Rajesh Kumar

Here’s the exact JMeter setup to create Owners athttp://43.204.220.89:8080/petclinic/owners/new. Thread Group (your load) Config Elements Samplers & Post-Processors 1) GET form page (fetch cookies and optional CSRF)…

Step-by-step guide to set up and work with alerts in AppDynamics (the screen you shared is the Alert & Respond → Policies page). 0) How AppDynamics alerts…

Rajesh KumarI’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked…

DataOps Certified Professional (DOCP) Global Certification by DevOpsSchool The DataOps Certified Professional (DOCP) is an internationally recognized certification designed by DevOpsSchool to prove expertise in DataOps principles,…

What is DataOps? DataOps is a set of practices, processes, and technologies that apply DevOps principles to data management—streamlining collaboration between data engineers, analysts, and IT teams….

1. 🔎 What is JWT? Definition Structure 2. 🔎 What is OIDC? Definition Key OIDC Tokens 3. ❓ Why do we need them? JWT OIDC 4. ⚙️…

1. Understanding the Role of Each Resource IngressClassParams A Custom Resource Definition (CRD) used with the AWS Load Balancer Controller. It defines AWS-specific settings for your ALB—like…

In AppDynamics, you correlate data across the App Agent, Machine Agent, and Database Agent by giving the Controller enough shared context to stitch them together. Here’s the…

1) Prerequisites 2) Get your APM endpoint & token/key from Elastic Cloud 3) Download the Elastic APM Java Agent Create a directory for the agent and download…

In GitHub Enterprise, “commands” typically means GitHub CLI (gh) commands and admin-level REST/GraphQL API calls that administrators use to manage organizations, repositories, users, and enterprise settings. Here’s…

here’s an up-to-date, in-depth shortlist of 20 reputable, regulation-aligned SMS/OTP providers with global reach (and strong India support where relevant). “Government recognized” varies by country; in practice…

You want a deep, in-depth tutorial that explains SSL/TLS certificates, their types, domain coverage, paid vs free options, and especially a detailed guide for requesting and issuing…

You can do this directly with Meta’s WhatsApp Business Platform (Cloud API) from your own app/website. Below is a complete, no-BSP, end-to-end checklist you can follow. I’ve…

here’s an up-to-date, Meta-supported shortlist of 20 global WhatsApp Business Solution Providers (BSPs), each with quick “about / pros / cons,” plus a compact pricing-model table. (Meta’s…

The cheapest WhatsApp Business API provider from India in 2026 is WAPI (wapi.in.net), closely followed by BOL7 and WABA Connect, all offering transparent, low-cost plans designed for…

Here’s your end-to-end, no-gaps guide. I’ll keep the vocabulary crisp and the mental model consistent. The layers “KafkaConsumer is NOT thread-safe” — what this actually means Unsafe…

using Laravel Passport—the oauth_access_tokens table balloons when tokens aren’t expiring, not being revoked on logout, or not being purged. Here’s a practical, safe cleanup + prevention plan…

It covers Android SDK, Java (JDK), Flutter, Path wiring, Plugin setup, Validation, AVD/emulator, and creating a project—plus quick fixes. Assumptions: default shell = zsh, Apple Silicon path…

Rajesh KumarI’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked…

Area Sub‑Area Action Items 0) Readiness & Goals SLOs & Metrics Define business SLOs, Core Web Vitals, establish baselines, create dashboards, prepare test data Profiling Enable APM/Tracing,…

Here’s a clear, end-to-end tutorial you can keep handy. It explains what “socket-based” vs “TCP-based” really means, how to tell which one you’re using, and how to…

Here’s a clean, up-to-date, “everything you need” CLI guide you can keep nearby. I’ll cover: I’m using Keycloak 26.x syntax (matches the 26.3.x you’re running). kc.sh —…

To run Keycloak 17+ (Quarkus) with MySQL on the same server (XAMPP/LAMPP). It covers two supported setups. Pick A (TCP) for a production-style config, or B (UNIX…

These tutorials and channels provide a mix of free and paid content, catering to different levels of expertise and covering the entire spectrum of DevOps tools and…

DevOps adoption improves IT and developer collaboration leading to faster delivery. Organizations use this strategy to improve software security, resolve issues quickly, and reduce errors. You need…

I’ll cover Apache Kafka core terms, Confluent Platform extensions, and Confluent Cloud additions. Kafka & Confluent Terminology – Complete Glossary 🔹 Core Kafka Concepts 🔹 Kafka Internals…

To train a machine learning or AI model, the hardware requirements depend heavily on the type of model, the dataset size, and whether you’re doing training from…

The file .github/CODEOWNERS is a special configuration file used by GitHub to define who is responsible for different parts of a repository’s codebase. Here’s a breakdown: 📌…

5 Days Program Advanced performance engineering in .NET: Category Tool(s) Why it’s the best (quick note) Code Profiling & Debugging Visual Studio Profiler, JetBrains dotTrace Deep CLR…