We use Julia in production at RelationalAI. Our cloud hosted next generation knowledge graph management system is a highly performant database and query optimiz

We use Julia in production at RelationalAI. Our cloud hosted next generation knowledge graph management system is a highly performant database and query optimization engine, and it's written 100% in Julia. We love Julia for the same reasons others have stated here: It's easy and intuitive to write, making it productive to work with for both our engineers and our mathematicians. It's reflection abilities make performance tuning and optimization easier than any experience I've had before. The ability to fine tune the assembly emitted for your hotspots _matters_, and it's straightforward to do in Julia. And for the rest of the code, being easy to write, easy to read, and close to the math are all a big win.