My favorite part of DGraph is that they use GraphQL +/- as their query language because I'm able to easily get back exactly what data I need without having to write complex joins.
Their Ratel interface for running queries was thoughtfully designed creating an excellent developer experience. Having the ability to choose whether we see our query responses as JSON or a visualized as a graph has made a huge difference in our productivity because we're able to clearly understand the implicit relationships in our data.
DGraph has a very responsive and helpful developer advocate team who is always willing to help. They've invested a lot of time into making quality documentation that is easy to get started with and has remained supportive as I continue to learn more.
I am a big fan of DQL. At Mooncamp we use it in every part of our application, and it feels like Dgraph built the missing parts to GraphQL. Furthermore, I love Dgraph's facets. We use it to store information such as the order on edges. This used to be very complicated to model in relational databases and is now so easy with Dgraph.
Dgraph has been absolutely instrumental in solving complex issues on widely used internal tools within Comcast. Having full GraphQL compliance on top of DQL (Dgraph Query Language) has made building robust dashboards with ease without sacrificing performance. One of our hardest problems to solve was building a la carte queries with complex reverse references and deep relationships. With Dgraph it solves all of those needs without having to build out custom solutions or middleware.