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-rw-r--r--guides/source/api_app.md4
1 files changed, 0 insertions, 4 deletions
diff --git a/guides/source/api_app.md b/guides/source/api_app.md
index 92ef71aa0d..38ccfdd1b8 100644
--- a/guides/source/api_app.md
+++ b/guides/source/api_app.md
@@ -192,7 +192,6 @@ An API application comes with the following middleware by default:
- `Rack::Sendfile`
- `ActionDispatch::Static`
-- `Rack::Lock`
- `ActiveSupport::Cache::Strategy::LocalCache::Middleware`
- `ActionDispatch::RequestId`
- `Rails::Rack::Logger`
@@ -296,9 +295,6 @@ config.action_dispatch.x_sendfile_header = "X-Accel-Redirect"
Make sure to configure your server to support these options following the
instructions in the `Rack::Sendfile` documentation.
-NOTE: The `Rack::Sendfile` middleware is always outside of the `Rack::Lock`
-mutex, even in single-threaded applications.
-
### Using ActionDispatch::Request
`ActionDispatch::Request#params` will take parameters from the client in the JSON