Review on KairosDB by Paul Varnado

Easy to install, easy to use, very fast response times in querying datasets of millions of points with complex queries involving geospatial features or other custom fields like date ranges etc., great community support by way of IRC/Slack channels! There are some minor bugs still needing attention in v4 which was recently released. We were using it as an analytical tool within our business intelligence platform at D&O Global where we need rapid responses from multiple sources such as ETLs, BI tools & analysis services to give insights to users when they query their dashboards via APIs.