Lucene as data store

Question

Is it possible to use Lucene as full fledged data store (like other(mongo,couch) nosql variants).

I know there are some limitations like newly updated documents by one

Answer 1

The Guardian uses Solr as their data store. You can see some of their reasons in that slideshow.

In any case, I think their website is very heavily trafficked (certainly more so than anything I work on), so I think I would feel comfortable saying that Solr will probably work for you., since it scales to their requirements.