We used mainly Golang for performance reasons.
- All the backends (git infrastructure, game engine, game scheduling, ...) are written in Golang.
- The game engine includes collisions detections, agent physics, visualization rendering, projectiles, ...
- We have our own message broker system written in Nodejs (which suffer from performance issues). We are planning to re-write it in Golang or use a solution like Apache Kafka.
- The visualization of the arena in 3D is made with BabylonJS and written in TypeScript.
- We use HAProxy extensively to handle all the traffic from the outside as well as internal inter-service communications, TLS termination, load balancing and security.
- All the services are running in Docker containers and deployment/orchestration is done using Ansible.
- The website is written in PHP, we used the Symfony framework.
- GraphQL is used internally to exchange data between services.
- We use telegraf, influxdb and Grafana for the monitoring of our platform.
We used mainly Golang for performance reasons.