diff --git a/app/controllers/admin/announcements_controller.rb b/app/controllers/admin/announcements_controller.rb
index e9fb486..8ac7404 100644
--- a/app/controllers/admin/announcements_controller.rb
+++ b/app/controllers/admin/announcements_controller.rb
@@ -236,6 +236,7 @@ class Admin::AnnouncementsController < OrbitAdminController
     
     bulletin.save
     build_email(bulletin,I18n.locale)
+    create_feed_cache(bulletin)
     redirect_to params['referer_url']
   end
 
@@ -253,6 +254,7 @@ class Admin::AnnouncementsController < OrbitAdminController
       send_rejection_email(bulletin,I18n.locale)
     end
     bulletin.save
+    create_feed_cache(bulletin)
     redirect_to admin_announcements_path
   end
 
@@ -322,6 +324,7 @@ class Admin::AnnouncementsController < OrbitAdminController
       bulletin.save
     end
     build_email(bulletin,I18n.locale)
+    create_feed_cache(bulletin)
     now_bulletin_page = Bulletin.where(:title.ne => "",:is_preview.in=>[false,nil])
                               .order_by(sort).map(&:id).map.with_index.select{|v,i| v==bulletin.id}[0][1] rescue nil
     now_bulletin_page = now_bulletin_page.nil? ? 0 : ((now_bulletin_page+1).to_f/10).ceil
@@ -404,6 +407,7 @@ class Admin::AnnouncementsController < OrbitAdminController
     
     bulletin.is_preview = true
     bulletin.save
+    create_feed_cache(bulletin)
     render :text=>page_for_bulletin(bulletin) + "?preview=true"
   end
 
@@ -476,4 +480,17 @@ class Admin::AnnouncementsController < OrbitAdminController
   def settings_params
     params.require(:announcement_setting).permit!
   end
+
+  def create_feed_cache(bulletin)
+    BulletinFeed.where(:tag_ids.in => Array(bulletin.tag_ids).collect{|v| v.to_s}).each do |bulletin_feed|
+      uid = bulletin_feed.uid
+      uri = URI(request.protocol + request.host_with_port + "/xhr/announcements/feed/#{uid}.json")
+      Thread.new do
+        res_net = Net::HTTP.start(uri.host, uri.port,:use_ssl => uri.scheme == 'https',open_timeout: 60,read_timeout: 60) do |http|
+          req = Net::HTTP::Get.new(uri)
+          http.request(req)
+        end
+      end
+    end
+  end 
 end
diff --git a/app/controllers/announcement_feeds_controller.rb b/app/controllers/announcement_feeds_controller.rb
index edfc61c..54fde71 100644
--- a/app/controllers/announcement_feeds_controller.rb
+++ b/app/controllers/announcement_feeds_controller.rb
@@ -3,8 +3,21 @@ class AnnouncementFeedsController < ApplicationController
 	include Admin::AnnouncementsHelper
 	def feed
 		uid = params[:uid]
-		anns = get_announcements(uid)
-		render :json => anns.to_json
+		feed_cache = BulletinFeedCache.where(uid: uid).first
+		anns = ''
+		if feed_cache.nil?
+			BulletinFeedCache.create(uid: uid,content: '')
+			Thread.new do
+				anns = get_announcements(uid).to_json
+				feed_cache = BulletinFeedCache.where(uid: uid).first
+				if !feed_cache.nil?
+					feed_cache.update_attributes(content: anns)
+				end
+			end
+		else
+			anns = feed_cache.content
+		end
+		render :json => anns
 	end
 
 	def rssfeed
@@ -46,21 +59,10 @@ class AnnouncementFeedsController < ApplicationController
 
 	def smart_convertor(text)
 		html_string = text
-		links = html_string.scan(/img.*?src="(.*?)"/i)
-		links = links + html_string.scan(/a.*?href="(.*?)"/i)
-		links.uniq!
-		links.each do |link|
-			l = link.first
-			new_link = nil
-			if l.starts_with?("/")
-				new_link = request.protocol + request.host_with_port + l
-			elsif l.starts_with?("..")
-				l1 = l.gsub("../","")
-				new_link = request.protocol + request.host_with_port + "/" + l1
-			end
-			html_string = html_string.gsub(l,new_link) if !new_link.nil?
-		end
-		return html_string
+	  url = request.protocol + request.host_with_port
+	  html_string = html_string.gsub(/img.*?src="(?=\/)(.*?)|a.*?href="(?=\/)(.*?)/i){|w| w+url}
+	  html_string = html_string.gsub(/img.*?src="\.\.(?=\/)(.*?)|a.*?href="\.\.(?=\/)(.*?)/i){|w| w[0...-2]+url}
+	  return html_string
 	end
 
 	def get_announcements(uid)
diff --git a/app/models/bulletin_feed_cache.rb b/app/models/bulletin_feed_cache.rb
new file mode 100644
index 0000000..09f7e57
--- /dev/null
+++ b/app/models/bulletin_feed_cache.rb
@@ -0,0 +1,8 @@
+class BulletinFeedCache
+  include Mongoid::Document
+  include Mongoid::Timestamps
+
+	field :content, type: String, default: ''
+	field :uid
+
+end
\ No newline at end of file
diff --git a/lib/bulletin_model/cache.rb b/lib/bulletin_model/cache.rb
index a8bb061..cbb38d7 100644
--- a/lib/bulletin_model/cache.rb
+++ b/lib/bulletin_model/cache.rb
@@ -9,6 +9,9 @@ module BulletinModel
       if self.class == SubPart
         AnnsCache.where(parent_id:self.id).destroy
       elsif self.class == Bulletin || (self.class == Page && self.module == "announcement")
+        if self.class == Bulletin
+          BulletinFeedCache.where(:tag_ids.in => Array(self.tag_ids).collect{|v| v.to_s}).destroy
+        end
         AnnsCache.all.destroy
       end
     end