echo/website/content/guide/migrating.md

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Migrating	side parent weight guide 2

Migrating from v1

Change log

• Echo now uses Engine interface to abstract HTTP server implementation, allowing us to use HTTP servers beyond the standard library. It currently supports standard HTTP server and FastHTTP.
• Context, Request and Response are converted to interfaces. More...
• Moved API's for serving static files into middleware.
  • Echo#Index
  • Echo#Favicon
  • Echo#Static
  • Echo#ServeDir
  • Echo#ServeFile
• Dropped auto wrapping of handler and middleware to enforce compile time check.
• Handler only accepts Echo#Handler interface.
• Middleware only accepts Echo#Middleware interface.
• Echo#HandlerFunc adapter to use of ordinary functions as handlers.
• Echo#MiddlewareFunc adapter to use of ordinary functions as middleware.
• Middleware is run before hitting the router, which doesn't require Echo#Hook API as it can be achieved via middleware.
• Ability to define middleware at route level.

How?