gosu

gosu

gosu (go supervisor) is a work-in-progress process supervisor for production microservices, supporting extended features such as application monitoring, logging, and error management. It's designed as an alternative to PM2, offering a familiar yet improved experience for managing your applications, written in Go for enhanced performance and lower resource consumption.

Features

In addition to the core features of PM2, gosu offers a number of improvements and new features.

• Lightweight and Fast: Leveraging the efficiency of Go, gosu is designed for minimal memory footprint and quick execution.
• Easy Configuration: Simple and flexible configuration options via .json, .yaml, .toml, .js or .ts files.
• Application Monitoring: Real-time monitoring of application performance and resource usage.
• Scaling: Effortlessly scale your applications across multiple instances with automatic load balancing, failover and scaling using Unix domain sockets or Named Pipes.
• Compatibility: Fully compatible with Node.js environments, making it easy to migrate from PM2.
• Logging and Error Management: Advanced logging features for better debugging and error tracking.
• Remote admin: Manage your applications remotely using the gosu CLI.
• Task queues: Manage task queues and background jobs with ease.
• Build aware: Not only does gosu restart your application when a file changes, it also rebuilds your application if you're using a build tool such as Vite.
• Cross server messaging: Easily communicate between applications running on different servers using the gosu IPC channel.
• Work pipelines: Easily create pipelines of work to be executed in parallel or in sequence with retry and error handling.

Installation

go install github.com/can1357/gosu@latest

Usage

(Documentation TBD)

Start a job:

gosu launch "run node app.js" --id=app_name --n=2 # Launch 2 instances of the application, no language specific features.
gosu launch "ts ./app.ts" --id=app_name  # Typescript support via auto tsx/ts-node discovery in the NPM repository.
gosu launch "@./config.js" --id=myserver # Creates a job named myserver as specified in the config file.
gosu launch "..." --launch="boot" # Launch the job on boot.
gosu launch "..." --launch="on:event" # Launch the job when an event is signalled via `gosu signal event`.

List all running applications:

gosu ls
gosu view "app-.*" # Real-time view of all applications matching the regex.

Stop an application:

gosu stop app_name

Configuration

(Documentation TBD)

// config.js
export default {
	ts: {
		exec: "./myserver.ts",
		n: 4,
		proxy: {
			host: "localhost:3000",
			listen: ":3000",
			sticky: true,
			method: "conn",
			retry_max: 5,
			retry_backoff: 100,
		},
	},
};

Contributing

Contributions to gosu are welcome! Please read our CONTRIBUTING.md for guidelines on how to contribute.

License

gosu is licensed under the BSD 3-Clause License. See LICENSE for the full license text.