Tagged articles - C#

Entity Framework Core implements optimistic concurrency strategy which is opposite to pessimistic concurrency strategy. Lets's first clear out what are main differences between these two approaches in concurrency control. Optimistic concurrency control allows multiple processes to access and modify data without any explicit lock on the data... read more

Versioning of your endpoints is important especially if you have 3rd party dependent clients of your REST API service. Any change in your endpoint, for example in data structure may impact clients even if it is backward compatible, clients may process your endpoint data in different ways, so even adding one additional property to your model may also impact functionality of the client which is consuming your endpoint. Prerequisites ... read more

Tagging Docker images is important to keep track of versions of the service running and to easily roll back in case of faulty behavior of the application. The version strategy which is the most clear and understandable is tagging image with version of the application for example ... read more

With growing popularity of dotnet Core, Git and Docker, developers who used to work mainly on Windows are now getting used to CLI environment and obviously Linux. Windows is still a development environment platform of choice, bit since Microsoft already developed and published Visual Studio Code as a cross platform IDE for Windows, Linux and Mac. Although it is still not mature as Visual Studio 2017, it is a decent tool for .NET Core applications development... read more

In memory caching is not a bullet proof way of caching data in an application, especially if this application is distributed. The lack of synchronization between nodes can cause you application to misbehave showing wrong data or even throwing exceptions and crashing. This is one of the main reasons why distributed caching is the best way of doing the caching in your web application. But not all applications you might be developing need to run as distributed on multiple machines... read more

For my website, since it runs on Umbraco 6 and it is basically ASP.NET MVC application. To reduce load time and increase website performances I decided to alternate the response of the application and minify it using simple regular expression. Initially I was trying to do this with YUI Compressor library which has .NET port as NuGet YUICompressor.NET which works fine in most of the cases, but in my case does not skip PRE tags which I use for code snippets on the website... read more

Caching common data like lookups for example in memory of your app can increase significantly your MVC web application performances and response time. Of course this data has to be periodically refreshed. You can use various approaches to refresh data including expiry, but this can create potential bottle necks in your application since once data expires, you will use request thread to pull the data, cache and serve the request response back... read more

Pixel tracking, although it is the oldest method for tracking conversions in marketing, it is still used widely and some big companies like Facebook are still overing it as one of the methods for tracking the conversions of on your web pages. Tracking conversion via pixel method is still widely used because of it's simplicity... read more

Limiting the number concurrently running Tasks is not that often requirement in a code, but eventually you'll find yourself in the situation that for the most likely performance issues you'll have to limit number of concurrently running Tasks. One of these situations is when you have long running operations in the Task. If you spin up to many Tasks you will seriously degrade your application performance... read more

As ASP.NET was evolving, there were different ways accessing client IP address from the request. The way to do it WebForms and MVC Web application is simply accessing request of the current HTTP context ... read more

Microsoft introduced a new feature called Global Tool with the new .NET Core release 2.1. Essentially, global tools are simple console applications which can be invoked from the console... read more

I wrote about boosting performances by choosing the right serialization in .NET projects. The top best performing according to my tests and many of the online comparisons are Apache Avro and Google Protocol Buffer (Protobuf) serialization... read more

Recently I wrote about setting up .NET Core Identity Framework and Token based authentication in ASP.NET Core using symmetric key signing. The downside of this approach is that both identity and resource server share the same key for signing and validating the token... read more

In article Token based authentication and Identity framework in ASP.NET Core - Part 1 I described how to setup identity library for storing user accounts. Now we are going to setup ASP.NET Core Web API project to issue the token for authenticated users so they can access protected resources. Identity Web API instance will be separated from from the resource Web API, so we'll have eventually two and possibly in future more resource services which will all use single identity server fr authentication and issuing access tokens. ... read more

In ASP.NET Core identity framework is introduced as a membership provider making user management, authentication and authorization. It is built on to Entity Framework Core ORM which allows you to be storage type independent... read more