Development Blogs

Have you ever wanted to add a method to an existing class (like string, DateTime, or even your own types) — without changing its source code? That’s exactly what extension methods in C# are for. 🚀 What Is an Extension Method? An extension method lets you "extend" an existing type (class or struct) with new methods , without modifying the type itself . ✅ It feels like you're adding a method to the type ✅ But you're really writing a static method with a special syntax 🧪 Real-Life Example Let’s say you want to capitalize the first letter of a string: ❌ Without Extension: csharp public static class StringUtils {     public static string Capitalize(string value)     {         if (string.IsNullOrEmpty(value)) return value;         return char.ToUpper(value[0]) + value.Substring(1);     } } Usage: csharp string name = "...

  In today’s security-conscious world, it’s no longer enough to just log errors and crashes. You need to log security-related events too — for compliance , auditing , and incident response . That’s where SIEM logs come in. 🧠 What is SIEM? SIEM (Security Information and Event Management) is a security solution that helps organizations collect, store, analyze, and alert on security-related logs and events. Popular SIEM platforms include: 🛡️ Splunk 📊 IBM QRadar ☁️ Microsoft Sentinel 🧭 Elastic SIEM 🔍 ArcSight 📦 What Are SIEM Logs? SIEM logs are not a specific format. They’re structured logs that contain security-relevant events , such as: User logins / logouts Failed login attempts Access to sensitive data Privilege escalation System configuration changes These logs are sent from apps and servers to a central SIEM system , where they are: Parsed Correlated Stored Alerted upon 🧱 Anatomy of a Good...

  Have you ever seen this error? Access to fetch at 'http://api.example.com/data' from origin 'http://localhost:4200' has been blocked by CORS policy 😖 Frustrating, right? Don’t worry — it’s a CORS issue , and in this post, we’ll break it down and solve it . 🧠 What is CORS? CORS (Cross-Origin Resource Sharing) is a browser security feature that controls how web pages can make requests to a different domain than the one that served the web page. 🔒 Same-Origin Policy Browsers follow the Same-Origin Policy , which means: A frontend running on http://localhost:3000 Cannot make API calls to http://api.mysite.com (a different origin) Unless the server allows it via CORS headers 🧾 CORS in Real Life Imagine your Angular app runs at: http://localhost:4200 And your .NET Core Web API runs at: http://localhost:5000 By default, if you try to call the API from the frontend, the browser will block the request unless...

  If you're building APIs or modern web apps, you've probably heard of JWT . But what is it, really? In this post, we'll break down: What JWT is How it works Why and when to use it How to implement it in a .NET Core API 🚀 What is JWT? JWT stands for JSON Web Token . It’s a compact, URL-safe token used to securely transmit information between two parties — typically between a client and a server. Unlike traditional session-based authentication (which stores session data on the server), JWT is stateless . All the information is stored in the token itself . 🧱 Structure of a JWT A JWT has three parts , separated by dots: xxxxx.yyyyy.zzzzz 1. Header Specifies the type of token and the algorithm used to sign it. json {   "alg": "HS256",   "typ": "JWT" } 2. Payload Contains the claims (data like user ID, roles, expiration, etc.). json {   "sub": "1234567...