns

I recently got a really great comment from my post on using Query Objects instead of Repositories.  Although that blog post is now 2 years old, I still use the same concepts today in my applications. What I thought may be relevant is to elaborate more on why and when I use the mediator and command pattern for the query side. It may seem obvious on the command side, but not really needed on the query side. Here a portion of the comment from Chris: I’m struggling a bit to see the killer reason for using Query objects over repository. I can see… Read More »Queries with Mediator and Command Patterns

Environment Variables in ASP.NET Core

In my last post, I covered how to handle sensitive configuration data by using User Secrets while working in development or on your local machine.  The next step is how to use environment variables in ASP.NET Core once you deploy to production (eg Azure App Service)? If you have any questions, please follow me on Twitter.   https://www.youtube.com/watch?v=InyWktgdWJUVideo can’t be loaded because JavaScript is disabled: Multiple Environments in ASP.NET Core (DEV, PROD) (https://www.youtube.com/watch?v=InyWktgdWJU) IHostingEnvironment In your ASP.NET Core Startup class, the ctor has a IHostingEnvironment parameter.  One of the properties on it is the EnvironmentName.  Along with this are a few… Read More »Environment Variables in ASP.NET Core

Sensitive Configuration Data in ASP.NET Core

While working on my new side-project in ASP.NET Core, I was at the point where I needed to start storing sensitive configuration data. Things like my DocumentDB Auth Key, Google OAuth ClientId & Secret, Twilio Auth Token, etc. Depending on your context you may not want to be storing these types of application settings in configuration files that are committed to source control. As you would expect, my local environment for development and once I deploy to Azure have completely different configurations. So how do you change the configuration from local to production? If you are used to using appSettings from the app.config… Read More »Sensitive Configuration Data in ASP.NET Core