Hi everyone,
I learned today that CERN uses PostgreSQL:
https://indico.cern.ch/event/1471762/contributions/6280212/attachments/2997951/5282078/Optimizing%20Time%20Series%20Data%20Storage%20for%20CERN%20Industrial%20Control%20Systems%20using%20TimescaleDB%20and%20PostgreSQL.pdf
Just wanted to share this link.
-- Best regards,Aleksander Alekseev