Every Rails application comes with a standard set of middleware which it uses in this order in the development environment:
* +Rack::SSL+ Will force every requests to be under HTTPS protocal. Will be available if +config.force_ssl+ is set to _true_.
* +Rack::SSL+ Will force every requests to be under HTTPS protocol. Will be available if +config.force_ssl+ is set to _true_.
* +ActionDispatch::Static+ is used to serve static assets. Disabled if +config.serve_static_assets+ is _true_.
* +Rack::Lock+ Will wrap the app in mutex so it can only be called by a single thread at a time. Only enabled if +config.action_controller.allow_concurrency+ is set to _false_, which it is by default.
* +ActiveSupport::Cache::Strategy::LocalCache+ Serves as a basic memory backed cache. This cache is not thread safe and is intended only for serving as a temporary memory cache for a single thread.
