Use lrudecorator to memoize wp_load_article lookups

Reading profiling data on wp_load_article points to
wp.wp_load_article() being called many times, and being
slow.

This patch gives us radical speedups on cached stuff, and modest
cache results.

Andorra goes from 15.5s to 14.5s cold-cache. Once the cache is seeded
it returns in 0.7s.

1 files changed, 8 insertions, 1 deletions

diff --git a/server.py b/server.py
index 406d45b..9b301be 100755
--- a/server.py
+++ b/server.py
@@ -37,6 +37,7 @@ import tempfile
 import re
 import wp
 import xml.dom.minidom
+from pylru import lrudecorator
 
 # Uncomment to print out a large dump from the template expander.
 #os.environ['DEBUG_EXPANDER'] = '1'
@@ -110,7 +111,7 @@ class WPWikiDB:
                 article_text = ""
                 break
 
-            article_text = unicode(wp.wp_load_article(title.encode('utf8')), 'utf8')
+            article_text = unicode(wp_load_article(title.encode('utf8')), 'utf8')
             
             # To see unmodified article_text, uncomment here.
             # print article_text
@@ -763,6 +764,12 @@ def load_db(dbname):
         dbname + '.locate.prefixdb',
         dbname + '.blocks.db')
 
+# Cache articles and specially templates
+@lrudecorator(100)
+def wp_load_article(title):
+    
+    return wp.wp_load_article(title)
+
 def run_server(confvars):
     index = ArticleIndex('%s.index.txt' % confvars['path'])