MongoDB World 2019 Live Blog - Day 3 | MongoDB Blog We're live at MongoDB World for Day 3 as the blog team cover all the events taking place over the day, especially the fun and learning going on at Builders Fest. The event featured a number of sessions and activities, including keynotes, tutorials, and networking opportunities. The blog team is providing an auto-updating live blog to keep attendees informed about the latest news and updates from the event.