Monger, a modern Clojure MongoDB Driver
Monger is an idiomatic Clojure MongoDB driver for a more civilized age.
It has batteries included, offers powerful expressive query DSL, strives to support every MongoDB 2.0+ feature and has sane defaults. Monger is built from the ground up for Clojure 1.3+ and sits on top of the official MongoDB Java driver.
There is one MongoDB client for Clojure that has been around since 2009. So, why create another one? Monger authors wanted a client that will
- Support most of MongoDB 2.0+ features, focus on those that really matter.
- Be well documented.
- Be well tested.
- Target Clojure 1.3.0 and later from the ground up.
- Be as close to the Mongo shell query language as practical
- Integrate with libraries like Joda Time, Cheshire, clojure.data.json, Ragtime.
- Support URI connections to be friendly to Heroku and other PaaS providers.
- Not carry technical debt from 2009 forever.
Monger has a mailing list. Feel free to join it and ask any questions you may have.
To subscribe for announcements of releases, important changes and so on, please follow @ClojureWerkz on Twitter.
Monger is not a young project: started in July 2011, it is over 1 year old with active production use from week 1.
Monger artifacts are released to Clojars. If you are using Maven, add the following repository
definition to your
<repository> <id>clojars.org</id> <url>http://clojars.org/repo</url> </repository>
The Most Recent Release
<dependency> <groupId>com.novemberain</groupId> <artifactId>monger</artifactId> <version>1.4.1</version> </dependency>
Documentation & Examples
Our test suite also has many code examples.
Supported Clojure versions
Monger is built from the ground up for Clojure 1.3 and up. Clojure 1.4 is recommended.
Continuous Integration Status
Monger Is a ClojureWerkz Project
Monger insert operations are efficient and have very little overhead compared to the underlying Java driver. Here are some (very unscientific) numbers on a MacBook Pro from fall 2010 with Core i7 and an Intel SSD drive:
Testing monger.test.stress Inserting 1000 documents... "Elapsed time: 25.699 msecs" Inserting 10000 documents... "Elapsed time: 135.069 msecs" Inserting 100000 documents... "Elapsed time: 515.969 msecs"
SAFE write concern, it takes roughly 0.5 second to insert 100,000 documents with Clojure 1.3.0.
Monger uses Leiningen 2. Make sure you have it installed and then run tests against supported Clojure versions using
lein2 all test
Then create a branch and make your changes on it. Once you are done with your changes and all tests pass, submit a pull request on Github.
Copyright (C) 2011-2012 Michael S. Klishin
Distributed under the Eclipse Public License, the same as Clojure.