#### 13.10.1. RegionFactory

<div class="paragraph">

The hibernate-ehcache module defines two specific region factories: `EhCacheRegionFactory` and `SingletonEhCacheRegionFactory`.

</div>
<div class="sect4">

##### `EhCacheRegionFactory`

<div class="paragraph">

To use the `EhCacheRegionFactory`, you need to specify the following configuration property:

</div>
<div id="caching-provider-ehcache-region-factory-shared-example" class="exampleblock">
<div class="title">Example 334. `EhCacheRegionFactory` configuration</div>
<div class="content">
<div class="listingblock">
<div class="content">
<pre class="prettyprint highlight">`&lt;property
    name="hibernate.cache.region.factory_class"
    value="org.hibernate.cache.ehcache.EhCacheRegionFactory"/&gt;`</pre>
</div>
</div>
</div>
</div>
<div class="paragraph">

The `EhCacheRegionFactory` configures a `net.sf.ehcache.CacheManager` for each `SessionFactory`,
so the `CacheManager` is not shared among multiple `SessionFactory` instances in the same JVM.

</div>
</div>
<div class="sect4">

##### `SingletonEhCacheRegionFactory`

<div class="paragraph">

To use the `SingletonEhCacheRegionFactory`, you need to specify the following configuration property:

</div>
<div id="caching-provider-ehcache-region-factory-singleton-example" class="exampleblock">
<div class="title">Example 335. `SingletonEhCacheRegionFactory` configuration</div>
<div class="content">
<div class="listingblock">
<div class="content">
<pre class="prettyprint highlight">`&lt;property
    name="hibernate.cache.region.factory_class"
    value="org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory"/&gt;`</pre>
</div>
</div>
</div>
</div>
<div class="paragraph">

The `SingletonEhCacheRegionFactory` configures a singleton `net.sf.ehcache.CacheManager` (see [CacheManager#create()](http://www.ehcache.org/apidocs/2.8.4/net/sf/ehcache/CacheManager.html#create%28%29)),
shared among multiple `SessionFactory` instances in the same JVM.

</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">

</td>
<td class="content">
<div class="paragraph">

[Ehcache documentation](http://www.ehcache.org/documentation/2.8/integrations/hibernate#optional) recommends using multiple non-singleton `CacheManager(s)` when there are multiple Hibernate `SessionFactory` instances running in the same JVM.

</div>
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
<div class="sect2">