I use MongoDB and to do that I use MongoKit. Works really well. I also use Redis for the caching (note: not as a database) For both Mongo and Redis I use the

I use MongoDB and to do that I use MongoKit. Works really well. I also use Redis for the caching (note: not as a database) For both Mongo and Redis I use the sync libraries. So far, I don't have any slow queries that would require me to async them.