use ``cacheResponseAndETAG`` instead of just cache

docs/common_tasks.rst

@@ -36,12 +36,6 @@ To add a new repository, the following steps are needed:
 
      > python manage.py init_datasources
 
-* Restart memcached to clean any previously cached datasource
-
-  .. code-block:: bash
-
-     > sudo /etc/init.d/memcached restart
-
 * Generate a new oauth credentials file:
 
   .. code-block:: bash

treeherder/model/models.py

@@ -19,10 +19,13 @@ from warnings import filterwarnings, resetwarnings
 from jsonfield import JSONField
 
 from treeherder import path
+from treeherder.webapp.api import refdata
 
 
 # the cache key is specific to the database name we're pulling the data from
 SOURCES_CACHE_KEY = "treeherder-datasources"
+REPOSITORY_LIST_CACHE_KEY = 'treeherder-repositories'
+FAILURE_CLASSIFICAION_LIST_CACHE_KEY = 'treeherder-failure-classifications'
 
 SQL_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'sql')
 
@@ -211,6 +214,7 @@ class Datasource(models.Model):
     @classmethod
     def reset_cache(cls):
         cache.delete(SOURCES_CACHE_KEY)
+        cache.delete(REPOSITORY_LIST_CACHE_KEY)
         cls.objects.cached()
 
     @classmethod

treeherder/settings/base.py

@@ -312,3 +312,7 @@ def obtain_username(email):
 BROWSERID_USERNAME_ALGO = obtain_username
 
 SWAGGER_SETTINGS = {"enabled_methods": ['get',]}
+
+REST_FRAMEWORK_EXTENSIONS = {
+    'DEFAULT_CACHE_RESPONSE_TIMEOUT': 60 * 15
+}

treeherder/webapp/api/refdata.py

@@ -1,7 +1,7 @@
 from rest_framework import viewsets
 from rest_framework.response import Response
 from rest_framework.authentication import SessionAuthentication
-from rest_framework_extensions.cache.mixins import CacheResponseMixin
+from rest_framework_extensions.mixins import CacheResponseAndETAGMixin
 
 from django.contrib.auth.models import User
 
@@ -35,12 +35,15 @@ class JobGroupViewSet(viewsets.ReadOnlyModelViewSet):
     model = models.JobGroup
 
 
-class RepositoryViewSet(CacheResponseMixin,
+class RepositoryViewSet(CacheResponseAndETAGMixin,
                         viewsets.ReadOnlyModelViewSet):
     """ViewSet for the refdata Repository model"""
     model = models.Repository
     serializer_class = th_serializers.RepositorySerializer
 
+    def list_cache_key_func(self, **kwargs):
+        return models.REPOSITORY_LIST_CACHE_KEY
+
 
 class MachinePlatformViewSet(viewsets.ReadOnlyModelViewSet):
     """ViewSet for the refdata MachinePlatform model"""
@@ -93,11 +96,13 @@ class JobTypeViewSet(viewsets.ReadOnlyModelViewSet):
     model = models.JobType
 
 
-class FailureClassificationViewSet(CacheResponseMixin,
+class FailureClassificationViewSet(CacheResponseAndETAGMixin,
                                    viewsets.ReadOnlyModelViewSet):
     """ViewSet for the refdata FailureClassification model"""
     model = models.FailureClassification
 
+    def list_cache_key_func(self, **kwargs):
+        return models.FAILURE_CLASSIFICAION_LIST_CACHE_KEY
 
 #############################
 # User and exclusion profiles