在 Laravel 中缓存图像的最有效方法

Question

I am developing a Laravel application in which I need to display images from Instagram's CDN and thought it would be a good idea to cache these instead of constantly having to query the CDN.

I found Intervention Image Cache as the only option for my requirements. I wrote a simple route that involved passing part of the CDN url and then calling a controller to cache the image. I must mention I'm using FileSystem storage as the cache driver.

routes/web.php

Route::get('/img/{code}/', 'PostController@setImageCached');

app/Http/Controllers/PostController.php

public function setImageCached($code) {
        $cdn_image = $this->getImage($code);
        $img = Image::cache(function($img) use($cdn_image){
            return $img->make($cdn_image);
        }, 10);
        return Response::make($img, 200, array('Content-Type' => 'image/jpeg'));
    }

And whilst it works, it's painfully slow, almost three times slower than actually getting the image directly from the CDN, so either I'm using the library wrong or it's not caching the images.

Is there a better approach to caching images from a CDN so that my application does not have to constantly query Instagram's CDN?

Answer 1

You could try the built-in Laravel caching mechanism. Not sure how the library you're using works so this may be a more reliable approach.

public function setImageCached($code) {
        $cdn_image = $this->getImage($code);
        $img = Cache::remember('image_'.$cdn_image, 10, function () use ($cdn_image) {  
           return file_get_contents($cdn_image);
        });
        return Response::make($img, 200, array('Content-Type' => 'image/jpeg'));
    }