Laravel ADNCache

This package allows you to use ADNcache together with Laravel.

It provides one facade:

• ADNCache facade to handle purging

Installation

Require this package using composer.

composer require darkperis/dpadn-laravel

Laravel uses Auto-Discovery, so you won't have to make any changes to your application, the two middlewares and facade will be available right from the beginning.

Steps for Laravel >=5.1 and <=5.4

The package can be used for Laravel 5.1 to 5.4 as well, however due to lack of Auto-Discovery, a few additional steps have to be performed.

In config/app.php you have to add the following code in your aliases:

'aliases' => [
    ...
    'ADNCache'   => Darkpony\ADNCache\ADNCache::class,
],

Copy adncache.php to config/:

Copy the package config/adncache.php file to your config/ directory.

important: Do not add the ServiceProvider under providers in config/app.php.

Steps for Laravel 5.5 and above

You should publish the package configuration, which allows you to set the defaults for the Cache-Control header:

php artisan vendor:publish --provider="Darkpony\ADNCache\ADNCacheServiceProvider"

Usage

The package comes with 2 functionalities: Setting the cache control headers for adncache and purging.

cache-control

You'll be able to configure defaults in the config/adncache.php file, here you can set the max-age (default_ttl), the cacheability (default_cacheability) such as public, private or no-cache or enable esi (esi) in the Cache-Control response header.

If the default_ttl is set to 0, then we won't return the Cache-Control response header.

You can control the config settings in your .env file as such:

• ADNCACHE_API_KEY - Specify the API Token for your Service at the Edgeport Platform
• ADNCACHE_ENDPOINT - accepts endpoint
• ADNCACHE_ESI_ENABLED - accepts true or false to whether you want ESI enabled or not globally; Default false
• ADNCACHE_DEFAULT_TTL - accepts an integer, this value is in seconds; Default: 0
• ADNCACHE_DEFAULT_CACHEABILITY - accepts a string, you can use values such as private, no-cache, public or no-vary; Default: no-cache
• ADNCACHE_GUEST_ONLY - accepts true or false to decide if the cache should be enabled for guests only; Defaults to false

You set the cache-control header for adncache using a middleware, so we can in our routes do something like this:

Route::get('/', function() {
    return view('frontpage');
})->middleware('cache.headers:public;max_age=2628000;etag');

purge

If we have an admin interface that controls for example a blog, when you publish a new article, you might want to purge the frontpage of the blog so the article appears in the overview.

You'd do this in your controller by doing

<?php

namespace App\Http\Controllers;

use ADNCache;

class BlogController extends BaseController
{
    // Your article logic here

    ADNCache::purge('/');
}

You can also purge everything by doing:

ADNCache::purge('*');
// or
ADNCache::purgeAll();

One or multiple URIs can be purged by using a comma-separated list:

ADNCache::purge('/blog,/about-us,/');
// or
ADNCache::purgeItems(['/blog', '/about-us', '/']);

Laravel Authentication

If you use authentication in Laravel for handling guests and logged-in users, you'll likely want to also separate the cache for people based on this.

This can be done in the .htaccess file simply by using the cache-vary on the Authorization cookie:

RewriteEngine On
RewriteRule .* - [E=Cache-Vary:Authorization]

Note: In the above example we use Authorization, this may have a different name depending on your setup, so it has to be changed accordingly.