Apache restart with Vim autocmd
In order to execute a command right after saving a file in Vim, you can use the :autocmd command. Here is a quick example how it can be useful with Apache files.
NB: on my system, Debian in this case, an Apache file is automatically recognized as filetype=apache.
augroup apache
autocmd BufWritePost */sites-enabled/* !/etc/init.d/apache2 restart
augroup END