Append only (log) entity database
Append only database suited for building up a log file to send off to S3
The current log db requires postgres and node. There is a vagrant environment provided to make this easy.
Berkshelf is awesome particularly since we can use it to download the deps into "cookbooks" and check those in so its easy to get start without berkshelf / bundler around.
To update the cookbooks though you should update the Berksfile and run make cookbooks.