I'm coding HTML and I'm making a link to a title page. I have two ideas:

1. relative:  

`<a href="/">`
2. absolute, for example:  

`<a href="http://www.example.com/">`

(Assuming I work on www.example.com)  

Which way is better? I guess absolute way is better for SEO, because you have links to your website. But maybe the absolute way is also slower, because the browser has to ask the DNS server and load the page completely again? Thank you!