I don't. I would like to use a simple and free key-value store that I can call in process but such thing doesn't exist afaik on the Windows platform. Now I use Sqlite but I would like to use something like Tokyo Cabinet. BerkeleyDB has license "issues".
However if you want to use the Windows OS your choice of NoSQL databases is limited. And there isn't always a C# provider
I did try MongoDB and it was 40 times faster than Sqlite, so maybe I should use it. But I still hope for a simple in process solution.
