Cachers

Dedicated classes to isolate redis logic in rails.

We did this gem to:

• Prevent models to have too much code.
• Have a convention of how to use cache in models.
• Increase atomization in complex projects.

Put this line in your Gemfile:

gem 'cachers'

Then bundle:

$ bundle

Generate a cacher for a model:

$ bundle exec rails g cacher like

Add the logic to the cache and uncache methods:

class LikeCacher < Cachers::Base

  def cache
    sadd key, record.product.id
  end

  def uncache
    srem key, record.product.id
  end

  private

  def key
    "users/#{record.user.id}/likes"
  end

end

NOTE: Updates work automatically, there is no need to add a method to replace values.

You may want to add some other methods related to the cache:

class UserCacher < Cachers::Base

  def likes?(product)
    sismember key, product.id
  end

  private

  def key
    "users/#{record.id}/likes"
  end

end

The public methods will be available to call directly from the model:

user.likes? product

If you want to manually control the cache, you can use this methods:

user.cache
user.recache
user.uncache

Or to it for all cacheable records:

$ bundle exec rake cachers:cache
$ bundle exec rake cachers:recache
$ bundle exec rake cachers:uncache

Any issue, pull request, comment of any kind is more than welcome!

We will mainly ensure compatibility to Rails, AWS, PostgreSQL, Redis, Elasticsearch and FreeBSD. 

This gem is maintained and funded by museways.

It is free software, and may be redistributed under the terms specified in the MIT-LICENSE file.