RobloxDB is Roblox’s in-house, next-generation multi-tenant distributed database platform that underpins every online data workload across the Roblox ecosystem, built entirely by Roblox’s dedicated database engineering team rather than relying solely on off-the-shelf solutions .
It is purpose-engineered to meet the platform’s extreme global scale requirements, supporting high-QPS, low-latency operations for tens of millions of concurrent users, while delivering strong consistency, multi-region high availability, and elastic scaling to keep services fast, reliable, and cost-efficient as Roblox’s user base and data footprint expand toward multi-exabyte volumes .
Core technical capabilities of RobloxDB include custom-built database engine enhancements (optimized indexing, storage formats, WAL, replication protocols, sharding, and query planner improvements), an advanced control plane that enables autonomous healing, zero-downtime schema updates, and seamless tenant migration across global regions, plus full integration with Kubernetes/Nomad container orchestration stacks paired with comprehensive observability frameworks . The team behind RobloxDB also actively contributes upstream improvements to open-source ecosystems including #PostgreSQL and RocksDB, extending the value of their custom engineering work to the broader database community .
The system is built on deep expertise in database internals (B-trees, MVCC, buffer management), consensus algorithms (Raft, Paxos), and low-level performance optimization, with rigorous automation for testing, CI/CD, rollout safety, and auto-scaling that allows the platform to operate reliably at massive scale with minimal manual intervention
https://careers.roblox.com/jobs/8129410
