Archives – Sujith Quintelier | Azure, DevOps & GitHub - 1

2025 (37)

October (6)

Testing & debugging async: proper async unit tests, mocking, handling aggregated exceptions, tooling (tasks window, async stacks), and tracing flows. Mastering Asynchronous Programming with C# async/await - Part 7: Testing & Debugging

Advanced async topics: ValueTask trade-offs, custom awaiters, concurrency control with SemaphoreSlim, channels pipelines, and tuning performance. Mastering Asynchronous Programming with C# async/await - Part 6: Advanced Topics

Real-world async use cases: HttpClient APIs, file IO, EF Core queries, responsive UI handlers, and background hosted services. Mastering Asynchronous Programming with C# async/await - Part 5: Real-World Use Cases

Async patterns in CSharp: parallel fan-out, cancellation, async streams, timeouts and retries for resilient asynchronous workflows. Mastering Asynchronous Programming with C# async/await - Part 4: Patterns with Async

Master GitHub Advanced Security with this comprehensive GH-500 certification guide. Complete study plan, hands-on security labs, and real-world examples. 🔒 GitHub Advanced Security Certification Guide (GH-500) - Complete Prep

Async pitfalls in CSharp: avoiding async void, blocking waits, deadlocks, context capture issues, and robust exception handling patterns. Mastering Asynchronous Programming with C# async/await - Part 3: Common Pitfalls and Best Practices

September (6)

Comprehensive guide to preventing Dependabot's 90-day pause at scale using GitHub Actions. Includes monitoring, prevention, and automation workflows for enterprise organizations. 🤖 Automating Dependabot at Scale: GitHub Actions Strategy

Deep dive into CSharp async/await: method anatomy, return types (Task, Task<T>, void), real meaning of await, and sequential vs parallel execution. Mastering Asynchronous Programming with C# async/await - Part 2: Deep Dive

A practical guide on when to use GitHub Models, Azure AI Foundry, and OpenAI. Covers both developer and enterprise perspectives, with comparisons and recommendations for prototyping, production, and innovation. 🤖 When to Use GitHub Models, Azure AI Foundry, and OpenAI

Seven-part CSharp async/await series: fundamentals, pitfalls, patterns, performance, advanced topics, and testing strategies. Mastering Asynchronous Programming with C# async/await

Async/await fundamentals in CSharp: why async matters, blocking vs non-blocking, first await example, state machine basics, and parallel HTTP calls. Mastering Asynchronous Programming with C# async/await - Part 1: Introduction

Learn how to configure Dependabot groups for NuGet, npm, and GitHub Actions to avoid merge conflicts and reduce PR noise. Taming Dependabot: Bundle NuGet, npm, and GitHub Actions Updates Without Merge Conflicts

August (11)

Master GitHub Copilot (GH-300) certification with AI-powered development, prompt engineering, and enterprise productivity optimization guide. 🤖 GitHub Copilot Certification Guide (GH-300) - AI Development Mastery

Enable Dependabot alerts and updates, add dependabot.yml, and tune it for npm, Actions, Docker, and Java (Maven/Gradle). Getting started with Dependabot

Guide to the Platform Engineering Certified Practitioner course: learn golden paths, MVPs, abstractions, and how to sell your platform. Platform Engineering Course Guide 🚀

Master GitHub Actions automation with this comprehensive GH-200 certification guide. Complete study plan, hands-on labs, and real-world examples. 🚀 GitHub Actions Certification Guide (GH-200) - Complete Prep

Master GitHub Enterprise Administration (GH-100) certification with comprehensive enterprise governance, user management, and security preparation. 🏢 GitHub Administration Certification Guide (GH-100) - Enterprise Mastery

Deep dive into a PowerShell + GitHub Actions pipeline that auto-generates weekly Azure, GitHub and Terraform update posts with AI summarisation. ⚙️ Automated Updates Pipeline

Use GitHub Models to summarise failed Actions runs, open an issue with next steps, and optionally assign it to the Copilot coding agent. Auto-triage CI failures with Copilot

Master GitHub Foundations (GH-900) certification with comprehensive coverage of Git basics, collaboration workflows, and security fundamentals. 🐙 GitHub Certification Journey: Part 1 - GitHub Foundations (GH-900)

Build a privacy-first AI energy assistant using C#, local GPT-OSS models, RAG, and tool calling. Analyse solar, gas, and weather data completely offline. ⚡ Local Energy Assistant: C# + GPT-OSS + RAG

Master Terraform state management with Azure remote backends. Learn state locking, team collaboration, and secure, scalable infrastructure practices. 🖥️ Zero to Hero: Terraform for Azure•Part 2

Explore .NET 9’s performance leap for Azure: smarter JIT, leaner containers, and cloud-native tweaks that make apps faster and cut compute costs. 🚀 .NET 9 Performance in Azure: A Deep Technical Dive

July (1)

A practical guide to customizing GitHub Copilot in VS Code: repository instructions, file-specific rules, reusable prompts, and custom chat modes. 🛠️ GitHub Copilot: Custom Instructions, Prompts & Chats

June (1)

Learn what Azure Service Groups are, how they enhance Azure governance, which RBAC roles are supported, and how to create them using REST API. Azure Service Groups: Benefits, RBAC, and API Guide

April (3)

Discover the best AI models to use with GitHub Copilot for various programming tasks. Updated August 2025 to include GPT-5 and note the deprecation of GPT-4o. Which AI Model Should You Use with GitHub Copilot?

Learn about AKS networking models including Azure CNI, Overlay, Kubenet, and Cilium, plus recent updates and best practices for configuration. 🌐 AKS Networking Demystified: Models & Best Practices

Explore GitHub Copilot Agent Mode in VS Code—an AI assistant that autonomously writes, edits, tests, and runs code, acting like a real pair programmer. 🤖 GitHub Copilot Agent: Your AI Pair Programmer

March (7)

Learn how federated credentials enhance security and simplify authentication in GitHub Actions and Azure DevOps by eliminating stored secrets in pipelines. 📘 Secure Azure CI/CD with Federated Credentials

Stay current on Azure changes as Kubenet in AKS and Azure Spring Apps retires. Get timelines, migration steps, and required actions to stay compliant. 🔄 Azure updates for March 18, 2025

Explore new GitHub features like HTML side-panel editing, Mermaid diagram support, enhanced issue management, and better streaming and attachment previews. 🔄 GitHub updates for March 18, 2025

A deep dive into GitHub Copilot, its features, benefits, limitations, and best practices for maximizing its potential in software development. 🚀 GitHub Copilot: The AI-Powered Coding Assistant

A detailed comparison of Azure Bicep and Terraform, covering their features, use cases, and which one is better suited for your Infrastructure as Code needs. ⚖️ Azure Bicep vs Terraform: What Should You Choose?

GitHub is now PCI DSS v4.0 compliant. GitHub Actions Performance Metrics are GA, with insights at repo/org levels and Enterprise metrics in public preview. 🔄 GitHub updates for March 14, 2025

Kickstart your Terraform journey on Azure. Learn the basics and lay the groundwork for automating your cloud infrastructure in this first part of the series. 🖥️ Zero to Hero: Terraform for Azure•Part 1

February (1)

Explore the concept of identities in Azure, including user and service identities, and learn how to manage and secure them effectively. 🔒 Securing Azure Identities

January (1)

A step-by-step guide on how to identify and retrieve stale branches in your GitHub organization. Keep your repository clean and organized. 🚀 Find Stale Branches Across All GitHub Repos

2023 (1)

March (1)

Understand the concepts of Azure storage redundancy, data availability, and durability. Learn how to ensure your data is safe and accessible at all times. 🔹 Azure Storage Redundancy: Availability & Durability

2022 (2)

June (2)

Explore Azure load balancing options and optimize traffic distribution for scalable, high-performance, and highly available cloud applications. Azure Load Balancing: Choose the Right Option

Discover key highlights and essential tips for preparing for the AZ-700 certification exam. Enhance your knowledge and boost your chances of success. 📘 AZ-700 Prep Highlights