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Tasker is a ProcessWire module to support executing long-running jobs (e.g. performing operations on thousands of pages).

Tasker supports developers

• to run jobs in the background using cron or LazyCron
• to gracefully handle memory and execution time limits
• by providing a state-saving mechanism to store the task's progress

Its companion module Taskeradmin

• provides a step-by-step execution method via async HTTP calls
• allows to monitor the task's progress, helps to check log messages and task data
• allows manual state transitions (starting, killing, stopping, resuming etc. tasks)

In order to use Tasker you need the following

• implement a function that performs the long-running job
• create a task to call the function
• choose an execution method (scheduler): cron (preferred, tested), LazyCron (not really tested) or TaskerAdmin (tested)