What a nerd.
Over the past 6 months, the developers for the site have been bootstrapping an entirely new backend for the site named Philomena. This was deemed necessary due to unavoidable shortcomings of the previous Ruby on Rails backend, which we are planning to deprecate and release the source of within a few weeks.
The alpha testers and I believe we have gotten the release to the point where it should be usable for average use over the Rails application. You can try out Philomena using this link. (It is expected that you’ll have to log in again.) Please report anything you consider to be a bug, but before you do, please also read the following:
philomena.derpibooru.orgdomain will remain around for at least as long as we continue to run the old Rails API, in case someone hardcodes the domain into a program and doesn’t update it when we switch the domains.
Derpibooru costs over $25 a day to operate - help support us financially!