diff --git a/app/controllers/admin/event_news_controller.rb b/app/controllers/admin/event_news_controller.rb
index 14f260f..37cb7c6 100644
--- a/app/controllers/admin/event_news_controller.rb
+++ b/app/controllers/admin/event_news_controller.rb
@@ -307,6 +307,9 @@ class Admin::EventNewsController < OrbitAdminController
     
     event_news.save
     build_email(event_news,I18n.locale)
+    Thread.new do
+      event_news.notify_feed("create")
+    end
     redirect_to params['referer_url']
   end
 
@@ -393,6 +396,9 @@ class Admin::EventNewsController < OrbitAdminController
       event_news.save
     end
     build_email(event_news,I18n.locale)
+    Thread.new do
+      event_news.notify_feed("update")
+    end
     now_event_news_page = EventNews.where(:title.ne => "",:is_preview.in=>[false,nil])
                               .order_by(sort).map(&:id).map.with_index.select{|v,i| v==event_news.id}[0][1] rescue nil
     now_event_news_page = now_event_news_page.nil? ? 0 : ((now_event_news_page+1).to_f/10).ceil
@@ -401,12 +407,18 @@ class Admin::EventNewsController < OrbitAdminController
 
   def destroy
     @event_news.destroy
+    Thread.new do
+      @event_news.notify_feed("destroy")
+    end
     redirect_to "/admin/event_news"
   end
 
   def delete
     if params[:ids]
       EventNews.any_in(:uid => params[:ids]).destroy_all
+      Thread.new do
+        EventNews.notify_feed_delete(params[:ids])
+      end
     end
     redirect_to "/admin/event_news"
   end
diff --git a/app/controllers/event_news_feeds_controller.rb b/app/controllers/event_news_feeds_controller.rb
index 66274ca..d3cb8e8 100644
--- a/app/controllers/event_news_feeds_controller.rb
+++ b/app/controllers/event_news_feeds_controller.rb
@@ -1,6 +1,27 @@
 require "rss"
 class EventNewsFeedsController < ApplicationController
 	include Admin::EventNewsHelper
+	def feed_add_remote
+		if params[:url].present?
+			uid = params[:uid].to_s
+			event_news_feed = EventNewsFeed.where(uid: uid).first
+			if !(event_news_feed.remote_urls.include?(params[:url]))
+				event_news_feed.remote_urls << params[:url]
+				event_news_feed.save
+			end
+		end
+		render :json => {success: true}
+	end
+	def feed_remove_remote
+		if params[:url].present?
+			uid = params[:uid].to_s
+			event_news_feed = EventNewsFeed.where(uid: uid).first
+			if event_news_feed.remote_urls.delete(params[:url])
+				event_news_feed.save
+			end
+		end
+		render :json => {success: true}
+	end
 	def feed
 		uid = params[:uid].to_s
 		startdt = params[:start].blank? ? nil : params[:start]
diff --git a/app/models/event_news.rb b/app/models/event_news.rb
index 1bf1ca9..661abe8 100644
--- a/app/models/event_news.rb
+++ b/app/models/event_news.rb
@@ -495,4 +495,126 @@ class EventNews
     end
     return a
   end
+  def get_related_feeds
+    @category_id ||= self.category_id
+    @tag_ids ||= self.tag_ids
+    related_feeds = EventNewsFeed.any_of({:category_ids=>@category_id.to_s}, {:tag_ids.in=>@tag_ids.map(&:to_s)}).to_a
+  end
+  def notify_feed(type="create")
+    if @is_hidden_changed
+      if self.is_hidden
+        if type == 'create'
+          return []
+        else
+          type = 'destroy'
+        end
+      else
+        type = 'create'
+      end
+    elsif self.is_hidden
+      return []
+    end
+    related_feeds = self.get_related_feeds.select{|feed| feed.remote_urls.count != 0}
+    if related_feeds.count != 0
+      bulletin_data = self.get_data
+      if type == "destroy"
+        tmp_data = {'type'=>'destroy', 'data'=>[self.uid]}
+      else
+        tmp_data = {'type'=>type, 'data'=>[bulletin_data.to_json]}
+      end
+      request = Net::HTTP::Post.new('/xhr/feeds/notify_change', 'Content-Type' => 'application/json')
+      related_feeds.each do |feed|
+        tmp_data['uid'] = feed.uid
+        request.body = tmp_data.to_json
+        feed.remote_urls.each do |remote_url|
+          uri = URI(remote_url)
+          http_req = Net::HTTP.new(uri.host, uri.port)
+          if remote_url.include?('https')
+            http_req.use_ssl = true
+          end
+          response = self.class.http_request( http_req , request )
+        end
+      end
+    end
+  end
+  def self.notify_all_feed(force_update=false)
+    related_feeds = EventNewsFeed.where(:remote_urls.nin=>[nil, []]).to_a
+    related_feeds.each do |feed|
+      uid = feed.uid
+      startdt = nil
+      enddt = nil
+      dt = nil
+      feed_cache = EventNewsFeedCache.where(uid: uid, start: startdt, end: enddt, date: dt)
+      if force_update
+        feed_cache = nil
+      else 
+        feed_cache_old = feed_cache.all_of([{:invalid_date.ne=>nil},{:invalid_date.lte => Time.now}]).last
+        feed_cache.all_of([{:invalid_date.ne=>nil},{:invalid_date.lte => Time.now}]).destroy
+        count = feed_cache.count
+        if count > 1
+          feed_cache.limit(count-1).destroy
+        end
+        feed_cache = feed_cache.first
+        anns = ''
+      end
+      if feed_cache.nil?
+        anns = feed.generate_one_cache_timeout(startdt: startdt,enddt: enddt,dt: dt,timeout: 20)
+        anns = (feed_cache_old.content rescue "") if anns.nil?
+      else
+        anns = feed_cache.content
+      end
+      request = Net::HTTP::Post.new('/xhr/feeds/notify_change', 'Content-Type' => 'application/json')
+      tmp_data = {'type'=>'update_all', 'uid'=> uid, 'data'=>anns}
+      request.body = tmp_data.to_json
+      feed.remote_urls.each do |remote_url|
+        uri = URI(remote_url)
+        http_req = Net::HTTP.new(uri.host, uri.port)
+        if remote_url.include?('https')
+          http_req.use_ssl = true
+        end
+        response = self.http_request( http_req , request )
+      end
+    end
+  end
+  def self.notify_feed_delete(ids)
+    all_feeds = EventNewsFeed.all.select{|feed| feed.remote_urls.count != 0}
+    if all_feeds.count != 0
+      tmp_data = {'type'=>'destroy'}
+      request = Net::HTTP::Post.new('/xhr/feeds/notify_change', 'Content-Type' => 'application/json')
+      all_feeds.each do |feed|
+        feed_uid = feed.uid
+        feed_cache = EventNewsFeedCache.where(:uid=>feed_uid).first
+        if feed_cache
+          tmp_data['uid'] = feed_uid
+          tmp_data['data'] = ids & JSON.parse(feed_cache.content)["announcements"].map{|a| a["id"]}
+          request.body = tmp_data.to_json
+          if tmp_data['data'].count != 0
+            feed.remote_urls.each do |remote_url|
+              uri = URI(remote_url)
+              http_req = Net::HTTP.new(uri.host, uri.port)
+              if remote_url.include?('https')
+                http_req.use_ssl = true
+              end
+              response = self.http_request( http_req , request )
+            end
+          end
+        end
+      end
+    end
+  end
+  def self.http_request(http, request)
+    response = http.request(request)
+    if response.code.to_i == 301 || response.code.to_i == 302
+      location = response["location"]
+      new_uri = URI(location)
+      http = Net::HTTP.new(new_uri.host, new_uri.port)
+      if location.include?('https')
+        http.use_ssl = true
+        http.verify_mode = OpenSSL::SSL::VERIFY_PEER
+      end
+      request.instance_variable_set(:@path, new_uri.path)
+      response = self.http_request(http, request)
+    end
+    response
+  end
 end
diff --git a/app/models/event_news_feed.rb b/app/models/event_news_feed.rb
index 9a7df3f..d1d2e7d 100644
--- a/app/models/event_news_feed.rb
+++ b/app/models/event_news_feed.rb
@@ -6,6 +6,7 @@ class EventNewsFeed
   field :title, as: :slug_title, type: String, localize: true
   field :tag_ids, type: Array, default: []
   field :category_ids, type: Array, default: []
+  field :remote_urls, type: Array, default: []
   before_save do
     EventNewsFeedCache.where(uid: self.uid).each do |cache|
       cache.regenerate
diff --git a/config/routes.rb b/config/routes.rb
index 499f0e3..de9478d 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -43,6 +43,8 @@ Rails.application.routes.draw do
         get ':slug_title-:uid', to: 'event_news_mods#show', as: :display
       end
     end
+    post "/xhr/event_news_mods/feed_add_remote/:uid" => "event_news_feeds#feed_add_remote"
+    post "/xhr/event_news_mods/feed_remove_remote/:uid" => "event_news_feeds#feed_remove_remote"
     get '/xhr/event_news/agenda' => 'event_news_mods#agenda'
     get "/xhr/event_news/feed/:uid" => "event_news_feeds#feed"
     get "/xhr/event_news/rssfeed/:uid" => "event_news_feeds#rssfeed"