Service Fabric and “Not Authorized to Connect” error

ppolyzos March 24, 2017 748 0 Comment
Notes

When starting playing with Service Fabric in Visual Studio, you may come to the following error when trying to debug your application:

The error although may look tricky, is very easy to fix and happens when you have created a Service Fabric application and accidentally Set as Startup Project the Fabric Service, as showing in the following picture: So, Set as Startup Project the Service Fabric…

Add Colors to Elixir’s Interactive Shell (IEx)

ppolyzos March 16, 2017 628 0 Comment
Notes

A great tool, when starting learning Elixir, is Elixir’s Interactive Shell (IEx), which allows you to type any Elixir expression and get its result. To start using IEx, open a terminal of your choice and type iex (or iex.bat if you are on Windows), which stands for Interactive Elixir. By default, colors are not enabled and iex looks like what you see below: It turns out…

Add Application Insights in a .NET Core App using VS 2017 and Connected Services

ppolyzos March 7, 2017 976 0 Comment
.NET

Visual Studio 2017 is now available to download, and one interesting feature thereof is connected services, which enable connections between your app and any service on-premises or in the cloud. In this post we are going to demonstrate how easy it is to connect your asp.net core web app to Application Insights. “Connected Services” is the new “Add Connected Service” or “Add Service Reference” feature…

Keep things tidy by renaming your Azure subscriptions

ppolyzos February 24, 2017 714 0 Comment
Notes

To keep things tidy, in case you have multiple subscriptions associated with your Azure account, it’s a good practice to name them in a way that makes sense to you. For example, if you have an msdn subscription, the default name in Azure Portal is “Visual Studio Enterprise“, or if you have applied for a Visual Studio Dev Essentials program, the default name is “Developer Program…

Azure App Service: Check your web app’s availability

ppolyzos February 19, 2017 540 0 Comment
Notes

Azure App service provides an easy way to track your web app’s availability / health and to get details on when and why your app wasn’t available. This kind of info is available through the web app’s blade, when selecting Diagnose and solve problems A new page appears with details on: app’s availability; requests per 5 minutes; and when and why your app…

Move Azure web apps between different app service plans

ppolyzos February 16, 2017 1030 0 Comment
Articles

There are times when you might want to move an app from one App Service plan to another. This can be done easily through Azure Portal, provided that the app service plans comply with the restrictions below, namely that they are: in the same resource group, and in the same geographical region. Let’s assume that you have a web app called web-app-demo-1 and three different…

Running Elixir’s Interactive Shell (iex) in Powershell

ppolyzos February 10, 2017 786 0 Comment
Notes

IEx is Elixir’s interactive shell, where you can type any Elixir expressions and get its result. One issue you might come across when trying to use iex in Powershell, through a command e.g. iex -S mix, you might get the following error:

The problem is that iex is an alias in Powershell, for Invoke-Expression

Solution To overcome this problem you simply use iex.bat…

Response caching & GZip compression in asp.net core web application

ppolyzos February 5, 2017 846 1 Comment
.NET

Some really easy ways to improve performance in your asp.net core web application are: response caching, which adds cache-related headers to responses, to reduce the number of requests a client makes to your web server; compressing response using gzip to reduce its size. You may start with the default asp.net core web application, apply the above steps and check the result. Setup…

Tracking request headers in Application Insights

ppolyzos January 29, 2017 1092 0 Comment
Articles

Application Insights is an extensible Application Performance Management (APM) service for web developers. It provides rich performance monitoring, powerful alerting, and easy-to-consume dashboards to help ensure your applications are available and performing as you expect. One of the powerful characteristics of Application Insights is that it provides an extensible API where you can customize the behavior of the standard telemetry modules the way…

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