Couchbase Server is a Key Value store and Document database. The combination of being able to store time series entries as KV pairs with the possibilities to aggregate data automatically in the background via Map-Reduce and the possibility to dynamically query the data via the query language N1QL makes Couchbase Server a perfect fit for time series management use cases.
Further details can be found here: http://nosqlgeek.blogspot.de/2016/08/time-series-data-management-with.html