Update memcache -> remote cache in inline documentation.

docs/code-style.rst

@@ -79,13 +79,13 @@ In our Django code, never do direct
 use ``get_user_profile_by_{email,id}``. There are 3 reasons for this:
 
 #. It's guaranteed to correctly do a case-inexact lookup
-#. It fetches the user object from memcached, which is faster
+#. It fetches the user object from remote cache, which is faster
 #. It always fetches a UserProfile object which has been queried using
    .selected\_related(), and thus will perform well when one later
    accesses related models like the Realm.
 
 Similarly we have ``get_client`` and ``get_stream`` functions to fetch
-those commonly accessed objects via memcached.
+those commonly accessed objects via remote cache.
 
 Using Django model objects as keys in sets/dicts
 ------------------------------------------------

puppet/zulip_internal/files/graphite/aggregation-rules.conf

@@ -33,11 +33,11 @@
 #       every 5 seconds (see local.js), so aggregating over a longer period of time
 #       will inflate the output value
 
-# Aggregate all per-bucket memcached stats into a generic hit/miss stat
+# Aggregate all per-bucket remote cache stats into a generic hit/miss stat
 stats.<app>.cache.all.hit (5) = sum stats.<app>.cache.*.hit
 stats.<app>.cache.all.miss (5) = sum stats.<app>.cache.*.miss
 
-# Aggregate all per-bucket memcached stats counts into a generic hit/miss stat
+# Aggregate all per-bucket remote cache stats counts into a generic hit/miss stat
 stats_counts.<app>.cache.all.hit (5) = sum stats_counts.<app>.cache.*.hit
 stats_counts.<app>.cache.all.miss (5) = sum stats_counts.<app>.cache.*.miss
 

zerver/lib/actions.py

@@ -436,7 +436,7 @@ def do_deactivate_stream(stream, log=True):
     stream.name = new_name[:Stream.MAX_NAME_LENGTH]
     stream.save()
 
-    # Remove the old stream information from memcached.
+    # Remove the old stream information from remote cache.
     old_cache_key = get_stream_cache_key(old_name, stream.realm)
     cache_delete(old_cache_key)
 
@@ -609,7 +609,7 @@ def do_send_messages(messages):
     for message in messages:
         cache_save_message(message['message'])
         # Render Markdown etc. here and store (automatically) in
-        # memcached, so that the single-threaded Tornado server
+        # remote cache, so that the single-threaded Tornado server
         # doesn't have to.
         user_flags = user_message_flags.get(message['message'].id, {})
         sender = message['message'].sender
@@ -2244,7 +2244,7 @@ def do_update_message(user_profile, message_id, subject, propagate_mode, content
 
             for m in messages_list:
                 # The cached ORM object is not changed by messages.update()
-                # and the memcached update requires the new value
+                # and the remote cache update requires the new value
                 m.subject = subject
 
             changed_messages += messages_list

zerver/management/commands/create_realm.py

@@ -41,7 +41,8 @@ Usage: python2.7 manage.py create_realm --domain=foo.com --name='Foo, Inc.'"""
 
     def validate_domain(self, domain):
         # Domains can't contain whitespace if they are to be used in memcached
-        # keys.
+        # keys. Seems safer to leave that as the default case regardless of
+        # which backing store we use.
         if re.search("\s", domain):
             raise ValueError("Domains can't contain whitespace")
 

zerver/test_messages.py

@@ -1087,7 +1087,7 @@ class GetOldMessagesTest(AuthedTestCase):
         m = Message.objects.all().order_by('-id')[0]
         m.rendered_content = m.rendered_content_version = None
         m.content = 'test content'
-        # Use to_dict_uncached directly to avoid having to deal with memcached
+        # Use to_dict_uncached directly to avoid having to deal with remote cache
         d = m.to_dict_uncached(True)
         self.assertEqual(d['content'], '<p>test content</p>')
 

zerver/views/messages.py

@@ -548,7 +548,7 @@ def get_old_messages_backend(request, user_profile,
     # 'user_messages' dictionary maps each message to the user's
     # UserMessage object for that message, which we will attach to the
     # rendered message dict before returning it.  We attempt to
-    # bulk-fetch rendered message dicts from memcached using the
+    # bulk-fetch rendered message dicts from remote cache using the
     # 'messages' list.
     search_fields = dict()
     message_ids = []