change cache store to redis_cache_store (#112)

Gemfile

@@ -60,6 +60,7 @@ group :production do
   gem "aws-sdk-s3", require: false
   gem "figaro", "~> 1.2"
   gem "fog-aws"
+  gem "redis", "~> 4.8"
   gem "sidekiq", "~> 6.0"
   gem "sidekiq-cron"
 end

Gemfile.lock

@@ -1010,6 +1010,7 @@ DEPENDENCIES
   letter_opener_web (~> 1.3)
   listen (~> 3.1)
   puma (>= 5.0.0)
+  redis (~> 4.8)
   rspec (~> 3.10)
   rubocop-faker
   sentry-rails

config/environments/production.rb

@@ -52,7 +52,7 @@
   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", "redis://localhost:6379") }
 
   # Use a real queuing backend for Active Job (and separate queues per environment)
   # config.active_job.queue_adapter     = :resque
@@ -72,7 +72,7 @@
   config.active_support.deprecation = :notify
 
   # Use default logging formatter so that PID and timestamp are not suppressed.
-  config.log_formatter = ::Logger::Formatter.new
+  config.log_formatter = Logger::Formatter.new
   config.action_mailer.smtp_settings = {
     address: Rails.application.secrets.smtp_address,
     port: Rails.application.secrets.smtp_port,