diff --git a/boards/mdx_neboard.py b/boards/mdx_neboard.py
--- a/boards/mdx_neboard.py
+++ b/boards/mdx_neboard.py
@@ -65,14 +65,8 @@ class ReflinkPattern(Pattern):
             ref_element = etree.Element('a')
 
             post = posts[0]
-            if not post.is_opening():
-                link = reverse('thread', kwargs={
-                    'post_id': post.thread_new.get_opening_post().id})\
-                       + '#' + post_id
-            else:
-                link = reverse('thread', kwargs={'post_id': post_id})
 
-            ref_element.set('href', link)
+            ref_element.set('href', post.get_url())
             ref_element.text = m.group(2)
 
             return ref_element
diff --git a/boards/models/post.py b/boards/models/post.py
--- a/boards/models/post.py
+++ b/boards/models/post.py
@@ -9,6 +9,7 @@ import hashlib
 
 from django.core.cache import cache
 from django.core.paginator import Paginator
+from django.core.urlresolvers import reverse
 
 from django.db import models, transaction
 from django.http import Http404
@@ -23,6 +24,7 @@ MAX_TITLE_LENGTH = 50
 APP_LABEL_BOARDS = 'boards'
 
 CACHE_KEY_PPD = 'ppd'
+CACHE_KEY_POST_URL = 'post_url'
 
 POSTS_PER_DAY_RANGE = range(7)
 
@@ -307,6 +309,26 @@ class Post(models.Model):
         thread.last_edit_time = edit_time
         thread.save()
 
+    def get_url(self):
+        """
+        Get full url to this post
+        """
+
+        cache_key = CACHE_KEY_POST_URL + str(self.id)
+        link = cache.get(cache_key)
+
+        if not link:
+            if not self.is_opening():
+                link = reverse('thread', kwargs={
+                    'post_id': self.thread_new.get_opening_post().id}) + '#' + str(
+                    self.id)
+            else:
+                link = reverse('thread', kwargs={'post_id': self.id})
+
+            cache.set(cache_key, link)
+
+        return link
+
 
 class Thread(models.Model):
 
diff --git a/boards/templatetags/board.py b/boards/templatetags/board.py
--- a/boards/templatetags/board.py
+++ b/boards/templatetags/board.py
@@ -1,4 +1,3 @@
-from django.core.urlresolvers import reverse
 from django.shortcuts import get_object_or_404
 from boards.models import Post
 from boards.views import thread, api
@@ -24,14 +23,7 @@ def post_url(*args, **kwargs):
 
     post = get_object_or_404(Post, id=post_id)
 
-    if not post.is_opening():
-        link = reverse('thread', kwargs={
-            'post_id': post.thread_new.get_opening_post().id}) + '#' + str(
-            post_id)
-    else:
-        link = reverse('thread', kwargs={'post_id': post_id})
-
-    return link
+    return post.get_url()
 
 
 @register.simple_tag(name='image_actions')