<div>mongoDB does not have LIKE. But it has regular expressions, so LIKE is easy to implement.</div><div>I doubt Redis has anything here. A true key-value store like Redis already doesn't make much sense with the filtering 'Where' queries. I think of Persistent not as a key-value friendly store, but as a noSQL friendly interface (no joins) that something like MongoDB fits in well.</div>
<div><br></div><div>The other think to think about is creating better capabilities for allowing users to use arbitrary SQL (or mongo queries) with Persistent.</div>