overseer

overseer is a Go-based library designed to enable self-upgrading and gracefully restarting applications without downtime, making it particularly useful for long-running services and production systems. It provides a mechanism for monitoring a running binary and seamlessly replacing it with a newer version while preserving active connections and minimizing service interruption. The project is built with reliability in mind, allowing developers to implement zero-downtime deployments in their applications without relying on external orchestration tools. Overseer works by spawning and managing child processes, coordinating upgrades in a controlled manner to ensure stability. It also supports version management and rollback strategies, giving developers greater control over application lifecycle and deployment safety. The library integrates directly into Go applications, making it easy to embed upgrade logic without complex infrastructure changes.