nginx Architectural Patterns & Quality Attributes for Research

[Valery Kholodkov]

Pardon my meticulousness, but I would dispute your observation of 
Explicit Invocation in favor of Implicit Invocation.

Also, Virtual Machine pattern seems to be missing from your list.

I also would like to share my impression of your paper:

  - I think you need a more substantial body of knowledge.
  - You accepted a common architectural pattern taxonomy, that might 
introduce a bias into your study. Consider coming up with a taxonomy
that is more adequate to your study.

Best,
Val

On 18-10-16 00:21, Michael Skeen wrote:
> Hello nginx Community,
>
>
> I am part of an undergraduate research group focusing on software
> architecture patterns and quality attributes at Utah Valley University.
> We recently analyzed the work published on nginx in the Architecture of
> Open Source Applications <http://aosabook.org/en/index.html>(AOSA) and
> referenced it in a paper we presented at the 13th Working IEEE/IFIP
> Conference on Software Architecture (WICSA), as attached.  As a part of
> our continuing research we wish to validate our architectural analysis
> for nginx with the current developers.
>
>
> We would like to know if we are missing any patterns or quality
> attributes that may have been included in nginx, or if there are any we
> listed that aren’t used. Any additional comment on these topics you
> might have would also, of course, be welcome.
>
> *
> *
>
> We believe we found the following software architectural patterns in
> this application:
>
>
> *Pattern Name | Is This Found in the Architecture? (yes / no / don't
> know) | Comments (optional)*
>
> Event System Explicit Invocation Indirection Layer Layers Pipes & Filters
>
> Other?
>
>
> We also identified the following quality attributes:
>
>
> *Attribute Name | Is This Found in the Architecture? | Comments (optional)*
>
> Scalability Usability Extensibility Performance Maintainability
>
> Other?
>
>
> For your convenience, we have a complete list below of the patterns and
> quality attributes we referred to when conducting our research. To
> clarify, we are specifically studying architecturalpatterns, rather than
> design patterns such as the GoF patterns.
>
> *
> *
>
> Architectural Patterns Considered
>
> 	
> 	
>
> Quality Attributes Considered
>
> Active Repository
>
> 	
> 	
>
> Scalability
>
> Batch
>
> 	
> 	
>
> Usability
>
> Blackboard
>
> 	
> 	
>
> Extensibility
>
> Broker
>
> 	
> 	
>
> Performance
>
> Client Server
>
> 	
> 	
>
> Portability
>
> Event System
>
> 	
> 	
>
> Flexibility
>
> Explicit Invocation
>
> 	
> 	
>
> Reliability
>
> Implicit Invocation
>
> 	
> 	
>
> Maintainability
>
> Indirection Layer
>
> 	
> 	
>
> Security
>
> Interceptor
>
> 	
> 	
>
> Testability
>
> Interpreter
>
> 	
> 	
>
> Capacity
>
> Layers
>
> 	
> 	
>
> Cost
>
> Master and Commander
>
> 	
> 	
>
> Legality
>
> Microkernel
>
> 	
> 	
>
> Modularity
>
> Model View Controller
>
> 	
> 	
>
> Robustness
>
> Peer to Peer
>
> 	
> 	
>
> Pipes and Filters
>
> 	
> 	
>
> Plugin
>
> 	
> 	
>
> Presentation Abstraction Control
>
> 	
> 	
>
> Publish Subscribe
>
> 	
> 	
>
> Reflection
>
> 	
> 	
>
> Rule-Based System
>
> 	
> 	
>
> Shared Repository
>
> 	
> 	
>
> Simple Repository
>
> 	
> 	
>
> State Based
>
> 	
> 	
>
> Virtual Machine
>
> 	
> 	
>
> *
> *
>
> Please respond by October 25th, if possible.
>
> Thank you for considering our request, and for your continued work on nginx.
>
> *
> *
>
> Sincerely,
>
> *
> *
>
> Michael Skeen, with
>
> Erich Gubler,
>
> Danielle Skinner,
>
> Brandon Leishman,
>
> Neil Harrison, Ph.D. (advisor)
>
>
> Reference: Neil B. Harrison, Erich Gubler, Danielle Skinner, "Software
> Architecture Pattern Morphology in Open-Source Systems",WICSA, 2016,
> 2016 13th Working IEEE/IFIP Conference on Software Architecture (WICSA),
> 2016 13th Working IEEE/IFIP Conference on Software Architecture (WICSA)
> 2016, pp. 91-98, doi:10.1109/WICSA.2016.8
>
>
>
>
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