Time Series Databases edit 
Our list of and information on commercial, open source and cloud based time series databases and associated technologies, including OpenTSDB, Druid, InfluxDB, MachBase and alternatives to these Databases optimised for storing very large numbers of metrics and allowing these to be aggregated and analysed. Metrics are usually organised by measurements or metric names and one or more tags (e.g. to represent a server or instance). Many implement their own data storage layers, however many also run over external databases, typically NoSQL Wide Column Stores. Use cases traditionally focus on monitoring infrastructure and applications or more recently IoT use cases, but analytics over any timestamped data is fair game. DB Engines maintain a list of time series databases along with their current popularity: https://db-engines.com/en/ranking/time+series+dbms From Steven Acreman on the Outlyer blog, a review of Time Series Databases from August 2016, some interesting thoughts, and a detailed analysis Google spreadsheet: https://blog.outlyer.com/top10-open-source-time-series-databases The following stacks support monitoring infrastructure and applications, with connectors to import metrics from a number of sources: If you’re looking for a time series database to handle monitoring and management of infrastructure and applications, there are also a number of cloud based services you could consider:Category Definition
Further Information
Open Source over external data stores
OpenTSDB Time Series DB that runs over Apache HBase KairosDB Fork of OpenTSDB that runs over Apache Cassandra - https://kairosdb.github.io/ Chronix Time Series DB that runs over Apache Solr - http://www.chronix.io/ Heroic Time Series DB from Spotify based on Bigtable/Cassandra, and Elasticsearch - https://github.com/spotify/heroic Blueflood Time Series DB over Cassandra from Rackspace - http://blueflood.io/ Warp 10 Geo Time Series DB that also geo co-ordinates and/or elevation alongside timestamps that runs over HBase and Kafka - http://www.warp10.io/ Newts Time Series DB over Cassandra - http://opennms.github.io/newts/ Open Source using custom storage
RRDtool Open source data logging and graphing for time series data, originally created in 1999 - https://oss.oetiker.ch/rrdtool/ Druid Runs over HDFS/S3 and supports real time aggregations of streaming data DalmatinerDB High performance Time Series DB written in Erlang and based on Riak Core that runs over ZFS - https://dalmatiner.io/ Apache IoTDB Time series database focusing on IoT use cases - https://iotdb.apache.org/ Beringei In memory Time Series DB from Facebook - https://github.com/facebookincubator/beringei Atlas In memory Time Series DB from Netflix - https://github.com/Netflix/atlas/wiki/Overview SiriDB Open source Time Series DB - http://siridb.net/ Akumuli C++ Time Series DB that can be used as an embedded library - http://akumuli.org/ Gnocchi Open source Time Series DB that was spun off from the OpenStack Ceilometer project - http://gnocchi.xyz/ Commercial Open Source
InfluxDB Implemented in Go, with commercial and cloud versions also available Axibase Time Series DB built on HDFS, with a commercial Enterprise edition available - https://axibase.com/ Riak TS Time Series DB built on the core of Riak KV, and available in a number of commercial editions - http://basho.com/products/riak-ts/ TimescaleDB Plugin to PostgreSQL to add time series data storage - https://www.timescale.com/ RedisTimeSeries Add on module to Redis to add support for time series data - https://oss.redislabs.com/redistimeseries Commercial Closed Source
MachBase Commercial Time Series DB previously known as InfiniFlux - http://www.infiniflux.com/machbase/ KDB+ Time Series DB from KX Systems that used heavily in financial organisations - https://kx.com/discover/#time-series-database Cloud Services
Azure Time Series Insights Storage, analytics and visualisation service for time series data - https://azure.microsoft.com/en-us/services/time-series-insights/ Monitoring Stacks (open source)
Graphite Three tier stack consisting of Whisper (simple time series database, graphite-web (a graph/dashboard UI) and Carbon (for ingestion of data)- https://graphiteapp.org/ Prometheus Open source monitoring solution that includes a time series database and alerting; part of the Cloud Native Computing Foundation - https://prometheus.io/ Hawkular Open source monitoring solution over Cassandra with alerting and visualisation capabilities, backed by RedHat - http://www.hawkular.org/ NetData Local in memory metrics dashboards for monitoring servers and applications, with the ability to forward metrics to downstream time series dbs - https://my-netdata.io/ Icinga Commercial support available - https://www.icinga.com/ Monitoring Stacks (as a service)
AWS CloudWatch Collects and tracks metrics for AWS services, with support for custom metrics - https://aws.amazon.com/cloudwatch/ Outlyer https://www.outlyer.com/ VMWare Wavefront https://www.wavefront.com/ VividCortex Specialist database performance metrics monitoring - https://www.vividcortex.com/ SignalFX https://signalfx.com Circonus Also available for installation on premises - https://www.circonus.com Datadog Available for free for up to 5 hosts - https://www.datadoghq.com/ Librato https://www.librato.com/ ServerDensity https://www.serverdensity.com/ IoT Stacks
TempoIQ Commercial IoT collection, storage and analytics service - https://www.tempoiq.com/ SiteWhere Commercial open source IoT platform built over MongoDB/HBase/InfluxDB - http://www.sitewhere.org/ / http://www.sitewhere.com/ Blog Posts