Docs: update REST API wsgi scripts

[ltalirz]

fixes #4030

Open questions:

• The old documentation mentioned the possibility of running multiple wsgi scripts using the same daemon process (one.conf). Does this actually work / has it ever been used in production?

[codecov]

Codecov Report

Merging #4488 into develop will increase coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #4488      +/-   ##
===========================================
+ Coverage    79.31%   79.32%   +0.01%     
===========================================
  Files          475      475              
  Lines        34840    34840              
===========================================
+ Hits         27630    27632       +2     
+ Misses        7210     7208       -2     

Flag	Coverage Δ
#django	73.17% <ø> (+0.01%)	⬆️
#sqlalchemy	72.38% <ø> (-<0.01%)	⬇️

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Impacted Files	Coverage Δ
aiida/restapi/api.py	76.09% <ø> (ø)
aiida/restapi/run_api.py	90.70% <ø> (ø)
aiida/transports/plugins/local.py	82.83% <0.00%> (+0.26%)	⬆️
aiida/engine/daemon/runner.py	82.76% <0.00%> (+3.45%)	⬆️

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[giovannipizzi]

Thanks!

[giovannipizzi]

About your question:
The file was added by Fernando here:
8004ae7#diff-32fed9844368101395bbc050c45cf94e4ffbe93d96fd4bd648a3f5639e2cadc0

My guess is that he had actually tested it - but it's also true that it was a very old version of AiiDA so not even sure if this still works.
Do you think this might help us in Materials Cloud?
In this case it would be worth to investigate (or ask someone in the team to investigate)

[ltalirz]

Do you think this might help us in Materials Cloud?
In this case it would be worth to investigate (or ask someone in the team to investigate)

I didn't really know what the difference was, so I wasn't sure.

I've now had a quick look and I think it wouldn't really make a difference - even WSGI applications running inside the same process (group) will run in separate sub interpreters and thus lead to (practically) the same memory consumption.

There is, however, also the application group directive which lets wsgi applications run inside the same interpreter.
I don't think this would work with the current aiida (profile switching needed), but I've opened an issue to keep track of this possibility for the future #4494