plug

Plugs are simple, chainable functions that enable flexible middleware pipelines, as demonstrated in the router examples where plugs like Plug.Logger can be inserted seamlessly.

Plug abstracts web server details, allowing the same application to run on Cowboy or Bandit via connection adapters, giving developers flexibility in deployment.

Plug.Router compiles routes into optimized tree lookups in the Erlang VM, ensuring fast request dispatching without linear overhead.

Includes ready-to-use plugs for common tasks like authentication, CSRF protection, and static file serving, reducing boilerplate code.