Lumen Route Caching: Expected Middleware Application After Cache Clear

Lumen Route Caching: Expected Middleware Application After Cache Clear

The goal is to confirm that after deleting the cached routes file and allowing Lumen to regenerate the route cache via $router->cacheRoutes(), middleware groups defined in routes/web.php are correctly applied to routes that also use implicit model binding through Route::model().

Uncertainty arises from documented changes between Lumen 2.x and 3.x regarding how route caching interacts with middleware resolution and model binding, making it unclear whether the cached representation preserves the original middleware group assignments.

Does Lumen automatically reapply middleware groups defined in routes/web.php after the route cache is regenerated? Does implicit model binding via Route::model() influence middleware resolution in the cached routes? Are there any version‑specific considerations needed to maintain middleware consistency after clearing the route cache?