1 files changed, 8 insertions, 17 deletions
diff --git a/guides/source/rails_on_rack.md b/guides/source/rails_on_rack.md
index 3b61d65df5..ed935e1008 100644
--- a/guides/source/rails_on_rack.md
+++ b/guides/source/rails_on_rack.md
@@ -64,7 +64,7 @@ To use `rackup` instead of Rails' `rails server`, you can put the following insi
 
 ```ruby
 # Rails.root/config.ru
-require ::File.expand_path('../config/environment', __FILE__)
+require_relative 'config/environment'
 run Rails.application
 ```
 
@@ -93,7 +93,7 @@ NOTE: `ActionDispatch::MiddlewareStack` is Rails equivalent of `Rack::Builder`,
 
 ### Inspecting Middleware Stack
 
-Rails has a handy rake task for inspecting the middleware stack in use:
+Rails has a handy task for inspecting the middleware stack in use:
 
 ```bash
 $ bin/rails middleware
@@ -104,20 +104,19 @@ For a freshly generated Rails application, this might produce something like:
 ```ruby
 use Rack::Sendfile
 use ActionDispatch::Static
-use ActionDispatch::LoadInterlock
-use #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x000000029a0838>
+use ActionDispatch::Executor
+use ActiveSupport::Cache::Strategy::LocalCache::Middleware
 use Rack::Runtime
 use Rack::MethodOverride
 use ActionDispatch::RequestId
 use Rails::Rack::Logger
 use ActionDispatch::ShowExceptions
+use WebConsole::Middleware
 use ActionDispatch::DebugExceptions
 use ActionDispatch::RemoteIp
 use ActionDispatch::Reloader
 use ActionDispatch::Callbacks
 use ActiveRecord::Migration::CheckPending
-use ActiveRecord::ConnectionAdapters::ConnectionManagement
-use ActiveRecord::QueryCache
 use ActionDispatch::Cookies
 use ActionDispatch::Session::CookieStore
 use ActionDispatch::Flash
@@ -149,9 +148,9 @@ You can add a new middleware to the middleware stack using any of the following
 # Push Rack::BounceFavicon at the bottom
 config.middleware.use Rack::BounceFavicon
 
-# Add Lifo::Cache after ActiveRecord::QueryCache.
+# Add Lifo::Cache after ActionDispatch::Executor.
 # Pass { page_cache: false } argument to Lifo::Cache.
-config.middleware.insert_after ActiveRecord::QueryCache, Lifo::Cache, page_cache: false
+config.middleware.insert_after ActionDispatch::Executor, Lifo::Cache, page_cache: false
 ```
 
 #### Swapping a Middleware
@@ -219,7 +218,7 @@ Much of Action Controller's functionality is implemented as Middlewares. The fol
 
 * Sets `env["rack.multithread"]` flag to `false` and wraps the application within a Mutex.
 
-**`ActionDispatch::LoadInterlock`**
+**`ActionDispatch::Executor`**
 
 * Used for thread safe code reloading during development.
 
@@ -267,14 +266,6 @@ Much of Action Controller's functionality is implemented as Middlewares. The fol
 
 * Checks pending migrations and raises `ActiveRecord::PendingMigrationError` if any migrations are pending.
 
-**`ActiveRecord::ConnectionAdapters::ConnectionManagement`**
-
-* Cleans active connections after each request, unless the `rack.test` key in the request environment is set to `true`.
-
-**`ActiveRecord::QueryCache`**
-
-* Enables the Active Record query cache.
-
 **`ActionDispatch::Cookies`**
 
 * Sets cookies for the request.