How do I set up caching in a Rails application?

How do I set up caching in a Rails application?

To set up caching in a Rails application, you can use the built-in caching mechanisms like fragment caching, action caching, or low-level caching. First, ensure you have caching enabled in your environment configuration.

What configuration changes do I need to make?

In your config/environments/production.rb, set config.action_controller.perform_caching = true. You can also configure the cache store, for example, using Redis or Memcached.

Can you give me an example of fragment caching?

Sure! You can use the cache method in your views. For example: <%= cache('unique_cache_key') { render 'partial' } %> will cache the rendered partial.

How do I clear the cache?

You can clear the cache using the Rails console with Rails.cache.clear or by using the rake cache:clear command.