Langohr is a Clojure RabbitMQ client that embraces AMQP 0.9.1 Model.

With 1.0.1, Langohr is finally a 1.0 library, after 2 years in the making.

Time for 1.0

Langohr is the original ClojureWerkz library, started in late July 2011. It had quickly reached a point when it was useful enough. With the help of our users, there were 3-4 releases with breaking changes and major usability improvements.

Since 2013, Langohr has not changed much. It has decent documentation, has been in use by many people we know and supports every feature RabbitMQ 3.1 provides.

So while it is still missing a couple of hard to get right features, the 1.0 release has been long overdue. After all, some of much younger libraries are at 1.6 or 1.5 already.

1.0.1 is basically 1.0.0-beta14 with a different version and one typo fix.

Changes between Langohr 1.0.0-beta14 and 1.0.1

langohr.shutdown/sort-error? => langohr.shutdown/soft-error?

langohr.shutdown/soft-error? is now correctly named.

Contributed by Ralf Schmitt.

Getting Help

If you have any questions about Langohr, feel free to join our mailing list and rabbitmq-discuss or stop by #rabbitmq channel on

Plans for the Future

We are already working on a major feature for Langohr 1.1: automatic connection recovery, similar to what a couple of Ruby clients support. Features like this take a while to develop but the progress so far is promising.

We’ll keep you posted!

Change Log

Langohr change log is available on GitHub.

Langohr is a ClojureWerkz Project

Langohr is part of the group of libraries known as ClojureWerkz, together with

  • Elastisch, a minimalistic well documented Clojure client for ElasticSearch
  • Welle, a Riak client with batteries included
  • Monger, a Clojure MongoDB client for a more civilized age
  • Neocons, a client for the Neo4J REST API
  • Quartzite, a powerful scheduling library

and several others. If you like Langohr, you may also like our other projects.

Let us know what you think on Twitter or on the Clojure mailing list.

Michael on behalf of the ClojureWerkz Team