Go TaskManager

NewCron returns a Timer that fires at according to a cron expression.All expresion supported by `https://github.com/gorhill/cronexpr` are supported.

NewFixed Returns Fixed Timer; A Timer that fires at a fixed duration intervals.

NewOnce Return a timer that trigger ONCE after `d` delay as soon as Timer is inquired for the next Run.Delay = 0 means the Timer return now(), aka as soon as time is inquired.

NewOnceTime Return a timer that trigger ONCE at `t` time.Time.If `t` is in the past at inquery time, timer will NOT run.

NewSchedule Create a new schedule for` jobFunc func()` that will run according to `timer Timer` with the supplied []Options.

NewScheduler Creates new Scheduler, opt Options are applied to *every* schedule added and created by this scheduler.

WithLogger Use the supplied Logger as the logger.

Cron A Timer that fires at according to a cron expression.All expresion supported by `https://github.com/gorhill/cronexpr` are supported.

Fixed A Timer that fires at a fixed duration intervals.

Once A timer that run ONCE after an optional specific delay.

Scheduler manage one or more Schedule creating them using common options, enforcing unique IDs, and supply methods to Start / Stop all schedule(s).

Task A Task is an object that wraps a Job (func(){}) and runs it on a schedule according to the supplied Timer; With the the ability to expose metrics, and write logs to indicate job health, state, and stats.

PreExecutionMiddleWare Interface for developing new Middleware Pre Executation Middleware is run before executing a job.

Option to customize schedule behavior, check the sched.With*() functions that implement Option interface for the available options.

Timer is an Interface for a Timer object that is used by a Schedule to determine when to run the next run of a job.