tusd is a reference server implementation in Go of the tus protocol for resumable file uploads.
The tool addresses the problem of interrupted file uploads by implementing the tus protocol, which allows uploads to be paused and resumed without re-uploading previously transmitted data. This is particularly valuable when network interruptions, user pauses, or server outages occur. The protocol uses HTTP as its transport mechanism and specifies a flexible method for handling uploads of arbitrary size.
The server supports multiple storage backends including local disk, Google Cloud Storage, and AWS S3 or any S3-compatible storage system. Its modular and extensible architecture means that support for additional cloud providers can be added without major restructuring. This flexibility makes it suitable for projects that need resumable uploads across different infrastructure choices, from simple single-server deployments to cloud-native applications.
The project maintains active development with regular commits addressing bug fixes, feature enhancements, and protocol compliance. Pull requests receive timely review and feedback from maintainers. The codebase shows consistent attention to code quality and testing practices. Documentation is comprehensive and kept current alongside code changes.