Mongoid Cache Sweeper with Mongoid::Observer
Posted
rails3在config/application.rb
rails2在config/environment.rb
# mongoid observers/sweepers
config.mongoid.observers = Dir["#{config.root}/app/observers/*.rb"].collect do |full_name|
File.basename(full_name,'.rb').to_sym
end
创建文件 app/observers/user_observer.rb
class UserObserver < Mongoid::Observer
def after_create(record)
expire_cache_for(record)
end
def after_update(record)
expire_cache_for(record)
end
def after_destroy(record)
expire_cache_for(record)
end
private
def expire_cache_for(record)
# 删除user过期的片段缓存
@u ||= ActionController::Base.new
@u.expire_fragment("user_#{record.id}")
# 删除user过期关系的片段缓存
if record.news.present?
@c.expire_fragment("news_#{record.news.id}")
end
# 删除user过期关系的页面缓存
@c.expire_page("/my/#{record.id}")
# 删除memcached的缓存
Rails.cache.delete([:user_info, "#{record.id}", :login])
end
end
参考
此文章 短链接: http://dlj.bz/bq82kZ
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