message: Increase initial Raft batch window size
diff: @@ -166,7 +166,7 @@ namespace aft
  size_t entry_size_not_limited = 0;
  size_t entry_count = 0;
  - Index entries_batch_size = 1;
  + Index entries_batch_size = 20;
  static constexpr int batch_window_size = 100;
  int batch_window_sum = 0;
  