growing database category for a cause Everything event based can be stored as timeseries to observe and analyze change Timeseries have unique challenges that can’t be solved by relational databases The challenge starts at the edge • Collecting, storing, and indexing the data is a challenge in itself because of the volume of data per device (jet engines Paris to NYC: 200 TB) • You need operational intelligence before the data is in the datacenter Most of the data is “uninteresting” but you don’t know which part • The database needs to handle write heavy scenarios • Requires powerful indexing and compression technology 80,00 90,00 100,00 110,00 120,00 130,00 140,00 150,00 160,00 170,00 mai-18 juil-18 sept-18 nov-18 janv-19 mars-19 mai-19 Popularity Changes ©2019, DB-Engines.com Time Series DBMS Graph DBMS Key-value stores Native XML DBMS Wide column stores Multivalue DBMS Relational DBMS RDF stores Search engines Document stores Object oriented DBMS Timeseries have specific querying needs • ASOF joins – Merge two different timeseries into one • Resampling – Aggregate a high frequency timeseries into a lower frequency timeseries • Trimming – Remove quickly “old data”