Added Redis connection (#4398)

Gemfile

@@ -15,6 +15,7 @@ gem 'cssbundling-rails'
 gem 'data_migrate'
 gem 'dotenv-rails'
 gem 'hcaptcha'
+gem 'hiredis', '~> 0.6.0'
 gem 'i18n-language-mapping'
 gem 'image_processing', '~> 1.2'
 gem 'jbuilder'

Gemfile.lock

@@ -156,6 +156,7 @@ GEM
     hashie (5.0.0)
     hcaptcha (7.1.0)
       json
+    hiredis (0.6.3)
     httpclient (2.8.3)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
@@ -402,6 +403,7 @@ DEPENDENCIES
   factory_bot_rails
   faker
   hcaptcha
+  hiredis (~> 0.6.0)
   i18n-language-mapping
   image_processing (~> 1.2)
   jbuilder

config/environments/production.rb

@@ -90,7 +90,7 @@ Rails.application.configure do
   config.log_tags = [:request_id]
 
   # Use a different cache store in production.
-  # config.cache_store = :mem_cache_store
+  config.cache_store = :redis_cache_store, { url: ENV.fetch('REDIS_URL', nil) }
 
   # Use a real queuing backend for Active Job (and separate queues per environment).
   config.active_job.queue_adapter = :async # TODO: Configure :resque