Indexing and Resolving to One www.domain.com format

[friendoffood]

People can come to a site www.domain.com  in these 6 different ways.

http://www.domain.com, www.domain.com, http://domain.com, domain.com

https://www.domain.com, https://domain.com

Obviously we don't want google to maintain an index for any more than one of these.

What is the way to handle this? 301 redirects for all to resolve to www.domain.com? Or is that overkill? Or 302 redirects?   Seems like a pretty basic issue but I'm not finding simple answers.

[OlegKorneitchouk]

301 redirect all of those (plus any /index.html url versions) to just 1 url. Which one? Base it off MOZ page authority.

[friendoffood]

Thanks Oleg, My site is pretty new, so I don't think one is better than another from an 'authority' standpoint.  So, should it just go to www.domain.com (which appears to be the equivalent of http://www.domain.com)?

[OlegKorneitchouk]

yep (and those two are equivalent).

In general... tech and young/trend target markets use no www.

For older crowd, use www.

[friendoffood]

interesting..thanks!