This guide shows how to generate an SSH key and configure a Linux server so that SSH authentication is performed only with an SSH key, without allowing login using the user’s password.

This guide contains common Linux administration commands useful when managing a VPS, especially Ubuntu/Debian-based servers.

This guide contains common Docker commands and practical examples useful for managing Docker on a Linux server or VPS.

This guide explains the most important dotnet commands, grouped logically.
You do not need to memorize everything — learn the structure and look up details when needed.

Modern applications are no longer limited to classic server-rendered web pages. Today we build APIs, SPAs (Angular, React), and mobile applications, all of which require a secure and scalable authentication mechanism.

One of the most widely used solutions is JWT (JSON Web Token) authentication.

This guide contains common Git commands and practical examples for day-to-day development.

Configuration is a core part of every ASP.NET Core application.
Before comparing IOptions, IOptionsSnapshot, and IOptionsMonitor, let’s first understand how configuration classes are created and registered.

IOptions vs IOptionsSnapshot vs IOptionsMonitor in ASP.NET Core

What is the launchSettings.json file?

• Location: Properties\launchSettings.json
• Purpose: defines local run profiles — URLs, HTTPS, environment variables, and startup behavior.
• Important: used only during local development (dotnet run, Visual Studio); does not affect production.

When you start learning ASP.NET Core, the Program.cs file can feel overwhelming.
So many methods, so many configurations — authentication, middleware, services, pipelines…

Here’s the good news:

• You do NOT need to memorize everything in Program.cs
• You only need to understand how it works conceptually

This article will help you build a simple mental model so you always know what goes where — even if you forget the exact syntax.

When you create an ASP.NET Core web app, it runs on a web server. You might have heard about Kestrel and IIS — but what’s the difference between them? Let’s keep it simple.