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Feb 20, 2024 622 likes •926 views

Software Engineering I cs361 Announcements Review Github usage for Assignment 1 architectural patterns Cont Architectural Patterns MVC Layers Microservices Peer-to-Peer Pipe and Filter Service-Oriented architecture

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Software Engineering I cs361

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Announcements

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Review Github usage for Assignment 1

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architectural patterns Cont

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Architectural Patterns

✖ MVC ✖ Layers ✖ Microservices ✖ Peer-to-Peer ✖ Pipe and Filter ✖ Service-Oriented architecture ✖ Event-Driven Architecture ✖ Blackboard

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Layers

The Layers architectural pattern helps to structure applications that can be decomposed into groups of subtasks in which each group of subtasks is at a particular level of abstraction.

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Layers

Physical Data Link Network Application Session Presentation Application Physical Data Link Network Application Session Presentation Application

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Layers

Benefits: Makes reuse easier Makes individual layers interchangeable Layers interact clearly defined

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Layers

Drawbacks: Possibly less efficient then monolithic solution Layers sometimes introduce unnecessary work

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Microservices

A pattern where software systems provide minimal functional core which then can be expanded with extended functionality.

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Microservices

https://speakerdeck.com/rossbachp/wjax2014-docker-tomcat-microservices

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Microservices

http://techblog.netflix.com/2013/01/announcing-ribbon-tying-netflix-mid.html

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Microservices

Benefits: Strong Module Boundaries Independent deployment High diversity of technology

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Microservices

Drawbacks: Distribution adds complexity Eventual Consistency must be managed Higher operational complexity

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Peer-To-Peer

A group of peer nodes where every peer simultaneously functions as a client and a server

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Peer-To-Peer

Peer Peer Peer Peer Peer Peer

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Peer-To-Peer

Benefits All resource shared More reliable with no single point of failure Costs less to build and maintain the network

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Peer-To-Peer

Drawbacks Less Secure Hard to Backup No centralized authority

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Pipe and Filter

Provides a structure for systems that process a stream of data. Each step (filter) processes the data and passes is on to the next

step. Can be composed in any
rder.

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Pipe and Filter

cat input.txt | grep "text" | sort > output.txt

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Pipe and Filter

Scanner Parser Symantic Checker Bytecode Generator

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Pipe and Filter

Benefits Flexible behavior Filters can be reused Ease of debugging

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Pipe and Filter

Drawbacks Error handling can be difficult Cannot share state between filters

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Event Driven Architecture

An external change in state (event) causes the application to respond to the change in events. Built with component models with no direct connection with each other.

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Event Driven Architecture

http://infospheres.caltech.edu/sites/default/files/Event-Driven%20Applications%20-%20Costs,%20Benefits%20and%20Design%20Approaches.pdf

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Event Driven Architecture

Benefits: Broadcast Communications Asynchrony built in Events distributed in timeliness

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Event Driven Architecture

Drawbacks: Can be a little Brittle Different understanding of events can lead to problems

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Credits

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