What are best practices for working with PSGI/Plack?

When working with PSGI/Plack, following best practices can greatly enhance your application's performance, maintainability, and scalability. Here are some key best practices:

• Use Middleware: Take advantage of Plack middleware for functionality like session management, authentication, and logging. This separates concerns and keeps your app clean.
• Environment Configurations: Ensure your application behaves differently based on the environment (development, testing, production). This can be done using environment variables or configuration files.
• Testing: Write tests for your PSGI applications, utilizing frameworks like Test::More or any other testing modules to ensure your code is robust.
• Use Route Dispatching: Use a routing system like Plack::App::Router or Dancer to manage application routes efficiently.
• Proper Response Handling: Make sure your application returns proper HTTP status codes and headers to ensure good client-server interaction.
• Performance Monitoring: Integrate performance monitoring tools to keep track of your application's health in production.