b
</a></li><li><a href="#g:11">Exceptions and Error Handling
</a></li><li><a href="#g:12">Useful Types and Helpers
</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>This module provides the <em>basic</em> patterns
 client/server, publish and subscribe and pusher/worker
 (a.k.a. pipeline) as well as a <em>registry</em>,
 a means to support patterns
 where one application uses or serves a set of other applications. 
</p><p>Basic patterns can be distinguished by th