{"id":18299975,"url":"https://github.com/chorusone/fastsync","last_synced_at":"2025-08-01T19:10:38.938Z","repository":{"id":250684868,"uuid":"753842470","full_name":"ChorusOne/fastsync","owner":"ChorusOne","description":"Send files between machines quickly by leveraging multiple TCP connections","archived":false,"fork":false,"pushed_at":"2025-07-27T11:43:30.000Z","size":61,"stargazers_count":7,"open_issues_count":4,"forks_count":0,"subscribers_count":10,"default_branch":"master","last_synced_at":"2025-07-27T13:05:32.772Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/ChorusOne.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2024-02-06T22:21:05.000Z","updated_at":"2025-05-16T13:34:11.000Z","dependencies_parsed_at":"2024-08-13T17:25:10.696Z","dependency_job_id":"d671a2ea-2513-439c-8059-223a054df5aa","html_url":"https://github.com/ChorusOne/fastsync","commit_stats":null,"previous_names":["chorusone/fastsync"],"tags_count":3,"template":false,"template_full_name":null,"purl":"pkg:github/ChorusOne/fastsync","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ChorusOne%2Ffastsync","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ChorusOne%2Ffastsync/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ChorusOne%2Ffastsync/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ChorusOne%2Ffastsync/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/ChorusOne","download_url":"https://codeload.github.com/ChorusOne/fastsync/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/ChorusOne%2Ffastsync/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":268282062,"owners_count":24225162,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","status":"online","status_checked_at":"2025-08-01T02:00:08.611Z","response_time":67,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-11-05T15:11:01.489Z","updated_at":"2025-08-01T19:10:38.924Z","avatar_url":"https://github.com/ChorusOne.png","language":"Rust","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Fastsync\n\nFastsync transfers files and/or directories between machines as fast as the\nnetwork allows. Tools that transfer files over a single TCP connection — what\n`rsync`, `scp`, and even raw `netcat` do — often fail to saturate the network\nlink. This is due to [head-of-line blocking][tcp-hol]. Opening multiple TCP\nconnections can bring a significant boost in transfer speed.\n\nFastsync targets the following use case:\n\n * **Linux only.** For now.\n * **Confidentiality and authentication are handled externally.** Fastsync does\n   not encrypt the files or authenticate the receiver. It assumes you are using\n   it over e.g. a Wireguard network interface.\n * **Compression is handled externally.** Fastsync does not compress the stream.\n   If the data volume benefits from compression, then compress the files ahead\n   of time with e.g. `lz4`, `brotli`, or `zstd`.\n * **A full transfer is necessary.** Fastsync always sends all files. If some\n   files are already present at the receiving side, or similar data is already\n   present, `rsync` might be a better fit.\n\n## Building\n\nFor your local machine:\n\n    cargo build --release\n    target/release/fastsync\n\nBuild a static binary that is more likely to be portable:\n\n    cargo build --release --target x86_64-unknown-linux-musl\n    ldd target/x86_64-unknown-linux-musl/release/fastsync\n\n## How to use\n\nSuppose the sender has Tailscale IP 100.71.154.83. Pick some available port,\nlike 4440 (assuming it's not bound to). Then on the sending end:\n\n    fastsync send 100.71.154.83:4440 file.tar.gz\n\nAlternatively if you want to send an entire directory, then you should something\nlike the command below. Please note that fastsync will not allow absolute paths:\n\n    cd /some/path/\n    fastsync send 100.71.154.83:4440 ./data\n\nOn the receiving end, suppose we download with 32 TCP connections:\n\n    cd /some/path\n    fastsync recv 100.71.154.83:4440 32\n\n## Known issues\n\n * It's too spammy.\n * Transfer time estimation can be improved.\n\n## License\n\nFastsync is licensed under the [Apache 2.0 License][apache2]. A copy of the\nlicense is included in the root of the repository.\n\n[apache2]: https://www.apache.org/licenses/LICENSE-2.0\n[tcp-hol]: https://github.com/rmarx/holblocking-blogpost/blob/a128994e32c134c5af6eb30120e321806cd6a4a3/README.md#tcp-hol-blocking\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fchorusone%2Ffastsync","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fchorusone%2Ffastsync","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fchorusone%2Ffastsync/lists"}