Notes on Azure, .NET and software architecture.

Sep 21, 2026 · 12 min read

Connect AKS to Azure Container Registry and Fix ImagePullBackOff

Let Azure Kubernetes Service pull images from Azure Container Registry without passwords using attach-acr and the kubelet identity, then work through ImagePullBackOff systematically: authentication, missing tags, platform mismatches, private endpoints, DNS and firewall rules.

Sep 17, 2026 · 12 min read

ACR Tasks: Build Container Images in the Cloud Without Docker

Use ACR Tasks to build and push container images inside Azure without a local Docker daemon. Covers az acr build, git commit and base image triggers, scheduled tasks, multi-step YAML, run logs, managed identities, and when to prefer GitHub Actions instead.

All articles

Sep 18, 2026 · 8 min read

Managed Identities in Azure: Stop Storing Secrets

A practical guide to replacing connection strings and client secrets with Azure managed identities: system-assigned vs user-assigned, RBAC role assignments, DefaultAzureCredential in .NET, Azure SQL access, CI/CD federation, and the pitfalls that show up in production.

Sep 14, 2026 · 11 min read

Clean Up Azure Container Registry: Retention Policies and az acr purge

A practical guide to shrinking an Azure Container Registry safely: measure usage, find untagged manifests and stale tags, enable the retention policy, run and schedule az acr purge, and lock the images you must never lose.

System Design

Designing a Rate Limiter: Token Bucket, Sliding Window and Redis

A practical design guide to rate limiting: fixed window, sliding log, sliding window counter and token bucket compared, with atomic Redis Lua implementations, a TypeScript middleware, response headers, failure modes and the trade-offs that matter in distributed systems.

Sep 11, 2026 · 10 min read

Sep 10, 2026 · 12 min read

Deploy a Container from ACR to Azure Container Apps

Step-by-step guide to running an image from Azure Container Registry on Azure Container Apps: managed identity pulls, ingress, secrets, scaling rules, revisions with traffic splitting, CI updates, logs, and a production-ready ASP.NET Core container with health probes.

Sep 7, 2026 · 12 min read

Securing Azure Container Registry: Private Endpoints, RBAC and Image Scanning

A hands-on hardening guide for Azure Container Registry: replace the admin user with Entra ID and least-privilege roles, lock down network access with private endpoints, scan images with Defender for Containers, sign images, and audit logins and pushes.

Building a Serverless API with AWS Lambda and API Gateway

A practical walkthrough of building a serverless HTTP API with AWS Lambda, API Gateway and DynamoDB using the AWS CDK in TypeScript, covering handler design, authentication, CORS, throttling, observability and the production pitfalls worth knowing up front.

Sep 4, 2026 · 9 min read

Aug 27, 2026 · 8 min read

Reliable Messaging with Azure Service Bus and .NET

How to build reliable message-driven .NET services on Azure Service Bus: queues vs topics, peek-lock settlement, retries and dead-lettering, duplicate detection, sessions for ordering, idempotent consumers, and the configuration choices that matter in production.

Hosting a Static Site on AWS with S3 and CloudFront

How to host a static site or single-page app on AWS with a private S3 bucket and CloudFront using Origin Access Control, a custom domain, HTTPS, sensible caching headers, SPA routing and a repeatable deployment pipeline built with the AWS CDK.

Aug 6, 2026 · 8 min read

Jul 30, 2026 · 8 min read

Azure Front Door vs Application Gateway: Choosing Your Entry Point

A practical comparison of Azure Front Door and Application Gateway for web workloads: global edge vs regional VNet load balancing, WAF, TLS, routing and caching, when to combine them, how to lock down origins, and what .NET apps must handle behind a proxy.

System Design

Caching Strategies for Scalable Systems

A practical look at caching in system design: where to cache, cache-aside vs read-through vs write-through vs write-behind, TTLs and invalidation, cache stampedes, multi-level caching with HybridCache and Redis in .NET, and how to measure whether a cache actually helps.

Jul 9, 2026 · 8 min read

Jun 25, 2026 · 9 min read

SQS vs SNS vs EventBridge: Choosing AWS Messaging

A practical comparison of Amazon SQS, SNS and EventBridge: what each service is designed for, how delivery, ordering, filtering and retries differ, and how to combine them into reliable event-driven architectures with CDK and Node.js examples.

Jun 11, 2026 · 7 min read

Orchestrating Workflows with Azure Durable Functions

A hands-on guide to Azure Durable Functions in the .NET isolated worker model: orchestrators, activities, fan-out/fan-in, retries, timers, human approval with external events, determinism rules, storage backends, and the operational practices that keep long-running workflows healthy.

May 14, 2026 · 8 min read

AWS IAM in Practice: Least Privilege Without the Pain

A practical guide to applying least privilege in AWS IAM: how policy evaluation works, using roles instead of long-lived keys, scoping with conditions, CDK grants, GitHub Actions OIDC, permission boundaries and the tooling that keeps policies tight over time.

Mastering Azure CLI: A Complete Reference Guide

Azure CLI is a powerful cross-platform command-line tool for managing Azure resources. This guide covers installation, authentication, core commands, scripting, CI/CD integration, and best practices for efficient cloud management.

Azure Computer Vision: Analyzing Images with AI

Azure Computer Vision is an AI service for extracting rich insights from images—tags, objects, captions, OCR text, and more. This guide covers capabilities, code examples in Python and C#, use cases, and best practices.

Getting Started with Azure OpenAI Service

Azure OpenAI Service delivers GPT-4o, GPT-3.5-Turbo, DALL·E, and Whisper models via secure Azure infrastructure. This guide covers setup, chat completions, embeddings, RAG patterns, function calling, and best practices.

Building Intelligent Search with Azure AI Search

Azure AI Search is a fully managed search service supporting full-text, vector, hybrid, and semantic search. This guide covers index creation, querying, AI enrichment, RAG pipelines, and best practices.

Getting Started with Azure Translator

Azure Translator is a neural machine translation service supporting 100+ languages. This guide covers text translation, document translation, language detection, transliteration, custom models, and best practices.

Getting Started with Azure Kubernetes Service (AKS)

Azure Kubernetes Service (AKS) is a managed Kubernetes platform for deploying, managing, and scaling containerized applications. This guide covers features, setup, and best practices.

Introduction to Azure Container Registry

Azure Container Registry is a secure and scalable solution for storing and managing container images. This guide covers its features, setup, integration, and best practices.

Getting Started with Azure Application Insights

Azure Application Insights is a robust APM tool for monitoring application performance, diagnosing issues, and analyzing user behavior. This guide covers setup, features, and best practices.

Azure Blob Storage: A Complete Guide with CDN Integration

Azure Blob Storage is a scalable object storage solution for unstructured data. Combined with Azure CDN, it delivers low-latency, high-performance content worldwide.

Comprehensive Guide to Virtual Machines on Microsoft Azure

Azure Virtual Machines provide flexible and scalable solutions for a variety of workloads. This guide covers their features, use cases, setup, management, and best practices.

Dec 17, 2024 · 3 min read

Introduction to Microsoft Azure

Microsoft Azure is a cloud computing platform offering services for virtual machines, databases, storage, and AI. This article explores Azure's features, use cases, and best practices for maximizing its potential.

Jul 22, 2024 · 6 min read

Builder Design Pattern

The Builder Design Pattern provides a way to construct complex objects step-by-step. This article explores its implementation, advantages, use cases, and best practices for effective usage.

Jul 22, 2024 · 6 min read

Factory Method Pattern

The Factory Method Pattern provides an interface for creating objects but allows subclasses to alter the type of objects that will be created. This article explores its implementation, advantages, use cases, and best practices for effective usage.

Jul 22, 2024 · 5 min read

Singleton Pattern

The Singleton Pattern ensures that a class has only one instance and provides a global point of access to it. This article explores its implementation, benefits, use cases, and best practices for effective usage.

Clean Code: Principles and Practices

Clean Code focuses on writing code that is readable, maintainable, and free of unnecessary complexity. Learn about principles such as meaningful naming, single responsibility, and best practices for writing clean code.

Jul 20, 2024 · 5 min read

Unit Testing in .NET: A Comprehensive Guide

Unit testing in .NET ensures code quality by verifying individual units of code. Explore frameworks like xUnit, NUnit, and MSTest, and learn best practices for effective unit testing.

Event Sourcing: Understanding the Basics

Explore Event Sourcing, a pattern that stores application state as a sequence of events, providing benefits like auditability, state reconstruction, and scalability, along with its challenges and implementation examples.

Jul 20, 2024 · 2 min read

CQRS vs MediatR in .NET

A comparison of CQRS and MediatR patterns in .NET, including their benefits and usage examples.

Jul 20, 2024 · 6 min read

Domain-Driven Design (DDD) Essentials

An overview of Domain-Driven Design (DDD), including its core concepts, implementation strategies, benefits, and real-world applications for software development.

Jul 20, 2024 · 8 min read

Understanding Clean Architecture

An overview of Clean Architecture, its principles, and benefits for building maintainable software.

Building Microservices with .NET

Guide on building microservices with .NET, including basic concepts and practical examples.

Introduction to RabbitMQ and Basic Usage

Learn what RabbitMQ is, its core concepts, how to install it, and how to create queues and publish and consume messages from C# with working code examples.