How Modal powered 250,000 Lovable app creations in a weekend

This post details how Lovable leveraged Modal's Sandboxed Code Execution capabilities to handle a massive promotional weekend event, successfully powering an estimated 250,000 application creations in 48 hours. Modal ran over 1 million sandboxes, with up to 20,000 concurrent sandboxes at peak, without any operational incidents for Lovable's platform team. The post highlights the reduction in orchestration code from 15,000 lines to 700 lines by using Modal's Tunnels for secure, low-latency communication between sandboxes and backend services. Lovable plans to further leverage Modal Sandbox capabilities like snapshotting for end-user performance gains.