do not use disk-based cache for what's already in memory

kalite/caching/__init__.py

@@ -24,7 +24,7 @@
 from django.core.urlresolvers import reverse
 from django.test.client import Client
 
-from fle_utils.internet.webcache import *
+from fle_utils.internet.webcache import get_web_cache, has_cache_key, expire_page, caching_is_enabled, invalidate_web_cache
 from kalite import i18n, topic_tools
 from kalite.topic_tools.settings import DO_NOT_RELOAD_CONTENT_CACHE_AT_STARTUP
 

kalite/main/api_views.py

@@ -9,14 +9,12 @@
 
 from fle_utils.internet.decorators import api_handle_error_with_json
 from fle_utils.internet.classes import JsonResponse, JsonResponseMessageError
-from fle_utils.internet.webcache import backend_cache_page
 
 from kalite.topic_tools import get_topic_tree
 from kalite.topic_tools.content_recommendation import get_resume_recommendations, get_next_recommendations, get_explore_recommendations
 from kalite.facility.models import FacilityUser
 
 @api_handle_error_with_json
-@backend_cache_page
 def topic_tree(request, channel):
     parent = request.GET.get("parent")
     return JsonResponse(get_topic_tree(channel=channel, language=request.language, parent=parent))