Software component re-use in ASP.NET and Django and is it really beneficial?

‌I am an ASP.NET developer for years. In many companies and projects that I worked for there is constant need for re-usable components. Some companies were completely serious about it so based their business on it. When I'm doing software projects on my own management (as project manager or as freelancer) I encounter this subject again.


Realistic or not realistic, it is very favorable if we could use previously developed components in new projects. It would be very time saving specially in repetitive projects. Code re-use exists in different levels of ASP.NET. You can use Html helpers or user controls to share components between projects, you also can use services like logger or authentication in several projects. There is a type of component reuse in ASP.NET that is used by modules like ELMAH that is based on HTTP modules or middle wares. None of them are a component re-use that I need. What I need is a complete set of component re-use. I need all core and UI elements all together. For example in logger example, I need core logic and all needed UI all together in a manner that I can plug into a new application so other components of the application can communicate an integrate with it. I know there is a solution for ASP.NET that is called Area that approximately do what I need. It do its re-use in view (UI) well. I just copy files into its directory. But I it no designed a really separate component. It is forced to be aware of mother application's internal functionality specially on database design. Maybe it is the reason that ASP.NET MVC area is not very popular.


I've read a lot about Django that is re-use friendly by design. I see it is based on apps. Also I see that there is an app sharing web site for it. But never used it in a real project.


By thinking more and more on software re-use (in the context of web development) I realize that not every component re-use is suitable for the application. There is trade-off here. If you want to have a re-usable app then you have to develop it as generic as you can. That itself is causing complexity and creating bug and even consumes more time for development. When you start using a component among several projects you must carefully think of every change you made in the application. Each change must be confirmed as backward compatible as others are using your app. So maintenance would be hard. Apparently this is the reason many web development teams do not employ re-usable components a lot.


There is at least one situation that this model of software re-use makes sense. When you produce a re-usable app for a limited range of projects and limited period of time and when you are intended to use your app only in a family of project, that would better suites. Here it is good that Django applications are developed in this manner by default, whether you wan to re-use it or not.

Selecting a web framework based on reusability and pluggability of components

There are plenty comparison of web frameworks on the Internet. Many of them compare web frameworks in general, some of them compare web frameworks with performance measure. Some are comparing in learning curve, popularity, architecture, speed of development, etc.


But I am interested to focus on reusability and pluggability of components. In a web development team it is good to be able to use previously developed portions of project in new projects. For example many projects have membership or accounting section. They can be developed once and used more than once in different projects. You can even think of ticketing or organizational structure management across different separate web projects. Goal is reduce development effort during development mid level web projects.


Django is introducing itself as to be so, but how about Rails, ASP.NET, MEAN or other common web frameworks?


Django has administrative CRUD interface that can save much time during development. Dhango's moto is “the web framework for perfectionists with deadlines”. Every application in Django is consisted of apps. Each app can implement an independent field of business. Django claims that you can join different apps to to create a complete web application.


Django has good documentations but its learning curve is high. It seems efficient for database based applications.

Django is not fully object oriented. It is not as fast as Node.js but does not force you to build everything from scratch. It also seem to have less batteries than Node.js and Rails. Its job market is even smaller than Rails and ASP.NET.


Rails is opinionated, so many settings and conventions are set by default. Rails developers can learn it faster and develop with more rapidly. It is not very good at performance but have strong community. Rails is popular in Mac users while. It also is easier while deploying as cloud solutions have better support of it. Its rapid development can compete with reusablity feature that Django claims.


Previously I wrote about the subject here, here, here and here.


What is your opinions and experiences?