Provide an alternative to ActiveRecord#find that uses the Rails cache to store retrieved items to reduce database load and increase performance for subsequent lookups for the same item. CacheLookup also provides cache expiry for items when they are updated or deleted from the database.
Add this line to your application's Gemfile:
And then execute:
Or install it yourself as:
$ gem install cache_lookup
In your ActiveRecord model:
class Article < ActiveRecord::Base cache_lookup :id cache_lookup :slug end
In your controller:
class ArticleController < ApplicationController def show @article = Article.lookup_by_id(params[:id]) end end
Defines the attribute to use as the cache key, and for reading from the database. The attribute must return a single item when queried, otherwise cache expiry will be broken.
Typically, the attribute will be 'id', but can be any attribute on the model.
class Article < ActiveRecord::Base cache_lookup :id end
The method lookup_by_ will be added to your model. In the above example, this will be lookup_by_id. When used with the 'id' attribute, this can be a direct replacement for Model.find(id).
- Fork it
- Create your feature branch (
git checkout -b my-new-feature)
- Commit your changes (
git commit -am 'Added some feature')
- Push to the branch (
git push origin my-new-feature)
- Create new Pull Request
CacheLookup is maintained by CRAZ8