@type config() :: map()

@type names() :: %{
  wal: atom(),
  wal_sup: atom(),
  log_sup: atom(),
  log_ets: atom(),
  log_meta: atom(),
  log_sync: atom(),
  open_mem_tbls: atom(),
  segment_writer: atom(),
  server_sup: atom(),
  directory: atom(),
  directory_rev: atom()
}