Time-series databases are of particular interest to me these days. Not only is VividCortex working with large-scale time-series data, but it’s a growing trend in the technology world in general. What’s perhaps most surprising is the dearth of native time-series databases, either commercial or opensource. The World is Time-Series The data we gather is increasingly timestamped and dealt with in time-series ways. For the last 10 years, I’ve worked with “roll-up” or “summary” tables almost constantly.