[jitsi-dev] Patterns & Quality Attributes Research


#1

Dear Jitsi Developers,

We are doing undergraduate research on software architecture patterns and
quality attributes for Utah Valley University. We recently analyzed the
work published on Jitsi 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 Jitsi with the current developers.

We would like to know if we are missing any patterns or quality attributes
that may have been included in Jitsi, 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)*

Plugin

We also identified the following quality attributes:

*Attribute Name*

*Is This Found in the Architecture?*

*Comments (optional)*

Usability

Performance

Portability

Maintainability

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 *architectural* patterns, 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 17, if possible.

Thank you for considering our request, and for your continued work on Jitsi.

Sincerely,

Erich Gubler,

Danielle Skinner,

Brandon Leishman,

Michael Skeen,

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