This document discusses software architecture and how it relates to code. It suggests that software architecture should be more accessible to developers and embodied in the code through architecturally evident coding styles. Components can be extracted from code if naming conventions, packaging, and other patterns are used. Both diagrams and code should reflect the architectural abstractions. Software architecture models can be maintained as code to keep them in sync with implementation changes.
Simon Brown is coming to the UK to teach his Software Architecture for Developers Workshop in April, so we asked him if he could give a free talk on software architecture for our community. Simon agreed to give a talk exploring the question "Architecture, where do you start?".
Software architecture for developers by Simon BrownCodemotion
The agile and software craftsmanship movements are pushing up the quality of the software systems we build, but there’s more we can do because even a small amount of software architecture can prevent many of the problems that projects still face, particularly if the team seems to be more chaotic than they are self-organising. Successful software projects aren’t just about good code and sometimes you need to step away from the IDE for a few moments to see the bigger picture. This session is about that bigger picture, software architecture, technical leadership and the balance with agility.
Software development is a very dynamic discipline, it can be very hype-driven at times. Technologies change all the time. For years, the pattern movement has successfully aimed at capturing the essence of what’s going on in the software development field in order to make sure wheels are not invented over and over again. Some patterns are very specialized, some are quite fundamental (such as the GoF patterns).
However, what are really the fundamentals of software development? Quicksort? Scheme? UML? What would you like all your developers in the team to really understand, what would you like to be the guiding principles of a curriculum of software engineering?
In this pattern language, I try to capture these principles. I will illustrate them with quite different, but usually contemporary and relevant technology examples. Some of the principles are implemented in languages, others in technologies, some in processes.
Software architecture and software design are two aspects of the same topic. Both are about how software is structured in order to perform its tasks. The term "software architecture" typically refers to the bigger structures of a software system, whereas "software design" typically refers to the smaller structures.
Simon Brown is coming to the UK to teach his Software Architecture for Developers Workshop in April, so we asked him if he could give a free talk on software architecture for our community. Simon agreed to give a talk exploring the question "Architecture, where do you start?".
Software architecture for developers by Simon BrownCodemotion
The agile and software craftsmanship movements are pushing up the quality of the software systems we build, but there’s more we can do because even a small amount of software architecture can prevent many of the problems that projects still face, particularly if the team seems to be more chaotic than they are self-organising. Successful software projects aren’t just about good code and sometimes you need to step away from the IDE for a few moments to see the bigger picture. This session is about that bigger picture, software architecture, technical leadership and the balance with agility.
Software development is a very dynamic discipline, it can be very hype-driven at times. Technologies change all the time. For years, the pattern movement has successfully aimed at capturing the essence of what’s going on in the software development field in order to make sure wheels are not invented over and over again. Some patterns are very specialized, some are quite fundamental (such as the GoF patterns).
However, what are really the fundamentals of software development? Quicksort? Scheme? UML? What would you like all your developers in the team to really understand, what would you like to be the guiding principles of a curriculum of software engineering?
In this pattern language, I try to capture these principles. I will illustrate them with quite different, but usually contemporary and relevant technology examples. Some of the principles are implemented in languages, others in technologies, some in processes.
Software architecture and software design are two aspects of the same topic. Both are about how software is structured in order to perform its tasks. The term "software architecture" typically refers to the bigger structures of a software system, whereas "software design" typically refers to the smaller structures.
In the last two decades, refactoring for code and design smells have received considerable focus from both academia and industry. This talk covers large scale refactoring for architectural smells which is gaining considerable attention from the software engineering community in the last few years. The main focus is on real-world case-studies and experiences in performing large scale refactoring for architectural smells from both industrial and open source projects. This talk will provide useful pointers to the participants on how to deal with refactoring for architectural smells in real-world contexts; further, it will also suggest research questions for the software engineering community to explore.
My take on the difference between software architecture and software design. Also highlights similarities between ISO/IEC/IEEE 42010-2011 (Systems and software engineering —Architecture description) and IEEE STD 1016-2009 (Systems Design — Software Design Descriptions)
This presentation is about a lecture I gave within the "Software systems and services" immigration course at the Gran Sasso Science Institute, L'Aquila (Italy): http://cs.gssi.infn.it/.
http://www.ivanomalavolta.com
A presentation on layered software architecture that goes through logical layering and physical layering, the difference between those two and a practical example.
Basics of Software Architecture for .NET DevelopersDan Douglas
Understanding what Software Architecture is and the benefits of a good architecture along with the implicit requirements that go along with it. The presentation then goes into detail about how the .NET framework can be leveraged as part of a great architecture.
Title: The Role of the Software Architect
Speaker: Hayim Makabee, co-founder of the Israeli Chapter of the International Association of Software Architects (IASA)
Abstract:
In this talk Hayim will present the practical aspects of the role of the Software Architect, including:
- The four areas of expertise: Design, Domain, Technology and Methodology.
- The cooperation with stakeholders: Developers, Team Leaders, Project Managers, QA and Technical Writers.
Understanding the expected areas of expertise is essential for the architect to develop his/her professional skills.
Understanding how to cooperate with the diverse stakeholders is essential to improve the architect's impact and effectiveness.
Composable Software Architecture with SpringSam Brannen
What does the architecture of a modern enterprise Java application look like? What have we as a community learned from our past? What does it mean to design a composable architecture? And how can Spring help developers meet the needs of enterprise applications in 2013 and beyond?
In this keynote presentation at Java Breeze, core Spring Framework committer Sam Brannen invites the audience to explore what it means to design, develop, and test modern enterprise Java applications following a composable software architecture model. Along the way, Sam will show how the Spring ecosystem and programming model fit into the larger picture of modern enterprise Java applications.
Transforming Software Architecture for the 21st Century (September 2009)Dion Hinchcliffe
Evolving an important theme I've been working on and presenting all year, this new deck summarizes how enterprise architecture and large scale technology-based business solutions must transform to be more effective in the 21st century.
Contains material on a hypothesis for what's wrong with today's EA as well as potential solutions of merit such as emergent architecture, WOA, enterprise REST, open supply chains (APIs), mashups, and other models.
Presented this week in Oslo Norway to Bouvet's enterprise architecture council.
This is an introductory lecture to Software Architecture, part of the Advanced Software Engineering course, at the University of L'Aquila, Italy (www.di.univaq.it/muccini/SE+/2012)
This slideshow walks through common and popular Architectural design patterns such as Data-Driven Architecture, Micro-Services, Layered Architecture, and Micro-Kernel Architecture. I also go over the pros and cons and in which scenario each architecture is preferable
[2015/2016] Introduction to software architectureIvano Malavolta
This presentation is about a lecture I gave within the "Software systems and services" immigration course at the Gran Sasso Science Institute, L'Aquila (Italy): http://cs.gssi.infn.it/.
http://www.ivanomalavolta.com
In the last two decades, refactoring for code and design smells have received considerable focus from both academia and industry. This talk covers large scale refactoring for architectural smells which is gaining considerable attention from the software engineering community in the last few years. The main focus is on real-world case-studies and experiences in performing large scale refactoring for architectural smells from both industrial and open source projects. This talk will provide useful pointers to the participants on how to deal with refactoring for architectural smells in real-world contexts; further, it will also suggest research questions for the software engineering community to explore.
My take on the difference between software architecture and software design. Also highlights similarities between ISO/IEC/IEEE 42010-2011 (Systems and software engineering —Architecture description) and IEEE STD 1016-2009 (Systems Design — Software Design Descriptions)
This presentation is about a lecture I gave within the "Software systems and services" immigration course at the Gran Sasso Science Institute, L'Aquila (Italy): http://cs.gssi.infn.it/.
http://www.ivanomalavolta.com
A presentation on layered software architecture that goes through logical layering and physical layering, the difference between those two and a practical example.
Basics of Software Architecture for .NET DevelopersDan Douglas
Understanding what Software Architecture is and the benefits of a good architecture along with the implicit requirements that go along with it. The presentation then goes into detail about how the .NET framework can be leveraged as part of a great architecture.
Title: The Role of the Software Architect
Speaker: Hayim Makabee, co-founder of the Israeli Chapter of the International Association of Software Architects (IASA)
Abstract:
In this talk Hayim will present the practical aspects of the role of the Software Architect, including:
- The four areas of expertise: Design, Domain, Technology and Methodology.
- The cooperation with stakeholders: Developers, Team Leaders, Project Managers, QA and Technical Writers.
Understanding the expected areas of expertise is essential for the architect to develop his/her professional skills.
Understanding how to cooperate with the diverse stakeholders is essential to improve the architect's impact and effectiveness.
Composable Software Architecture with SpringSam Brannen
What does the architecture of a modern enterprise Java application look like? What have we as a community learned from our past? What does it mean to design a composable architecture? And how can Spring help developers meet the needs of enterprise applications in 2013 and beyond?
In this keynote presentation at Java Breeze, core Spring Framework committer Sam Brannen invites the audience to explore what it means to design, develop, and test modern enterprise Java applications following a composable software architecture model. Along the way, Sam will show how the Spring ecosystem and programming model fit into the larger picture of modern enterprise Java applications.
Transforming Software Architecture for the 21st Century (September 2009)Dion Hinchcliffe
Evolving an important theme I've been working on and presenting all year, this new deck summarizes how enterprise architecture and large scale technology-based business solutions must transform to be more effective in the 21st century.
Contains material on a hypothesis for what's wrong with today's EA as well as potential solutions of merit such as emergent architecture, WOA, enterprise REST, open supply chains (APIs), mashups, and other models.
Presented this week in Oslo Norway to Bouvet's enterprise architecture council.
This is an introductory lecture to Software Architecture, part of the Advanced Software Engineering course, at the University of L'Aquila, Italy (www.di.univaq.it/muccini/SE+/2012)
This slideshow walks through common and popular Architectural design patterns such as Data-Driven Architecture, Micro-Services, Layered Architecture, and Micro-Kernel Architecture. I also go over the pros and cons and in which scenario each architecture is preferable
[2015/2016] Introduction to software architectureIvano Malavolta
This presentation is about a lecture I gave within the "Software systems and services" immigration course at the Gran Sasso Science Institute, L'Aquila (Italy): http://cs.gssi.infn.it/.
http://www.ivanomalavolta.com
Software Architecture - Principles Patterns and Practices - OSI Days Workshop...CodeOps Technologies LLP
Are you a developer or designer aspiring to become an architect? Do you want to learn about the architecture of open source applications? Do you want to learn software architecture through case studies and examples? If you have answered “yes” to any of these questions, this workshop is certainly for you. This workshop will introduce you to key topics in software architecture including architectural principles, constraints, non-functional requirements (NFRs), architectural styles and design patterns, viewpoints and perspectives, and architecture tools. A special feature of this workshop: it covers examples and case studies from open source applications. What’s more, you’ll also get exposed to some free or open source tools used by practicing software architects.
http://opensourceindia.in/osidays/workshops-osi-2016/
Software Architectural And Detailed Design Description TemplateArash Sharif
A comprehensive template for describing software architecture and detailed design. I wrote it based on the IEEE 1471 and IEEE 1016 specifications. Visit http://orphanware.blogspot.com/ for more technical reading.
Structured Approach to Solution ArchitectureAlan McSweeney
The role of solution architecture is to identify answer to a business problem and set of solution options and their components. There will be many potential solutions to a problem with varying degrees of suitability to the underlying business need. Solution options are derived from a combination of Solution Architecture Dimensions/Views which describe characteristics, features, qualities, requirements and Solution Design Factors, Limitations And Boundaries which delineate limitations. Use of structured approach can assist with solution design to create consistency. The TOGAF approach to enterprise architecture can be adapted to perform some of the analysis and design for elements of Solution Architecture Dimensions/Views.
Software Archtecture.
Software design is a process to transform user requirements into some suitable form, which helps the programmer in software coding and implementation.
Software design is the important step in SDLC (Software Design Life Cycle), which moves the concentration from problem domain to solution domain. It tries to specify how to fulfill the requirements mentioned in SRS.
Software design plays an important role in developing software: during software design, software engineers produce various models that form a kind of blueprint of the solution to be implemented
software design is very crusial thing to manage therfore software 'software design is very crusial thing to manage therfore software software design is very crusial thing to manage therfore software software design is very crusial thing to manage therfore software
Ask 5 Software Architects for a definition of Software Architecture and you'll get 10 definitions. However definition important to understand responsibilities, skills requirements and activities. Furthermore, separation of Software Architecture and Application Design has many practical benefits.
Chapter 7 Design Architecture and Methodology1.docxmccormicknadine86
Chapter 7:
Design: Architecture and Methodology
1
Design Topics Covered
Architectural vs. detailed design
“Common” architectural styles, tactics, and reference architectures
Basic techniques for detailed design
Basic issues with user-interface design
2
Design
Starts mostly from/with requirements (evolving mostly from functionalities and other non-functional characteristics).
How is the software solution going to be structured?
What are the main components—(functional comp)?
Often directly from requirements’ functionalities
(use cases).
How are these components related?
Possibly re-organize the components (composition/decomposition).
Two main levels of design:
Architectural (high level)
Detailed design
How should we depict design—notation/language?
3
Relationship between Architecture and Design
Detailed Design
Comes from
Requirements &
Architecture
4
Software Architecture
Structure(s) of the solution, comprising:
Major software elements
Their externally visible properties
Relationships among elements
Every software system has an architecture.
May have multiple structures!
Multiple ways of organizing elements, depending on the perspective
External properties of components (and modules)
Component (module) interfaces
Component (module) interactions, rather than internals of components and modules
5
Views and Viewpoints
View – representation of a system structure
4+1 views (by Krutchen)
Logical (OO decomposition – key abstractions)
Process (run-time, concurrency/distribution of functions)
Subsystem decomposition
Physical architecture
+1: use cases
Other classification (Bass, Clements, Kazman)
Module
Run-time
Allocation (mapping to development environment)
Different views for different people
6
Architectural Styles/Patterns
Pipes and filters
Event driven
Client-server
Model-view-controller (MVC)
Layered
Database centric
Three tier
We discuss architectural styles/patterns as
“reusable” starting point for design activities.
7
Pipe-Filter Architecture Style
The high-level design solution is decomposed into two “generic” parts (filters and pipes):
Filter is a service that transforms a stream of input data into a stream of output data.
Pipe is a mechanism or conduit through which the data flows from one filter to another.
Input
time cards
Prepare for
check processing
Process checks
Problems that require batch file processing seem to fit this architecture: e.g., payroll, compilers, month-end accounting.
** Reminds one of DFD without the data store or source sink.**
8
Event Driven (Real Time)
The high-level design solution is based on an event dispatcher, which manages events and the functionalities that depend on those events. These have the following characteristics:
Events may be a simple notification or may include associated data.
Events may be prioritized or be based on constraints such as time.
Events may require synchronous or asynchronous processing.
Events may be “registered” ...
[2015/2016] Software systems engineering PRINCIPLESIvano Malavolta
This presentation is about a lecture I gave within the "Software systems and services" immigration course at the Gran Sasso Science Institute, L'Aquila (Italy): http://cs.gssi.infn.it/.
http://www.ivanomalavolta.com
What are the prerequisites of a successful retrospective? What impediments should be analysed during this meeting? Does the goal of the retrospective influence its format? What are some retrospective formats and what kind of activities do they require for each step? These are some of the questions I will answer during this talk.
Expect a lot of examples which will generate insights on how to create custom retrospectives fit for your team.
Create Software Design with unit testing, build user experience with UX testing, check definition of done with functional testing – all these are my day-to-day activities. Indeed, I am a developer who has found the value of testing to deliver quality software.
In this presentation I share with you how I have come to use tests for: understanding the features, choosing the best user experience design, choosing the best technical solution, implementing the features and test them to create a reliable system.
You will see practical examples of how tools like Jasmine, Spock, Geb are used for the above types of tests. You will see a project with test code and we will discuss how testing can effectively enhance your professional performance.
Story mapping: build better products with a happier teamMozaic Works
Once you get it, story mapping is a simple yet very powerful technique. Use it to better define your product and find the weak spots where you need more customer info. Use it to plan and prioritize feature development and show progress to your stakeholders.
My presentation will mainly focus on the product owner’s perspective, but you can even use it to plan your vacation.
Adi Bolboacă: Architecture For Disaster Resistant Systems at I T.A.K.E. Unco...Mozaic Works
Aviation has learned how to deal with risks and we can learn from their experience in Software. This talk is about how to apply some of the Aviation concepts into Software Architecture.
TROUBLESHOOTING 9 TYPES OF OUTOFMEMORYERRORTier1 app
Even though at surface level ‘java.lang.OutOfMemoryError’ appears as one single error; underlyingly there are 9 types of OutOfMemoryError. Each type of OutOfMemoryError has different causes, diagnosis approaches and solutions. This session equips you with the knowledge, tools, and techniques needed to troubleshoot and conquer OutOfMemoryError in all its forms, ensuring smoother, more efficient Java applications.
In 2015, I used to write extensions for Joomla, WordPress, phpBB3, etc and I ...Juraj Vysvader
In 2015, I used to write extensions for Joomla, WordPress, phpBB3, etc and I didn't get rich from it but it did have 63K downloads (powered possible tens of thousands of websites).
Listen to the keynote address and hear about the latest developments from Rachana Ananthakrishnan and Ian Foster who review the updates to the Globus Platform and Service, and the relevance of Globus to the scientific community as an automation platform to accelerate scientific discovery.
Field Employee Tracking System| MiTrack App| Best Employee Tracking Solution|...informapgpstrackings
Keep tabs on your field staff effortlessly with Informap Technology Centre LLC. Real-time tracking, task assignment, and smart features for efficient management. Request a live demo today!
For more details, visit us : https://informapuae.com/field-staff-tracking/
Exploring Innovations in Data Repository Solutions - Insights from the U.S. G...Globus
The U.S. Geological Survey (USGS) has made substantial investments in meeting evolving scientific, technical, and policy driven demands on storing, managing, and delivering data. As these demands continue to grow in complexity and scale, the USGS must continue to explore innovative solutions to improve its management, curation, sharing, delivering, and preservation approaches for large-scale research data. Supporting these needs, the USGS has partnered with the University of Chicago-Globus to research and develop advanced repository components and workflows leveraging its current investment in Globus. The primary outcome of this partnership includes the development of a prototype enterprise repository, driven by USGS Data Release requirements, through exploration and implementation of the entire suite of the Globus platform offerings, including Globus Flow, Globus Auth, Globus Transfer, and Globus Search. This presentation will provide insights into this research partnership, introduce the unique requirements and challenges being addressed and provide relevant project progress.
Large Language Models and the End of ProgrammingMatt Welsh
Talk by Matt Welsh at Craft Conference 2024 on the impact that Large Language Models will have on the future of software development. In this talk, I discuss the ways in which LLMs will impact the software industry, from replacing human software developers with AI, to replacing conventional software with models that perform reasoning, computation, and problem-solving.
Experience our free, in-depth three-part Tendenci Platform Corporate Membership Management workshop series! In Session 1 on May 14th, 2024, we began with an Introduction and Setup, mastering the configuration of your Corporate Membership Module settings to establish membership types, applications, and more. Then, on May 16th, 2024, in Session 2, we focused on binding individual members to a Corporate Membership and Corporate Reps, teaching you how to add individual members and assign Corporate Representatives to manage dues, renewals, and associated members. Finally, on May 28th, 2024, in Session 3, we covered questions and concerns, addressing any queries or issues you may have.
For more Tendenci AMS events, check out www.tendenci.com/events
Innovating Inference - Remote Triggering of Large Language Models on HPC Clus...Globus
Large Language Models (LLMs) are currently the center of attention in the tech world, particularly for their potential to advance research. In this presentation, we'll explore a straightforward and effective method for quickly initiating inference runs on supercomputers using the vLLM tool with Globus Compute, specifically on the Polaris system at ALCF. We'll begin by briefly discussing the popularity and applications of LLMs in various fields. Following this, we will introduce the vLLM tool, and explain how it integrates with Globus Compute to efficiently manage LLM operations on Polaris. Attendees will learn the practical aspects of setting up and remotely triggering LLMs from local machines, focusing on ease of use and efficiency. This talk is ideal for researchers and practitioners looking to leverage the power of LLMs in their work, offering a clear guide to harnessing supercomputing resources for quick and effective LLM inference.
Strategies for Successful Data Migration Tools.pptxvarshanayak241
Data migration is a complex but essential task for organizations aiming to modernize their IT infrastructure and leverage new technologies. By understanding common challenges and implementing these strategies, businesses can achieve a successful migration with minimal disruption. Data Migration Tool like Ask On Data play a pivotal role in this journey, offering features that streamline the process, ensure data integrity, and maintain security. With the right approach and tools, organizations can turn the challenge of data migration into an opportunity for growth and innovation.
Check out the webinar slides to learn more about how XfilesPro transforms Salesforce document management by leveraging its world-class applications. For more details, please connect with sales@xfilespro.com
If you want to watch the on-demand webinar, please click here: https://www.xfilespro.com/webinars/salesforce-document-management-2-0-smarter-faster-better/
Prosigns: Transforming Business with Tailored Technology SolutionsProsigns
Unlocking Business Potential: Tailored Technology Solutions by Prosigns
Discover how Prosigns, a leading technology solutions provider, partners with businesses to drive innovation and success. Our presentation showcases our comprehensive range of services, including custom software development, web and mobile app development, AI & ML solutions, blockchain integration, DevOps services, and Microsoft Dynamics 365 support.
Custom Software Development: Prosigns specializes in creating bespoke software solutions that cater to your unique business needs. Our team of experts works closely with you to understand your requirements and deliver tailor-made software that enhances efficiency and drives growth.
Web and Mobile App Development: From responsive websites to intuitive mobile applications, Prosigns develops cutting-edge solutions that engage users and deliver seamless experiences across devices.
AI & ML Solutions: Harnessing the power of Artificial Intelligence and Machine Learning, Prosigns provides smart solutions that automate processes, provide valuable insights, and drive informed decision-making.
Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
Globus Compute wth IRI Workflows - GlobusWorld 2024Globus
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Accelerate Enterprise Software Engineering with PlatformlessWSO2
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Challenges of building platforms and the benefits of platformless.
Key principles of platformless, including API-first, cloud-native middleware, platform engineering, and developer experience.
How Choreo enables the platformless experience.
How key concepts like application architecture, domain-driven design, zero trust, and cell-based architecture are inherently a part of Choreo.
Demo of an end-to-end app built and deployed on Choreo.
Software Engineering, Software Consulting, Tech Lead.
Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
Spring Transaction, Spring MVC,
Log4j, REST/SOAP WEB-SERVICES.
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SOCRadar Research Team: Latest Activities of IntelBrokerSOCRadar
The European Union Agency for Law Enforcement Cooperation (Europol) has suffered an alleged data breach after a notorious threat actor claimed to have exfiltrated data from its systems. Infamous data leaker IntelBroker posted on the even more infamous BreachForums hacking forum, saying that Europol suffered a data breach this month.
The alleged breach affected Europol agencies CCSE, EC3, Europol Platform for Experts, Law Enforcement Forum, and SIRIUS. Infiltration of these entities can disrupt ongoing investigations and compromise sensitive intelligence shared among international law enforcement agencies.
However, this is neither the first nor the last activity of IntekBroker. We have compiled for you what happened in the last few days. To track such hacker activities on dark web sources like hacker forums, private Telegram channels, and other hidden platforms where cyber threats often originate, you can check SOCRadar’s Dark Web News.
Stay Informed on Threat Actors’ Activity on the Dark Web with SOCRadar!
14. It’s usually difficult to
show the entire design on
a single diagram
Different views of
the design can be used to
manage complexity and
highlight different
aspects of the solution
15. Software architecture deals with
abstraction, with decomposition and
composition, with style and esthetics.
To describe a software
architecture, we use a
model composed of multiple
views or perspectives.
Architectural Blueprints—The “4+1” View Model of Software Architecture
by Philippe Kruchten
16.
17. Do the names
of those views make sense?
Development vs Physical
Process vs Functional
Conceptual vs Logical
Development vs Implementation
Physical vs Implementation
Physical vs Deployment
34. Package by layer (horizontal slicing)
Presentation
layer
Business
layer
Data
layer
Controller BController A
Data Access
A
Data Access
B
Service BService A
35.
36.
37.
38.
39.
40. Package by layer (horizontal slicing)
Presentation
layer
Business
layer
Data
layer
Controller BController A
Data Access
A
Data Access
B
Service BService A
Controller C
Service C
Data Access
C
52. “This is a component
of our system”
says one developer to another,
pointing to a box on a diagram
labelled “Web Application”
53. A common set of
abstractions
is more important than
a common notation
54. Agree on a simple set of abstractions
that the whole team can use to communicate
Class Class Class
Component Component Component
Container
(e.g. web application, application server, standalone application,
browser, database, file system, etc)
Cont
(e.g. web application
browser, databas
ainer
file system, etc)
Software System
55. The C4 model
Classes
Component or pattern implementation details
System Context
The system plus users and system dependencies
Containers
The overall shape of the architecture and technology choices
Components
Logical components and their interactions within a container
56. Context
•What are we
building?
•Who is using it?
(users, actors, roles,
personas, etc)
•How does it fit into
the existing IT
environment?
(systems, services, etc)
57. Containers
•What are the high-
level technology
decisions? (including
responsibilities)
•How do containers
communicate with one
another?
•As a developer, where
do I need to write
code?
59. A notationless notation
(whiteboard and sticky note friendly,
supplemented with colour coding)
My Web Application
[Container: Apache Tomcat 7.x]
Here is a list of the key
responsibilities for my
web application.
60. Classes
Component or pattern
implementation details
System Context
The system plus users
and system dependencies
Containers
The overall shape of the architecture
and technology choices
Components
Logical components and their
interactions within a container
Overview
first
Zoom and
filter
Details
on demand
Shneiderman’s mantra
63. C4++Enterprise context
User interface mockups and wireframes
Domain model
Sequence and collaboration diagrams
Business process and workflow models
Infrastructure model
Deployment model
...
64. 4+1 architectural view model
Philippe Kruchten
Software Systems Architecture
Working with Stakeholders Using
Viewpoints and Perspectives (2nd Edition)
Nick Rozanski and Eoin Woods
75. How do we do this?
Can we extract the software architecture model
from the code?
How do we create living documentation?
What is the relationship between architecture,
coding and testing?
Will I talk about microservices?
Why is this important?
88. “In the early days of computing when computers
were slow, unit tests gave the developer more
immediate feedback about whether a change
broke the code instead of waiting for system tests
to run. Today, with cheaper and more powerful
computers, that argument is less persuasive.”
91. Instead of blindly unit testing
everything, what about
testing your significant
structural elements
as black boxes?
92. Do we need to rethink the testing pyramid?
UI and
functional
Integration
Unit
93. Architecturally-aligned testing
(and a reshaped testing pyramid)
Class Tests
Tests focused on individual classes and
methods, sometimes by mocking out
dependencies (typically referred to as
“unit” tests)
Component and Service Tests
Tests focused on components and services
through their public interface (often
referred to as “integration” tests)
System Tests
UI, API, functional and
acceptance tests
(“end-to-end” tests)
97. In practice, architecture is
embodied and recoverable
from code, and many
languages provide architecture-
level views of the system.
A Survey of Architecture Description Languages
by Paul C. Clements
98. Context
Software
Systems
Integration points, APIs,
known libraries, credentials
for inbound consumers, etc.
Containers
IDE projects/modules, build
output (code and
infrastructure), etc.
People
Security groups/roles in
configuration files, etc.
Components
Extractable from the code if
an architecturally-evident
coding style has been
adopted.
99. Containers
Software
Systems
Integration points, APIs,
known libraries, credentials
for inbound consumers, etc.
Containers
IDE projects/modules, build
output (code and
infrastructure), etc.
People
Security groups/roles in
configuration files, etc.
Components
Extractable from the code if
an architecturally-evident
coding style has been
adopted.
100. Components
Software
Systems
Integration points, APIs,
known libraries, credentials
for inbound consumers, etc.
Containers
IDE projects/modules, build
output (code and
infrastructure), etc.
People
Security groups/roles in
configuration files, etc.
Components
Extractable from the code if
an architecturally-evident
coding style has been
adopted.
101. Extract as much of the software
architecture from the code as possible,
and supplement
where necessary
119. If you can’t build a
structured
monolith,
what makes you think
microservices is the answer!?
120.
121. Well-defined, in-process components is a
stepping stone to out-of-process components
(i.e. microservices)
From components
to microservices
High cohesion
Low coupling
Focussed on a business capability
Bounded context or aggregate
Encapsulated data
Substitutable
Composable
<- All of that plus
Individually deployable
Individually upgradeable
Individually replaceable
Individually scalable
Heterogeneous technology stacks