casync

casync
Original author(s) Lennart Poettering
Initial release June 20, 2017 (2017-06-20)
Stable release
1.0[1]
Repository github.com/systemd/casync/
Written in C
Operating system Linux
Type Data transfer
License LGPL 2.1
Website github.com/systemd/casync/

casync (content-addressable synchronisation) is a Linux software utility designed to distribute frequently-updated file system images over the Internet.[2][3]

Utility

According to the creator Lennart Poettering, casync is inspired by rsync and Git,[4] as well as tar.[5] casync is aimed to be used for Internet of things (IoT), container, virtual machine (VM), portable services, and operating system (OS) images, as well as backups and home directory synchronization.[3] casync splits images into variable size segments, uses sha256 checksums, and aims to work with content delivery networks (CDNs).[5][4] Available for Linux only,[4] packages are available for Ubuntu, Fedora and Arch Linux.[5]

Similar software

Similar software that delivers file system images are:[4]

  • Docker with a layered tarballs
  • OSTree

See also

References

  1. ↑ "casync: Content-Addressable Data Synchronization Tool". 23 June 2017 – via GitHub.
  2. ↑ "The casync filesystem image distribution tool [LWN.net]". lwn.net.
  3. 1 2 "Lennart Poettering Announces New Project: casync - Phoronix". Phoronix.
  4. 1 2 3 4 "casync — A tool for distributing file system images". 0pointer.net.
  5. 1 2 3 "Synchronisationsprogramm casync in erster Version - Pro-Linux". www.pro-linux.de.


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