DocumentIO — Building a Unified API for 7 Document Formats in C#
DocumentIO — Building a Unified API for 7 Document Formats in C This is part of my series on building the VNML Agent Framework — a 100% local agenti…
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Understanding When to Use Factory Method vs. Abstract Factory Design Patterns: Key Differences and Use Cases
Introduction to Design Patterns: Factory Method vs. Abstract Factory When diving into the world of design patterns, the Factory Method and Abstract…
Composition Root in Node.js: Dependency Injection Without a DI Framework
Introduction: The Quest for Clean Architecture in Node.js When building backend applications in Node.js, managing dependencies between services, dat…
Recognizing the Unit of Work Pattern in a Simple Multi-Step Save
Some patterns don't announce themselves with an obvious interface or a textbook-matching class name. Sometimes they're just... there, quietly, in co…
Image prompting lessons: stop describing the image, hand the model a reference sheet
Thirteen rounds, one afternoon, one word. The word was ONLINE and I wanted it drawn in a particular chunky cartoon style. I have the whole log becau…
Architectural Patterns - Design Patterns - Idioms
Architectural Patterns Viable software architectures are built according to some overall structuring principle. We describe these principles with ar…
Tired of "new" Everywhere? Learn Factory Method with Laravel
1. Hook & Problem Statement You're building a Laravel application. You need to create a payment processor. So you write: $processor = new Stripe…
Stop Writing Massive if-else Blocks: Master the Strategy Pattern in PHP & Laravel
1. Hook & Problem Statement You're a Laravel developer. You need to build a shipping cost calculator. You start simple. if ($country === 'USA')…
A Scalable ML Framework with Monadic Design
Originally published on wisl.dev . In the world of machine learning, going from research to production is often a painful, time-consuming process. A…
Laravel & Design Patterns — Practice Series: Builder
I was tired of seeing how many articles repeat, again and again, basic examples of using design patterns in development; examples based on shape fig…
MCP Design Patterns: 7 Proven Patterns for Building Scalable AI Systems in Java
MCP Design Patterns: Building Scalable AI-Integrated Systems in Java A comprehensive guide to seven proven architectural patterns for Model Context…
Mastering the Adapter Pattern in Java: Bridging Modern Architectures and Legacy Systems
1. Fundamental Base: The Problem and the Theory 1.1 Introduction The Adapter Pattern (also widely known by its alias, Wrapper ) belongs to the Struc…
Laravel & Design Patterns — Practice Series: Adapter
Welcome back. This is the next article in our practical use of patterns in Laravel, and in this guide, we are going to talk about one of the most po…
The Criteria pattern in NestJS: what a client may ask for is a file, not a signature
The Criteria pattern in NestJS One single way to filter, sort and paginate any list. Five parameters and a find() The example running through this a…
The Boundary Independence Principle (BIP)
The Boundary Independence Principle (BIP) I've been writing about the SOLID principles for over a decade. I built InversifyJS because of them, I wro…
Design Patterns: Reusable Solutions to Recurring Problems
Design Patterns: Reusable Solutions to Recurring Problems A practical guide to classic design patterns in C#/.NET — Factory, Singleton, Repository,…
Full practical guide on creating production-grade webhook receivers
Throughout my career I have designed and implement tens of webhook handlers from Payments systems and delivery trackers to chat and real time commun…
Understanding CQRS: A Practical Guide to Command Query Responsibility Segregation
When you're building an application that needs to handle complex business logic, scale to millions of users, or maintain separation of concerns, you…
Prototype & Factory Method Design Patterns in Java - ClauseGuard
Introduction When ClauseGuard processes an uploaded contract, two problems appear immediately at scale. First, it needs to pick the right document p…
The Decorator Pattern in Java: Adding Behavior Without Breaking Everything
Decorator Design Pattern in Java: Add Features Without Changing Existing Code Introduction When developing Java applications, you may need to add ne…
Why Your LLM Calls Need a Circuit Breaker: A Lesson from Last Party 🔌
Carnival time has begun. 🎉 We are organizing a house party, and if you are in and around Bangalore, you are invited. Just one condition: Don't be la…
Important Design Patterns in a Nutshell
When building complex software systems, writing code that simply "works" is not enough. As systems scale and requirements evolve, poorly structured…
Simple Factory, Factory Method, Abstract Factory — Which One Do You Need?
The Problem You're building a system that supports multiple databases — MySQL, PostgreSQL, MongoDB. Different services in your application need to c…
Never Create an Invalid Object Again — The Builder Pattern
A real story from building a manuscript submission system at a scientific publishing company. We were building a system at a Publishing Company that…
The Ideal Cart: 5 Design Patterns That Earn Their Keep (and 2 Refused)
It all starts with a review question. I was reworking my notes on the Design Patterns book , the Gang of Four one, with examples that all came from…
Stop Editing Working Code: Understanding the Open/Closed Principle in Python
Every time a new requirement arrives, do you find yourself opening the same function and adding another elif block? If yes, your code may be signali…
The Factory Pattern: Simplified
The Problem You're building a system that supports multiple databases — MySQL, PostgreSQL, MongoDB. Different services in your application need to c…
Making ServiceLoader usable: a provider factory
I keep coming back to java.util.ServiceLoader . I have used it to put a JSON layer behind a contract, so the core code carries no direct dependency…
Environments Are Not Features
I wanted a sandbox. Not the decorative kind. Not the one where production data wears a fake name tag and hopes nobody notices. A real sandbox. One w…
Design Patterns in Ruby #2: Observer Pattern
Applications often need to react when something changes. When a user signs up, you might want to: Send a welcome email Create a user profile Log the…