Decreased num alerts in history per page to 5 to avoid exceed memory and response limit

Tools/GardeningServer/alerts.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import calendar
 import datetime
 import json
 import logging
 import webapp2
 import zlib
@@ skipping 94 matching lines @@
         alerts = self.parse_alerts(self.request.get('content'))
         if alerts:
             self.post_to_memcache(alerts_type, alerts)
             self.post_to_history(alerts_type, alerts)
 
     def post(self):
         self.update_alerts(AlertsHandler.ALERTS_TYPE)
 
 
 class AlertsHistory(webapp2.RequestHandler):
-    MAX_LIMIT_PER_PAGE = 50
+    MAX_LIMIT_PER_PAGE = 5
 
     def get(self):
         alerts_query = AlertsJSON.query().order(-AlertsJSON.date)
         result_json = {}
 
         user = users.get_current_user()
         if not user:
             result_json['redirect-url'] = users.create_login_url(
                 self.request.uri)
 
@@ skipping 22 matching lines @@
         })
 
         self.response.headers['Content-Type'] = 'application/json'
         self.response.out.write(json.dumps(result_json))
 
 
 app = webapp2.WSGIApplication([
     ('/alerts', AlertsHandler),
     ('/alerts-history', AlertsHistory)
 ])