Rajesh Kumar

🌍 The World of OWASP and the OWASP Top Ten A complete introductory tutorial 1. What is OWASP? OWASP stands for Open Worldwide Application Security Project.It’s a…

Let’s build a single, clean demo project that you can use in training as: It will show: Let’s build a single, clean demo project that you can…

While you don’t need a law degree to detect a bad contract, until recently, you did need $250–2000 — that’s how much lawyers typically charge to review…

The game industry never really slows down — but 2026 feels like a turning point. Players are harder to impress, expectations are sky-high, and technology is rewriting…

1. What Are Benchmarks? A benchmark is a controlled, repeatable experiment that measures the performance characteristics of a piece of code. A good benchmark answers questions like:…

We can do this with one self-contained minimal API that has: 1️⃣ Create the project Replace all contents of Program.cs with this: This single file gives you:…

Yes, we can absolutely do this in one self-contained program 👍You’ll be able to: Below is a single Program.cs you can drop into a new console app….

I’ll give you: 1️⃣ Create the demo app Now replace the entire Program.cs with this: This is self-sufficient: one file, no extra classes, no extra projects. 2️⃣…

This will be a fun little lab. Let’s make one self-contained Program.cs you can run from command line and flip between TLS 1.2 and TLS 1.3 without…

PerfView is basically the Swiss-army knife for .NET performance—CPU, GC, memory, thread time, and arbitrary ETW events—all in one (slightly ugly but insanely powerful) tool. Let’s turn…

1. What is dotTrace? Definition What it actually does Profiling modes (high level) 2. Why and When to Use dotTrace Why use dotTrace? Use dotTrace when you…

1. What is dotnet-gcdump? dotnet-gcdump is a lightweight .NET memory profiling tool that collects GC (Garbage Collector) heap dumps with minimal performance overhead. It gives you: It…

1. What is dotnet-trace? dotnet-trace is a .NET Core/ .NET CLI diagnostic tool that collects runtime traces from your app using EventPipe. Think of it as: It…

A Complete Practical Guide for Memory Profiling Using Command Line 1. 🔍 What is dotMemory Console? dotMemory Console (also called dotMemory Command-Line Profiler) is the free, headless…

This is a high-quality, long-form document that covers: ✔ What✔ Why✔ When✔ Key Terminology✔ How it works internally✔ How to use it (step-by-step)✔ .NET–specific examples✔ Real-world use…

🎯 Lab Objective By the end of this lab, you will be able to: ✔ Launch and use Resource Monitor✔ Analyze CPU, Memory, Disk, and Network usage…

Windows provides two extremely powerful built-in tools for performance diagnosis: Both are essential for SRE, DevOps, Performance Engineering, .NET Developers, Windows Admins, and Troubleshooting Teams. Even though…

This is the official-level guide that includes:✔ What✔ Why✔ When✔ Architecture✔ Key Terminology✔ How to Use (Step-by-Step)✔ CPU / Disk / Network / Memory deep explanation✔ Use…

Below is the definitive, step-by-step list of PerfMon counters you must add for .NET / ASP.NET Core / API / Microservices performance optimization. This is the same…

It covers EVERYTHING you need: ✔ What PerfMon is✔ Why PerfMon is used✔ When to use PerfMon✔ PerfMon Architecture✔ Key Terminologies✔ How PerfMon works✔ How to use…

✅ dotnet-counters – Command Reference (Explained Simply) When you run: You see 4 main commands: Below is a simple explanation for each. 🟦 1. dotnet-counters monitor Real-time…

1. What this screen is showing How to install? $ dotnet tool install –global dotnet-counters Your command: $ dotnet-counters ps And the section you pasted is only…

Real-Time Diagnostics for .NET Runtime, ASP.NET Core, EF Core, Networking & More 1. Introduction to dotnet-counters dotnet-counters is a cross-platform performance monitoring tool for .NET applications. It…

✅ 1. Install Docker (if not installed) ✅ 2. Start Wetty using Docker (recommended + stable) This avoids all Node/gc-stats errors you faced earlier. Run Wetty in…

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

It is constructed specifically to demonstrate real-world performance engineering concepts in .NET, using a scenario every enterprise system deals with: bulk inserts, EF Core behavior, SQL bottlenecks,…

.NET 10.0 SDK (v10.0.100) – https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-10.0.100-windows-x64-installer Visual Studio – https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community&channel=Stable&version=VS18&source=VSLandingPage&cid=2500&passive=false Microsoft SQL Server – https://www.microsoft.com/en-in/sql-server/sql-server-downloads Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I…

Below is everything shown in your Visual Studio Installer – Individual components screenshots, converted into plain text. .NET AI Assistance Cloud, database, and server Code tools Compilers,…

✅ 1. .NET (formerly .NET Framework / now .NET 5+) .NET is the overall software development platform from Microsoft.It provides: Key note: Originally there was .NET Framework…

Why Your Business Needs a Microsoft Dynamics CRM Consultant Choosing the right software development partner is one of the most important decisions for any business aiming to…