class Redis::Cluster

def process(commands, &block)
  if commands.size == 1 &&
     %w[unsubscribe punsubscribe].include?(commands.first.first.to_s.downcase) &&
     commands.first.size == 1
    # Node is indeterminate. We do just a best-effort try here.
    @node.process_all(commands, &block)
  else
    node = assign_node(commands.first)
    try_send(node, :process, commands, &block)
  end
end