Meta AI Open-Sources Rebalancer: A C++ Assignment Solver That Runs About 40 Million Placement Problems a Day

Meta has released its internal library, Rebalancer, as an open-source tool for managing server and traffic assignments. The software, which utilizes various optimization solvers, has processed approximately 40 million placement tasks daily within Meta's infrastructure for nearly a decade. By making this library available under an Apache 2.0 license, the company is providing developers and engineers with a tool designed to handle large-scale resource allocation and load balancing problems.