CODEWITHSUNDEEP
ruby-on-rails
arunt
arunt

Reputation: 386

Rails config.cache_store what happens this value evaluates to nil?

What happens if config.cache_store in configuration evaluates to nil in Rails?

I have been looking at my Rails application and trying to optimize it in production (Details - nearly 2 years old, API only, Rails 5.0.7, deployed on AWS EC2 with Ubuntu 16.04 OS, using nginx and puma). We have multiple production instances with an Application Load Balancer attached.

I was surprised to see this line in my production.rb: config.cache_store = :redis_store, ENV['REDIS_URL']

We haven't set up any Redis servers for caching. And sure enough, ENV['REDIS_URL'] was nil when I checked.

So, my question is - what happens in this situation? Is there no cache? Does it default to :file_store?

Upvotes: 0

Views: 2325

Answers (1)

M.Elkady
M.Elkady

Reputation: 1133

use rails console in production to know which type of cache store is used 

Rails.cache.class

I think in your case it will be ActiveSupport::Cache::NullStore and this means no real cache you can know more about this type of store here https://api.rubyonrails.org/classes/ActiveSupport/Cache/NullStore.html

Upvotes: 1

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