MongoDB is only used as session storage since storing session in Firebase is not feasible. MongoDB1 upvote1271 views271CommentsCopy link
All the Front-end is pre-processed/merged/minified/modularized for production usage using gulp. gulp1 upvote1259 views259CommentsCopy link
We developed a docker based sandbox to run untrusted code. We open-sourced it here: https://github.com/remoteinterview/compilebox Docker2 upvotes2300 views300CommentsCopy link