apoc.periodic.countdown
Procedure

This procedure is not intended to be used in a cluster environment, and may act unpredictably. It continues to execute against the same database that it was initiated on, meaning that in a cluster environment, it only executes on the leader. If there is a leader switch then the procedure may error and stop running.

Details
Syntax	`apoc.periodic.countdown(name, statement, delay) :: (name, delay, rate, done, cancelled)`
Description	Runs a repeatedly called background statement until it returns 0.
Input arguments	Name	Type	Description
	`name`	`STRING`	The name of the job.
	`statement`	`STRING`	The Cypher statement to run, returning a count on each run indicating the remaining iterations.
	`delay`	`INTEGER`	The delay in seconds to wait between each job execution.
Return arguments	Name	Type	Description
	`name`	`STRING`	The name of the job.
	`delay`	`INTEGER`	The delay on the job.
	`rate`	`INTEGER`	The rate of the job.
	`done`	`BOOLEAN`	If the job has completed.
	`cancelled`	`BOOLEAN`	If the job has been cancelled.

Usage Examples

The examples in this section are based on the following sample graph:

CREATE (:Counter {value: 10000});

The following decrements the value once a second until it gets to 0:

CALL apoc.periodic.countdown(
  "decrement",
  "MATCH (counter:Counter)
   SET counter.value = counter.value - 1
   RETURN counter.value as count",
  1);