What do people use for Hugo static site search?

Hi I'm new to Go and Hugo. Looking to build a site and need search capabilities.

So far simply the Google site search. Not the best, but it works. 

Thanks, is that Google CSE?

No, simply add site:<myURL> to yours search. 

Bookmarked this ages ago but haven't yet used: http://www.blevesearch.com/news/Site-Search/

I haven't used anything personally but the docdock theme in the Hugo showcase uses lunr.js and horsey, which give a nice experience for the small theme site. Doesn't look like lunr would be suitable for anything over a few dozen pages, though: https://github.com/mkdocs/mkdocs/issues/859.