# File lib/memcache.rb, line 276
  def incr(key, amount = 1)
    server, cache_key = request_setup key

    if @multithread then
      threadsafe_cache_incr server, cache_key, amount
    else
      cache_incr server, cache_key, amount
    end
  rescue TypeError, SocketError, SystemCallError, IOError => err
    handle_error server, err
  end