Back in December I whipped up a series of CouchDB plugins for the Scout monitoring service. The plugins allow you to track all sorts of metrics for CouchDB, including (but not limited to):

• Mean reads / second
• Mean writes / second
• Mean requests / second for DELETE, GET, HEAD, POST, and PUT requests
• Mean view requests / second
• Mean bulk HTTP requests / second
• Counts for various HTTP response codes

In addition, there is a plugin for individual CouchDB databases and individual couchdb-lucene indexes. The database plugin will report:

• Database size
• Number of documents
• Number of deleted documents
• Number of update operations

The couchdb-lucene plugin will report:

• Size of the index
• Number of documents indexed
• Number of deleted documents

The kind folks over at Scout have just released two new, official plugins based on the ones I created. The CouchDB Overall plugin combines some of the more important CouchDB metrics into a single plugin, and the CouchDB Database plugin reports the same set of the stats as the database plugin listed above.

The original plugins can be found at https://github.com/signal/scout-plugins/tree/master/couchdb. More information can be found here. I hope you find them useful.

Thanks to Doug Barth for some help on the plugins, and Derek over at Scout for putting together the official plugins.