Cron-library is obsolete. Lib-scheduler replaces its functionality (and adds a bunch of new features and improvements). Lib-scheduler however requires XP >= 7.7
Not so fast…
lib-cron may still useful in some cases.
lib-scheduler has only 1 minute granularity at best. lib-cron can schedule with sub-second precision.
lib-scheduler can only execute named tasks, lib-cron can run any code.
lib-scheduler is designed to run task "somewhere in the cluster and exclusively on one node. lib-cron runs everywhere and may clean, for instance, XP node local caches periodically