OpenNMS/newts

Newts is a time-series data store based on Apache Cassandra.High throughputNewts is built upon Apache Cassandra, a write-optimized, fully distributed partioned row store.Grouped accessIt's common to collect, store, and retrieve metrics together, (think bytes in and bytes out, or 1, 5, and 15 minute load averages.); Newts allows for similar metrics to be grouped together, for more efficient storage and retrieval.Late aggregationMost time-series solutions perform in-line aggregations for purposes of later ploting visualizations, even though the ratio of reads to write is staggeringly small. Newts performs plot aggregations at the time of the read.Searchable MetadataFully searchable sample resource metadata.More information can be found in the project Wiki, or the homepage.