Laravel is a very popular PHP development framework. Its elegant syntax and powerful functions make it widely favored in the field of web development. In Laravel, routing is a very important concept, which is responsible for mapping HTTP requests to the corresponding controller processing functions. In practical applications, we sometimes need to turn off Laravel's route caching function. This article will explain how to turn off route caching in Laravel.

Why do you need to turn off routing cache?

Laravel provides a route caching function, which can cache the application's routing information in the file system. The advantage of this is that it can speed up route matching and improve the response speed of applications. However, in some cases, we may need to turn off route caching. The following lists several situations where the route caching function must be turned off:

1. Closure functions are used in route definitions

In Laravel, closure functions are often used to define dynamic Route, as shown below:

Route::get('user/{id}', function ($id) {
    return 'User '.$id;
});

However, because the closure function cannot be serialized, it cannot be cached. In this case, the application will throw an error if route caching is enabled.

2. The application uses dynamic routing prefix

When the Laravel application uses dynamic routing prefix, for example:

Route::prefix('api/{version}')->group(function () {
    Route::get('users', function ($version) {
        return "API Version ".$version;
    });
});

At this time, the route of each request The prefixes are all dynamic, which means routing information cannot be pre-cached when the application starts. Therefore, if route caching is enabled, the application will throw an error.

3. Changes in route definition

When the application's route definition changes, such as adding a new route or modifying an existing route, if the route cache is turned on , these changes will not be reflected in the route cache, causing unpredictable errors in the application.

In the above situation, in order to ensure the normal operation of the application, we need to turn off Laravel's route caching function.

How to turn off routing cache?

In Laravel, turning off the route cache is very simple. You only need to perform the following two steps:

1. Delete the route cache file

Laravel's route cache The file is stored in the bootstrap/cache/routes.php file, so we can turn off route caching by deleting that file. You can use the following command to delete the routing cache file:

$ php artisan route:clear

After executing the above command, Laravel will automatically delete the bootstrap/cache/routes.php file.

2. Disable route cache

In addition to deleting the route cache file, we also need to add the following configuration code to the Laravel configuration file to disable the route cache:

// config/app.php

return [

    // ...
    
    'route_cache' => false,

    // ...

];

In the above configuration code, we set the value of the route_cache option to false. Doing this ensures that Laravel does not load route cache files on startup.

After the above two steps are completed, the route cache function will be turned off. When you need to re-enable the route cache function, you only need to set the route_cache option in the config/app.php configuration file to true.

Summary

Laravel's route caching function can improve the response speed of the application, but in some cases this function needs to be turned off. This article introduces how to turn off the route cache function in Laravel, including deleting the route cache file and disabling the route cache function. I hope this article will be helpful to the use of Laravel routing.

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