在 Laravel 中使用 Redis 缓存图像？

Question

I'm currently using Redis to serve cached content in my Laravel application. I've noticed using it with the Cache Facade is slower than with native Redis commands and other people have noticed too . I'd like to replace this snippet with one that implements the Redis facade.

public function setImageCached(Request $request)
{
    $img = Cache::remember('image_'.$request->url, 6000, function () use ($request) {
        return file_get_contents($request->url);
    });
    
    return Response::make($img, 200, array('Content-Type' => 'image/jpeg'));
}

Answer 1

Forming this answer off the comments, so question may need to be updated to match.

To use different cache drivers in different contexts, you can define a default cache driver (redis would be best for this) and then use a separate store for files with the following

Cache::store('file')->remember('image_'.$request->url, 6000, function () use ($request) {
        return file_get_contents($request->url);
});

This will use the filesystem driver to cache, well, files, which is a better solution that redis for this use.

One thing to note, as you have also discovered, is that Laravel doesn't clean up expired cache files. There is a package that can handle this for you arifhp86/laravel-clear-expired-cache-file which gives you an artisan command

php artisan cache:clear-expired

You can schedule this to run as often as you wish