 workers is defined in 
<a href="#code/src/main/java/sample/cluster/transformation/TransformationFrontend.java" class="shortcut">TransformationFrontend.java</a>
</p>

<p>
Note that the <code>TransformationFrontend</code> actor watch the registered backend
to be able to remove it from its list of available backend workers.
Death watch uses the cluster failure detector for nodes in the cluster, i.e. it detects
network failures and JVM crashes, in addition to graceful termination of watched
actor.
</p>

<p>
To