redis_config_file = Rails.root.join('config', 'resque.yml')

redis_url_string = if File.exists?(redis_config_file)
                     YAML.load_file(redis_config_file)[Rails.env]
                   else
                     "redis://localhost:6379"
                   end

# Redis::Store does not handle Unix sockets well, so let's do it for them
redis_config_hash = Redis::Store::Factory.extract_host_options_from_uri(redis_url_string)
redis_uri = URI.parse(redis_url_string)
if redis_uri.scheme == 'unix'
  redis_config_hash[:path] = redis_uri.path
end

redis_config_hash[:namespace] = 'cache:gitlab'

Gitlab::Application.config.cache_store = :redis_store, redis_config_hash

Gitlab::Application.configure do
  redis_config_file = Rails.root.join('config', 'resque.yml')

  redis_url_string = if File.exists?(redis_config_file)
                       YAML.load_file(redis_config_file)[Rails.env]
                     else
                       "redis://localhost:6379"
                     end

  # Redis::Store does not handle Unix sockets well, so let's do it for them
  redis_config_hash = Redis::Store::Factory.extract_host_options_from_uri(redis_url_string)
  redis_uri = URI.parse(redis_url_string)
  if redis_uri.scheme == 'unix'
    redis_config_hash[:path] = redis_uri.path
  end

  redis_config_hash[:namespace] = 'cache:gitlab'

  config.cache_store = :redis_store, redis_config_hash
end

Hide configuration shenanigans in a block
Hide configuration shenanigans in a block

I'm feeling paranoid about the scope variables like redis_config_file
get defined in. Hiding it in a block to limit the scope.
