CodeBehind vs Koa
When comparing CodeBehind vs Koa, the Slant community recommends Koa for most people. In the question“What are the best backend web frameworks?” Koa is ranked 33rd while CodeBehind is ranked 36th. The most important reason people chose Koa is:
Using generators (a bleeding edge feature, even for Node.js) would clean up your code from the mess caused by all those callbacks; making your code more manageable.
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Pros
Pro Modern
CodeBehind is a modern framework with revolutionary ideas.
Pro Code-Behind
Code-Behind pattern will be fully respected.
Pro Under .NET Core
Your project will still be under ASP.NET Core and you will benefit from all the benefits of .NET Core.
Pro Get output
You can call the output of the aspx page in another aspx page and modify its output.
Pro Modular
It is modular. Just copy the new project files, including dll and aspx, into the current active project.
Pro Simple
Developing with CodeBehind is very simple. You can use mvc pattern or model-view or controller-view or only view.
Pro Fast
The CodeBehind framework is faster than the default structure of cshtml pages in ASP.NET Core.
Pro Generator support from ground up
Using generators (a bleeding edge feature, even for Node.js) would clean up your code from the mess caused by all those callbacks; making your code more manageable.
Pro Extremely lightweight
Koa is very lightweight with just 550 lines of code.
Pro async/await keywords are supported and has transcended beyond generator functions
Generators functions are of course a huge plus, but at the time Koa team has transcended generations functions and shifted towards async/await style programming. It has made the Koa best framework available in the market.
Pro Development team has a proven track record
Koa is developed by the team behind a widely used node.js framework (express.js).
Pro Built for ES6
Cons
Con Community is relatively small
Con Not compatible with express style middleware
Koa uses generators which are not compatible with any other type of Node.js framework middleware.