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docs: clarify route_layer does not apply middleware to the fallback handler #3567

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Nov 21, 2025
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docs: clarify route_layer does not apply middleware to the fallback handler #3567

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3 changes: 1 addition & 2 deletions axum/src/docs/method_routing/route_layer.md
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Original file line number Diff line number Diff line change
@@ -1,8 +1,7 @@
Apply a [`tower::Layer`] to the router that will only run if the request matches
a route.

Note that the middleware is only applied to existing routes. So you have to
first add your routes (and / or fallback) and then call `route_layer`
Note that the middleware is only applied to existing routes. First add your routes and then call `route_layer`
afterwards. Additional routes added after `route_layer` is called will not have
the middleware added.

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