Which solution for a detailed product search?
===

I need to build some kind of product search and i'm not sure, which way I should go.

Requirements:

 - Proximity Search 
 - Custom Ranking
 - Auto-correct-Suggestions, like in Google when you type "Winipedia", it suggest "Wikipedia".
 - Indexing PDFs as field value of a search entity
 - German Language Support for Autocorrect-Suggestions
 - Auto-complete support

I tried it with AWS CloudSearch, but their support sucks if you don't pay extra for support and they don't support German yet, nor Auto-complete.

Is there any search solution with all the functions I need? Elasticsearch looks good, but I can't find any detailed feature list about it.

Thanks in advance for any help!

Regards
Nils


