[erlang-questions] Supervisor tree width?

[Dmitry Kolesnikov]

I’ll be trivial to say that design of supervisor tree is an application specific. 

One lesson learned is that supervision it’s about the guarantees. Take a look into Fred’s post
http://ferd.ca/it-s-about-the-guarantees.html

Personally, I’am splitting an application to smaller functional units with own supervisors per unit. 
If an unit design needs 15 children then I see no issue to have them.
However, if 15 children do not have any relations each other then I am combining them to guaranty deterministic application state after failure. 

Best Regards, 
Dmitry

On 30 May 2014, at 14:28, Roger Lipscombe <roger@REDACTED> wrote:

> I'm concerned that the top-level supervisor in one of our applications
> has too many children. It has about 15 children, which are only
> vaguely related to each other.
> 
> What's a good rule-of-thumb for whether a supervisor tree is too wide?
> Or too deep? Or am I thinking on the wrong level here?
> 
> Thanks,
> Roger.
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