message: Add TODO markers to improve freenode perf
diff: @@ -79,6 +79,14 @@ function DataStore(userStore, roomStore, pkeyPath) {
  throw err;
  }
  }
  +
  + // Cache as many mappings as possible for hot paths like message sending.
  +
  + // TODO: cache IRC channel -> [room_id] mapping (only need to remove them in
  + // removeRoom() which is infrequent)
  + // TODO: cache room_id -> [#channel] mapping (only need to remove them in
  + // removeRoom() which is infrequent)
  +
  }
  DataStore.prototype.setServerFromConfig = Promise.coroutine(function*(server, serverConfig) {
  