Add Rack::TempfileReaper to tests and docs

1 files changed, 5 insertions, 0 deletions

diff --git a/guides/source/rails_on_rack.md b/guides/source/rails_on_rack.md
index 6780e7c0de..1627205b7b 100644
--- a/guides/source/rails_on_rack.md
+++ b/guides/source/rails_on_rack.md
@@ -126,6 +126,7 @@ use ActionDispatch::ContentSecurityPolicy::Middleware
 use Rack::Head
 use Rack::ConditionalGet
 use Rack::ETag
+use Rack::TempfileReaper
 run MyApp::Application.routes
 ```
 
@@ -300,6 +301,10 @@ Much of Action Controller's functionality is implemented as Middlewares. The fol
 
 * Adds ETag header on all String bodies. ETags are used to validate cache.
 
+**`Rack::TempfileReaper`**
+
+* Cleans up tempfiles used to buffer multipart requests.
+
 TIP: It's possible to use any of the above middlewares in your custom Rack stack.
 
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