ExpressJS vs actionhero.js: What are the differences?

# Introduction
In this comparison, we will explore the key differences between ExpressJS and actionhero.js.

1. **Routing System**: ExpressJS provides a simple and easy-to-use routing system where developers can define routes using HTTP methods. On the other hand, actionhero.js offers a more robust routing system that includes support for versioned APIs, automatic parameter validation, and route specific details.

2. **Built-in Features**: ExpressJS is a minimalist web framework that requires developers to choose and integrate third-party libraries for additional features like authentication, validation, and ORM. In contrast, actionhero.js comes with built-in support for features such as caching, logging, authentication, and task scheduling, reducing the need for external dependencies.

3. **Real-time Capabilities**: ExpressJS is primarily designed for building traditional web applications and APIs, lacking built-in support for real-time features like websockets. On the other hand, actionhero.js is designed with real-time capabilities in mind, providing native support for websockets, chat rooms, and other real-time functionalities.

4. **Structure and Organization**: ExpressJS follows a more traditional MVC structure where developers have to explicitly organize their code into controllers, models, and views. In comparison, actionhero.js follows a more opinionated architecture that promotes code organization through actions, tasks, and initializers, offering a more standardized approach to project structure.

5. **Scalability and Performance**: ExpressJS is known for its lightweight nature and high performance, making it suitable for smaller applications with low to moderate traffic. On the other hand, actionhero.js is optimized for scalability and performance, offering features like distributed pub/sub messaging, cluster support, and horizontal scaling capabilities out of the box.

6. **Extensibility and Customization**: While both frameworks are highly extensible, ExpressJS provides greater flexibility for developers to customize and extend the framework according to their specific needs. In contrast, actionhero.js offers a more opinionated and structured approach to customization, leveraging plugins and extensions to add functionalities in a standardized manner.

In Summary, ExpressJS and actionhero.js differ in their routing system, built-in features, real-time capabilities, structure and organization, scalability and performance, as well as extensibility and customization options.