garrensmith commented on a change in pull request #2662: Use `couch_rate` 
application for `couch_view`
URL: https://github.com/apache/couchdb/pull/2662#discussion_r396383000
 
 

 ##########
 File path: src/couch_rate/src/couch_rate_ets.erl
 ##########
 @@ -0,0 +1,147 @@
+% Licensed under the Apache License, Version 2.0 (the "License"); you may not
+% use this file except in compliance with the License. You may obtain a copy of
+% the License at
+%
+%   http://www.apache.org/licenses/LICENSE-2.0
+%
+% Unless required by applicable law or agreed to in writing, software
+% distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+% WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+% License for the specific language governing permissions and limitations under
+% the License.
+
+-module(couch_rate_ets).
+
+-include("couch_rate.hrl").
+
+-export([
+    create_tables/0,
+    new/3,
+    from_map/3,
+    budget/1,
+    delay/1,
+    wait/1,
+    in/2,
+    success/2,
+    failure/1,
+    is_congestion/1,
+    min_latency/1,
+    format/1,
+    to_map/1,
+    module/1,
+    state/1,
+    table_name/1,
+    table_names/0
+]).
+
+
+-define(SHARDS_N, 16).
+
+-compile({parse_transform, lookup_pt}).
+
+%% The following directive would generate following code
 
 Review comment:
   I agree with @nickva on this. I would prefer we remove the transform unless 
it is a critical performance bottleneck. I would prefer adding itin as a 
separate commit to be used whereever we are adding sharded ets tables.
   
   

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