fvbock/endless
Endless
Endless es un wrapper de servidor y gestor de procesos sin tiempo de inactividad (zero-downtime) para servidores HTTP en Go. Reemplaza los listeners de la librería estándar para coordinar las transiciones de procesos y la gestión de sockets, permitiendo que los binarios se actualicen sin soltar las conexiones de red activas.
El proyecto permite reinicios sin tiempo de inactividad bifurcando un nuevo proceso hijo para hacerse cargo de los sockets de red antes de que el proceso padre se cierre. Gestiona el flujo de tráfico seguro envolviendo los servidores con capas de cifrado TLS y admite la coordinación tanto para puertos de red estándar como para sockets Unix.
El sistema maneja el ciclo de vida del servidor a través de la gestión basada en señales, ejecutando funciones específicas de configuración y limpieza durante los reinicios. Garantiza la disponibilidad continua mediante la coordinación de traspaso de sockets y proporciona mecanismos de apagado elegante que drenan las solicitudes activas o terminan las conexiones colgantes después de un período de gracia definido.
Features
- Zero-Downtime Upgrades - Provides a mechanism for updating service binaries without dropping active connections through socket handover.
- Zero-Downtime Binaries Upgrades - Replaces Go service binaries without dropping network connections by handing over sockets to a new process.
- Socket Handoffs - Transfers listening network ports between process instances to prevent dropping incoming requests during updates.
- Go Server Process Managers - Provides lifecycle control for Go applications, coordinating process transitions and monitoring system signals.
- Signal-Driven Process Spawning - Uses operating system signals to trigger the spawning of new process instances for seamless binary upgrades.
- System Signal Handling - Defines custom routines to handle operating system signals for application state management and cleanup.
- Binary Swaps - Enables updating server binaries by forking a new process to take over network sockets before the parent exits.
- HTTP Server Implementations - Provides a custom HTTP server listener implementation that manages system signals and graceful process handovers.
- Connection Termination - Force-terminates lingering network connections after a defined grace period during server shutdown.
- Graceful Shutdowns - Ensures clean termination of Go servers by allowing in-flight requests to complete within a grace period.
- Unix Socket Handoffs - Coordinates Unix socket transitions between parent and child processes to ensure continuous request handling.
- High Availability Server Networking - Ensures continuous service availability by running multiple server instances on different ports from a single binary.
- Multi-Port Listeners - Manages multiple server listeners on different ports within a single binary to facilitate coordinated restarts.
- Independent Server Instance Hosting - Supports running multiple independent server instances with distinct sockets from a single binary to coordinate restarts.
- TLS Servers - Implements a secure TLS server that maintains encrypted traffic flow during binary swaps and restarts.
- TLS Session Wrapping - Wraps standard HTTP servers with TLS encryption layers while preserving the ability to perform process rotations.
- Security & HTTPS - Manages TLS certificates and encryption protocols to maintain secure communication during seamless binary swaps.
- TLS Traffic Encryption - Secures communication channels using TLS certificates while maintaining stability during server restarts.
- Connection Draining - Implements network connection draining to allow active HTTP requests to finish before the server process terminates.
