kaiwren/wrest

# frozen_string_literal: true

begin
  gem 'dalli', '~> 2'
rescue Gem::LoadError => e
  Wrest.logger.debug 'Dalli ~> 2 not found. The Dalli gem is necessary to use the memcached caching back-end.'
  raise e
end

require 'dalli'

module Wrest
  module Caching
    class Memcached
      def initialize(server_urls = nil, options = {})
        @memcached = Dalli::Client.new(server_urls, options)
      end

      def [](key)
        @memcached.get(key)
      end

      def []=(key, value)
        @memcached.set(key, value)
      end

      # should be compatible with Hash - return value of the deleted element.
      def delete(key)
        value = self[key]

        @memcached.delete key

        value
      end
    end
  end
end