Riak TS is a distributed NoSQL key/value store optimized for time series data. With TS, you can associate a number of data points with a specific point in time. TS uses discrete slices of time to co-locate data. For example, humidity and temperature readings from a meter reported during the same slice of time will be stored together on disk.
Riak TS uses tables defined according to a schema for each coherent group of data. This allows for both flexibility, in terms of collecting many different sets of data, and enough structure to make the experience of working with the collected data better.
Suppose you have a number of meters (for humidity and temperature) spread across the US. It would make sense to group your data by the state and meter number. You could even store data along multiple dimensions to ease querying.
Assuming we have a number of meters measuring humidity, temperature, and the general weather conditions, our table might look like:
CREATE TABLE RiakWeather ( region VARCHAR NOT NULL, state VARCHAR NOT NULL, meter_no VARCHAR NOT NULL, time TIMESTAMP NOT NULL, weather VARCHAR NOT NULL, temperature DOUBLE, humidity DOUBLE, PRIMARY KEY ( (region, state, QUANTUM(time, 15, 'm')), region, state, time ) )
Using this table we can map region, state and time (in 15 minute chunks) to weather condition, temperature, and humidity readings.
Supported Operating Systems
- CentOS 6
- CentOS 7
- RHEL 6
- RHEL 7
- Ubuntu 12.04
- Ubuntu 14.04
- Debian 7 & 8 (development only)
- OS X 10.8+ (development only)
LevelDB is the only supported backend.
If you want to learn more about how Riak TS was designed and how it is structured, checkout our Learn About Riak TS section.