Which is the setup with lowest resources you know Postgres is used in?

Hi all,

I'm regularly reading that Postgres is often used with containers and
in cloud environments these days, even on some not too powerful NAS.

What are the lowest resource setups you know of or even host Postgres
successfully with yourself? It's especially about RAM and CPU, if you
needed to e.g. configure anything special to make things somewhat work
in your stripped down environment etc.

Is there any point at which one is most likely forced to switch to
more specialized embedded databases like SQLite? E.g. because
Postgres requires a higher amount of resources because of it's
architecture? Or could Postgres in theory be used everywhere where
SQLite is used as well, as long as one is allowed to e.g. start an
additional process?

I would like to know if there's any realistic chance to use Postgres
in a low resources environment with little amount of RAM and somewhat
slow CPU like the following:

http://ww1.microchip.com/downloads/en/DeviceDoc/ATSAMA5D27-WLSOM1-Datasheet-60001590b.pdf
http://ww1.microchip.com/downloads/en/DeviceDoc/SAMA5D2-Series-Data-sheet-ds60001476F.pdf

One point is that I most likely need somewhat concurrent access to the
data, because of having web services exposing that data to clients,
daemons storing data locally only etc. OTOH, the number of concurrent
accessed won't be too high, there won't be too much load most of the
time. Things heavily depend on actual users of the device. Postgres'
architecture seems to better fit that use case than e.g. SQLite.

Thanks for sharing you experiences and suggestions!

Mit freundlichen Grüßen,

Thorsten Schöning

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