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Proper Session/DbContext lifecycle management

Most “heavy” object-relational mappers (ORMs) have an interface that provides more than just easy querying of the database. They also are implementations of two key patterns: Unit of Work Identity Map For NHibernate, this is the ISession interface, and for … Continue reading 

Posted in Architecture, Patterns | 34 Comments

Put your controllers on a diet: POSTs and commands

Previous posts in this series: Redux Defactoring A survey GETs and queries In the last post, we looked at encapsulating the interesting part of GET actions (taking request parameters and building a model) into individual encapsulated query objects and handlers. … Continue reading 

Posted in Architecture, ASP.NET MVC, Patterns | 30 Comments

Null collections/arrays from MVC model binding

I’m firmly in the camp of the Framework Design Guidelines guidance on collection properties and return values: DO NOT return null values from collection properties or from methods returning collections. Return an empty collection or an empty array instead It … Continue reading 

Posted in ASP.NET MVC | 30 Comments

Put your controllers on a diet: GETs and queries

Previous posts in this series: Redux Defactoring A survey In the last post, we surveyed the field to determine the path forward. Looking at our controller (and others), our controllers aren’t too messy, but they’re well on their way. On … Continue reading 

Posted in Architecture, ASP.NET MVC, Design | 63 Comments

Put your controllers on a diet: a survey

Previous posts in this series: Redux Defactoring In the last post, I removed all the abstractions and layers from my application in order to provide a better view on what my next steps should be. This is like climbing to … Continue reading 

Posted in Architecture, ASP.NET MVC, Design | 9 Comments

Put your controllers on a diet: defactoring

Posts in this series: Redux Defactoring Before getting to far in refactoring my controller, I want to spend a little bit of time doing some defactoring, removing abstractions and such until I can see the entire amount of non-framework code … Continue reading 

Posted in ASP.NET MVC | 34 Comments

Put your controllers on a diet: redux

A few years back, I put together a talk on putting your controllers on a diet using  variety of techniques and extension points inside MVC. Well, a lot has changed in four years, and with the lessons learned from the … Continue reading 

Posted in ASP.NET MVC | 8 Comments

Evolutionary architecture boundaries

At Headspring, we’re fairly obstinate in our approach in evolving a system’s design and architecture over time. As a consulting company, we get to see a LOT of different codebases, and while it may be selection bias, we are generally … Continue reading 

Posted in Architecture, Design | 3 Comments

Scaling lessons learned–from 0 to 15 million users

The bulk of my time in the last three or so years at Headspring has been building and architecting a loyalty reward system (think Best Buy Reward Zone). I’ve worked on Very Large Systems before, Fortune 50 e-commerce sites, but … Continue reading 

Posted in Architecture | 11 Comments

Curbing long tail design

One of the perks of my job (and talking to a lot of folks) is that I get to see a lot of people’s actual code. Not gists, blog examples, or GitHub playgrounds, but real, actual, production code. Some code … Continue reading 

Posted in Architecture, Design | 21 Comments