Re: big, fast, etc, was is Vax addressing sane today

Terje Mathisen <terje.mathisen@tmsw.no> schrieb:

10-15 years ago I talked to another speaker at a conference, he told me
that he was working on high-end open source LDAP software using _very_
large memory DBs: Their system allowed one US cell phone company to keep
every SIM card (~100M) on a single system, while a similar-size
competitor had been forced to fall back on 17-way sharding (presumably
using a hash of the SIM id).

Keeping databases in memory is definitely a thing now... see SAP HANA.

Any architectural implications for this?

Browsing through the SAP pages, it seems they used Intel's Optane
persistent memory, but that is no longer manufactured (?).  But
having fast, persistent storage is definitely an advantage for
databases.

Large memory: Of course.

On the ISA level... these databases run on x86, so that seems to
be good enough.

Anything else?