Category Archives: Microsoft Azure

C# Azure TelemetryClient will leak memory if not implemented as a singleton

Posted on May 7, 2020 by

I noticed that my classic .net web application would leak memory after I implemented metrics for some background tasks. Further investigation showed that my MetricAggregationManager would not release its memory. Since one of the major changes was the implementation of … Continue reading →

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C# Get expiry timestamp from JWT token

Posted on February 27, 2020 by

JWT tokens (or Json Web Tokens) are an open-standard the defines a way to transmit information between 2 parties in a secure manner. Identity Server 4 uses JWT as a security token. These tokens have an expiry timestamp, and if … Continue reading →

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Application Insights not working in .NET Core Console Application – Remember to flush the TelemetryClient

Posted on February 19, 2020 by

My .NET Core console application did not write to my Application Insights instance. Well, it did, but only sometimes. Writing to Application Insights is done asynchronously, usually every 30 seconds or 500 items. This means that you need to give … Continue reading →

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Azure App Configuration – Getting the connection string from appsettings.json

Posted on February 14, 2020 by

Azure App Configuration is a services that provides a central place to manage application settings, and it provides cool features like feature flags and auto refresh of settings when they are changed. To access Azure App Configuration from your .NET … Continue reading →

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.NET Core Api – Catch exceptions using a middleware

Posted on December 6, 2019 by

In .NET Core, we are starting to get used to the fact that nothing comes for free, and in the world of ultimate freedom of choice, every feature needs to be implemented by us. This includes error handling. In a … Continue reading →

Posted in .NET Core, c#, Microsoft Azure | Tagged , , , | 4 Comments

Sitecore and Application Insights – How to remove 90% of all log lines without sacrificing traceability

Posted on December 5, 2019 by

In this article I will explain how you can remove up to 90% of all log lines from the Application Insights log, but still keep every log line in the file log. All of this without loosing any important information. … Continue reading →

Posted in Microsoft Azure, Sitecore 8, Sitecore 9 | Tagged , , , , , | 2 Comments

.NET Core Catch Model Binding Exceptions

Posted on November 29, 2019 by

In .NET Core, if you create an API project, and you have an controller receiving an object you defined yourself, the controller will not be called if you use the wrong model, or if the model is not in a … Continue reading →

Posted in .NET Core, c#, Microsoft Azure | Tagged , , | 1 Comment

Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the ‘await’ operator to the result of the call

Posted on October 23, 2019 by

This C# warning occurs if you call an async method from your non-async code. Imagine you have this imaginary async method: And you call the method from this imaginary non-async method: The compiler will warn you with the following message: … Continue reading →

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Sitecore use Application Insights Metrics and Telemetry

Posted on August 2, 2019 by

Although Sitecore have an integration for Application Insights (which is part of Azure Monitor), you can implement the TelemetryClient yourself. This is useful if you wish to log Metrics or Trace your own code, without involving the complete Sitecore solution. … Continue reading →

Posted in .net, c#, Microsoft Azure, Sitecore 7, Sitecore 8, Sitecore 9 | Tagged , , | 1 Comment

Calling Azure Functions from JavaScript – The CORS configuration

Posted on May 31, 2019 by

You cannot call Azure Functions from JavaScript unless you configure the CORS settings for your Function Apps: This is because Microsoft have by default enabled CORS and only allows only some azure domains to access the Function Apps: So to … Continue reading →

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