The pep pill for your Craft site

Upper speeds up Craft dramatically using a Cache Proxy in front of your webserver.

The Plugin adds the neccessary Cache-Control and XKEY/Surrogate-Key/Cache-Tag headers to your pages. When Entries or Sections get updated in the Control Panel it takes care of the cache invalidation.

If you need an introduction to HTTP Caching, I highly recommend this article.

Supported Cache Drivers

• KeyCDN (CDN/SaaS)
• Fastly (CDN/SaaS)
• Cloudflare (CDN/SaaS)
• Varnish with XKEY support (your own proxy)
• Dummy (does nothing)

Installation

1. Install with Composer via composer require ostark/upper from your project directory
2. Install plugin with this command php craft install/plugin upper or in the Craft CP under Settings > Plugins
3. A new configuration file gets generated automatically in your-project/config/upper.php.

Fastly Setup

UPPER_DRIVER=fastly
FASTLY_API_TOKEN=<REPLACE-ME>
FASTLY_SERVICE_ID=<REPLACE-ME>
FASTLY_DOMAIN=http://<REPLACE-ME>

KeyCDN Setup

UPPER_DRIVER=keycdn
KEYCDN_API_KEY=<REPLACE-ME>
KEYCDN_ZONE_URL=<REPLACE-ME>.kxcdn.com
KEYCDN_ZONE_ID=<REPLACE-ME>

Cloudflare Setup

UPPER_DRIVER=cloudflare
CLOUDFLARE_API_KEY=<REPLACE-ME>
CLOUDFLARE_API_EMAIL=<REPLACE-ME>
CLOUDFLARE_ZONE_ID=<REPLACE-ME>
CLOUDFLARE_DOMAIN=https://<REPLACE-ME>

By default, Cloudflare's CDN does not cache HTML content. You need to create a Cache Level: Cache Everything Page Rule to enable caching for "pages".

If you don't use Cloudflare Enterprise with native Cache-Tag support, make sure to enable useLocalTags in your config/upper.php file (default), otherwise disable it.

Varnish Setup

UPPER_DRIVER=varnish
VARNISH_URL=<REPLACE-ME>

Tuning

With Cache-Control headers you can disabled caching for certain templates:

{% header "Cache-Control: private, no-cache" %}

Performance results

Cache Tag Headers

Disclaimer

Even if the name of the plugin and some wordings are intentional, the author does not glorify any drug abuse. 🍻 The plugin is inspired by the joshangell/Falcon.