frotate.rs | frotate stands for functional rotate

frotate.rs is a Rust library. frotate.rs has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitLab, GitHub.

frotate stands for "functional rotate", whatever. This is an evolution of the [log2rotate’s ideas] See also [pylog2rotate] frotate is designed to rotate backups with any balance between retention and space usage. Instead of rotating backups using some familiar method such as daily, weekly, monthly, and yearly periods, it rotates backups using any periods. Thus "functional". The idea is simple, the rotation schedule is determined by an integer function. This function gives us a period (number) of days when we must encounter at least one backup or whatever we are rotating. When we use an exponential function, the scheme is similar to the radioactive decay law. When the function is simply a constant 1, we don’t rotate anything and retain all the backups. If it is 2, we retain each second backup. With some trivial function we can achieve a well-known dayly-weekly-monthly-yearly scheme. The frotate command line utility implements only exponential periods with arbitrary base (ensure it is > 1, or have fun otherwise).