GitLab is renowned for its radical transparency, exemplified by its public sharing of internal performance metrics through Grafana dashboards, a practice highlighted by Staff Backend Engineer Ben Kochie at GrafanaCon. Initially, GitLab used a simple Ruby script to synchronize internal and public dashboards, but as their system grew, they faced challenges with Prometheus scaling and query management, leading them to implement horizontal sharding and the Thanos query layer for better efficiency. To enhance caching and performance, GitLab integrated Trickster, a reverse proxy server, while also addressing potential data privacy risks through careful management of feature flags to prevent data leaks. Despite occasional system strain from heavy dashboard usage, GitLab continues to refine its infrastructure, aiming to incorporate the Thanos storage engine for improved query performance, and embraces the public engagement their dashboards receive.