We use Titan DB and are updating it to Janus since Titan is dead. We used Neo4j for a small hack at an event at the office mapping up bus routes and homes livin

We use Titan DB and are updating it to Janus since Titan is dead. We used Neo4j for a small hack at an event at the office mapping up bus routes and homes living along the bus stops to find out quickly how accessible they were, and it worked well ... for a hack. I really like Gremlin and I like how you can extend the relations and do new computations you never thought of easily, but it's not the savior it's been hailed as, in my opinion. For a lot of problems SQL will do you well, and migrating can be a bitch with SQL but if it's a domain where the basic functionality is solved (such as a web shop) I wouldn't bother with a graph database until i find a good use case for it. You can always migrate your SQL tables to a graph DB later on if you think it's worth it.