---
layout: docs
title: Scheduling rules engine
header: Scheduling rules engine
prev_section: user-guide/managing-rules
next_section: user-guide/embedding-rules-engine
doc: true
---
Easy Rules provides APIs to schedule a rules engine using the popular Java scheduler < a href = "http://www.quartz-scheduler.org" target = "_blank" > Quartz< / a > .
To schedule a rules engine instance, first you need to add the following dependency to your **_pom.xml_** :
```xml
< dependency >
< groupId > org.easyrules< / groupId >
< artifactId > easyrules-quartz< / artifactId >
< version > {{site.version}}< / version >
< / dependency >
```
Then, you can create a `RulesEngineScheduler` as follows:
```java
RulesEngine rulesEngine = aNewRulesEngine().build();
Date now = new Date();
int everySecond = 1;
RulesEngineScheduler scheduler = RulesEngineScheduler.getInstance();
scheduler.scheduleAtWithInterval(rulesEngine, now, everySecond);
```
This will schedule the rules engine to start now and repeat every second.
The `RulesEngineScheduler` API provides methods to schedule a rules engine:
* At a fixed point of time using `scheduleAt(RulesEngine engine, Date when)`
* Repeatedly with a predefined interval using `scheduleAtWithInterval(RulesEngine engine, Date when, int interval)`
* Using unix cron-like expression with `scheduleCron(RulesEngine engine, String cronExpression)`
To unregister a rules engine, use the following snippet:
```java
scheduler.unschedule(rulesEngine);
```
You can find a tutorial about scheduling rules engine in the [time tutorial ]({{site.url}}/tutorials/scheduling-engine.html ).
