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dragonfly-cache

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dragonfly-cache is a cache adapter for Dragonfly. It allows you to store Dragonfly's jobs results without running them again and again on each call.

For now, dragonfly-cache supports only local caching of local files. It will be extended in a near future to support remote cache and file storages.

Installation

Add dragonfly-cache to your application's Gemfile:

gem 'dragonfly-cache'

And then execute:

bundle install

Or install it yourself as:

gem install dragonfly-cache

Configuration

Once installed, you should configure dragonfly-cache to set your application's root (/public by default, if the directory exists) and your cached url format (/dragonfly-cache/:sha/:name by default).

Dragonfly.app.configure do
  plugin :dragonfly_cache,
    server_root: Rails.application.root.join('public'),
    url_format:  '/media-cache/:sha/:name'
end

Configured as this, cached files will be stored in /public/media-cache/:sha/:name, where :name is the Dragonfly :name attribute of the attached file and :sha is a contraction of the job SHA params.

dragonfly-cache will try to do its best to shorten the :sha part of the url and prevent cache conflicts.

How does it work?

dragonfly-cache use a method similar to the one described in the Dragonfly documentation to process files on-the-fly and serve them remotely but use only define_url.

Credits

The dragonfly photography used in specs is a work from André Karwath and is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.

About

A cache adapter for Dragonfly, a ruby image/assets manager (http://markevans.github.io/dragonfly/).

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  • Ruby 100.0%