This 30-minute video explains the history of non-volatile RAM,
specifically 3D XPoint, Optane, and CXL, and how hard it is to
re-architect software to use it when DRAM and NAND performance continues
to improve:
https://www.youtube.com/watch?v=A2BsmrnegrY
This is obviously relevant because databases like quick access to
non-volatile storage. In summary, the technology never hit critical
mass and is being deemphasized.
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com
Do not let urgent matters crowd out time for investment in the future.