Author: Rajesh Kumar

Think cybersecurity careers are out of reach because you didn’t major in computer science? Think again. The cybersecurity field faces a severe talent shortage, with hundreds of thousands of open…

You don’t need a hotel or tourism degree to lead in hospitality. The global hospitality industry welcomes professionals from diverse backgrounds, finance executives, designers, event planners, educators, and corporate managers,…

Data is at the center of all modern industries, enabling AI systems, Fintech platforms and medical diagnostics and autonomous logistics, as well as cybersecurity, smart retail as well as digital…

Tool Category / Purpose What Problem It Solves Why Use This Tool (Key Strengths) When to Use (Training/Capstone Flow) dotnet-counters Live runtime diagnostics Check CPU, GC, allocations, thread pool health…

Category Tool Name Type Purpose / What It Does Best For Cost Built-in SQL Server Tools Query Store Native feature Captures query history, execution plans, regressions; identifies top slow queries….

1. Recommended GitHub Application Chosen app: NimblePros/eShopOnWeb Repo: https://github.com/NimblePros/eShopOnWeb (GitHub) Why this one: We’ll treat: 2. Capstone: High-Level Structure Your “DOTNET Performance Optimization Capstone” will use eShopOnWeb and walk students…

A Complete End-to-End Guide for High-Performance Data Access in ASP.NET Applications ⭐ PREFACE Modern ASP.NET applications rely heavily on databases—not just to store records, but to power product features, analytics,…

1. What are finalizers, really? When you delete a Kubernetes object (CRD, Namespace, Pod, etc.), Kubernetes does not delete it immediately. Instead it: A finalizer is just a string tag…

Modern companies generate huge amounts of data, yet many still struggle to use it in a practical and timely way. Centralized setups slow decisions and overload a single data team…

Hospitals depend on data the way hearts depend on rhythm. When that rhythm skips, outcomes suffer. Each dataset tells a patient’s story, and engineers shape how clearly that story is…

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 Landmark, stock market…

✅ IIS-Only Performance Optimization Settings (Complete List) 1. Application Pool Settings (IIS Core) ✔ Start Mode ✔ Idle Time-out ✔ Worker Process Settings ✔ Recycling Settings 2. Site-Level Performance Settings…

0. First principle: measure before tuning Before touching settings: 1. OS & Hardware-level optimizations These are outside IIS but critical: 2. IIS application pool tuning 2.1 .NET CLR & pipeline…

ChatGPT Atlas 1. What is ChatGPT Atlas? ChatGPT Atlas is a new web browser developed by OpenAI that deeply integrates the ChatGPT conversational AI into the browser experience. ()Key facts:…

We’ll run RabbitMQ in Docker on an AWS EC2 instance, and use your Windows laptop for both the producer and consumer. I’ll walk you through: 1. Provision AWS EC2 for…

1. Big picture – why messaging in .NET? In modern .NET systems, you almost never want services talking to each other via direct HTTP calls only. Messaging brokers give you:…

Below is a complete, runnable .NET 8 demo where: You’ll be able to feel the difference. 1. Solution structure We’ll build this: Target: .NET 8.0 (works with future .NET 10+…

Here’s a single, self-contained console app that lets you experience the difference between: You’ll see timing + GC stats for both in the same run. 1️⃣ Full Code – Program.cs…

This is a perfect demo topic. Here’s a single, self-contained console app that lets you feel the difference between: You’ll get timing + GC stats for both in the same…

Here’s a single, self-contained console app you can run to see and feel the difference between: It includes: Works on any modern .NET (7/8/9/10+). 1️⃣ Full Code – Program.cs 2️⃣…

1. Install k6 on Windows You have a few options. I’ll show the two easiest: Option A – Using winget (recommended if available) Option B – Using Chocolatey If you’re…

📘 OWASP TOP 10 — COMPLETE IN-DEPTH GUIDE (BASIC → ADVANCED) Covers all 10 categories with: 🔥 A01 — BROKEN ACCESS CONTROL The #1 risk because access control failures appear…

OWASP Top 10:2025 – Release Candidate (RC1) is the new draft version of the OWASP Top 10, published on 6 November 2025 as the 8th edition of the project. It’s…

Location intelligence has become a core requirement for modern digital products. Whether you’re building a delivery tracker, a ride-hailing platform, an on-demand service app, or a real-estate search tool, accurate…

Instagram’s evolution from photo-sharing app to commerce powerhouse has made its data invaluable for businesses, marketers, and developers. Yet accessing this data has become increasingly complex as Meta tightens restrictions…

Think about how you talk to customers today. You may have a CRM, support tool, email system, chat widget, and a few internal dashboards. All of that sits nicely together…

An inefficient recruitment process brings hires who impact your performance. Thus, you want to use every strategy in the book to attract suitable candidates. Have you considered using recruitment data?…

Financial forecasting is crucial in today’s world because it enables informed and timely decision-making. An overview of key metrics is necessary for effective financial forecasting. Among the top features of…