How can we quickly tell what an application is about? How can we quickly tell what it does? How can we distinguish business concepts from architecture clutter? How can we quickly find the code we want to change? How can we instinctively know where to add code for new features? Purely looking at unit tests is either not possible or too painful. Looking at higher-level tests can take a long time and still not give us the answers we need. For years, we have all struggled to design and structure projects that reflect the business domain.
In this talk Sandro will be sharing how he designed the last application he worked on, twisting a few concepts from Domain-Driven Design, properly applying MVC, borrowing concepts from CQRS, and structuring packages in non-conventional ways. Sandro will also be touching on SOLID principles, Agile incremental design, modularisation, and testing. By iteratively modifying the project structure to better model the product requirements, he has come up with a design style that helps developers create maintainable and domain-oriented software.
This workshop focuses on domain driven design and how to achieve it effectively. It also focus on bridging gaps while gathering requirements from business stakeholders using event storming workshops.
استفاده از دادههای تجربی برای پشتیبانی از انتخاب فناوری در تصمیمگیری معماری...S. M. Masoud Sadrnezhaad
استفاده از خرد جمعی معماران نرمافزار از طریق کاویدن مخازن پروژههای نرمافزارهای معتبر آزاد/متنباز، یکی از حوزههای پژوهشی است که در سالهای اخیر با استقبال بیشتری روبرو شدهاست. با توجه به رویش روزافزون فناوریهای در دسترس، انتخاب فناوریهای مناسب از میان آنها به یکی از چالشهای پیشروی معماران نرمافزار تبدیل شدهاست. سامانهٔ توصیهگر راهکاری مناسب برای پشتیبانی از معمار در انتخاب فناوری است. پژوهشهای صورتگرفته در این حوزه از طیف وسیعی از روشهای یادگیری ماشین برای ساخت این سامانهها استفاده کردند ولی تأثیر کیفیت و اندازهٔ پروژههای استفاده شده مورد مطالعه قرار نگرفتهاست. همچنین دقت پیشنهادهایشان با توجه به پیشرفتهای اخیر در الگوریتمهای یادگیری عمیق چندان مناسب نیست و به مشکل شروع سرد مبتلا هستند. این پژوهش پس از استخراج دادهٔ کیفیت پروژهها، با توسعهٔ دو سامانهٔ توصیهگر مبتنی بر یادگیری عمیق به نام DeepLibAide و مبتنی بر محتوا به نام ContentLibAide و توصیهگر تلفیقی با هدف حل مشکل شروع سرد، به مقایسهٔ نتایج اجرای آنها روی نمونههای مختلف از کیفیت پروژهها میپردازد. مقایسهٔ نتایج DeepLibAide نشان میدهد که به واسطهٔ استفاده از تابع فعالساز خطی، حذف تبدیل ویژگیها و جمع زدن بردارهای جاساز لایهها، نتایج ارزیابی مدل طراحی شده در فراسنجهای مختلف، نسبت به روش پایه در معیارهای دقت، بازیابی و سود انباشتهٔ کاهشیافتهٔ نرمالشده و ضرر آزمون بهبود یافتهاست. دقت و بازیابی آموزش مدل توسط دادگان بزرگتر، دادگان حاوی فقط پروژههای باکیفیتتر و انتخاب تصادفی پروژهها مقایسه شدهاست. DeepLibAide نسبت به روش پایه بهطور میانگین هفت درصد در معیار بازیابی بهبود یافته. معماری خطلولهٔ طراحیشده از ابتدای استخراج یا بهروزرسانی دادگان ورودی و ساخت نمونهها تا مرحلهٔ آموزش مدلها با فراسنجهای مختلف و ذخیرهسازی پیشنهادها و ارزیابی و مقایسهٔ آنها با روش پایه در نمودارهای مختلف طوری طراحی شدهاست که کل برنامه بهطور خودکار و با حداقل نیاز به دستکاری اجرا شود.
How can we quickly tell what an application is about? How can we quickly tell what it does? How can we distinguish business concepts from architecture clutter? How can we quickly find the code we want to change? How can we instinctively know where to add code for new features? Purely looking at unit tests is either not possible or too painful. Looking at higher-level tests can take a long time and still not give us the answers we need. For years, we have all struggled to design and structure projects that reflect the business domain.
In this talk Sandro will be sharing how he designed the last application he worked on, twisting a few concepts from Domain-Driven Design, properly applying MVC, borrowing concepts from CQRS, and structuring packages in non-conventional ways. Sandro will also be touching on SOLID principles, Agile incremental design, modularisation, and testing. By iteratively modifying the project structure to better model the product requirements, he has come up with a design style that helps developers create maintainable and domain-oriented software.
This workshop focuses on domain driven design and how to achieve it effectively. It also focus on bridging gaps while gathering requirements from business stakeholders using event storming workshops.
استفاده از دادههای تجربی برای پشتیبانی از انتخاب فناوری در تصمیمگیری معماری...S. M. Masoud Sadrnezhaad
استفاده از خرد جمعی معماران نرمافزار از طریق کاویدن مخازن پروژههای نرمافزارهای معتبر آزاد/متنباز، یکی از حوزههای پژوهشی است که در سالهای اخیر با استقبال بیشتری روبرو شدهاست. با توجه به رویش روزافزون فناوریهای در دسترس، انتخاب فناوریهای مناسب از میان آنها به یکی از چالشهای پیشروی معماران نرمافزار تبدیل شدهاست. سامانهٔ توصیهگر راهکاری مناسب برای پشتیبانی از معمار در انتخاب فناوری است. پژوهشهای صورتگرفته در این حوزه از طیف وسیعی از روشهای یادگیری ماشین برای ساخت این سامانهها استفاده کردند ولی تأثیر کیفیت و اندازهٔ پروژههای استفاده شده مورد مطالعه قرار نگرفتهاست. همچنین دقت پیشنهادهایشان با توجه به پیشرفتهای اخیر در الگوریتمهای یادگیری عمیق چندان مناسب نیست و به مشکل شروع سرد مبتلا هستند. این پژوهش پس از استخراج دادهٔ کیفیت پروژهها، با توسعهٔ دو سامانهٔ توصیهگر مبتنی بر یادگیری عمیق به نام DeepLibAide و مبتنی بر محتوا به نام ContentLibAide و توصیهگر تلفیقی با هدف حل مشکل شروع سرد، به مقایسهٔ نتایج اجرای آنها روی نمونههای مختلف از کیفیت پروژهها میپردازد. مقایسهٔ نتایج DeepLibAide نشان میدهد که به واسطهٔ استفاده از تابع فعالساز خطی، حذف تبدیل ویژگیها و جمع زدن بردارهای جاساز لایهها، نتایج ارزیابی مدل طراحی شده در فراسنجهای مختلف، نسبت به روش پایه در معیارهای دقت، بازیابی و سود انباشتهٔ کاهشیافتهٔ نرمالشده و ضرر آزمون بهبود یافتهاست. دقت و بازیابی آموزش مدل توسط دادگان بزرگتر، دادگان حاوی فقط پروژههای باکیفیتتر و انتخاب تصادفی پروژهها مقایسه شدهاست. DeepLibAide نسبت به روش پایه بهطور میانگین هفت درصد در معیار بازیابی بهبود یافته. معماری خطلولهٔ طراحیشده از ابتدای استخراج یا بهروزرسانی دادگان ورودی و ساخت نمونهها تا مرحلهٔ آموزش مدلها با فراسنجهای مختلف و ذخیرهسازی پیشنهادها و ارزیابی و مقایسهٔ آنها با روش پایه در نمودارهای مختلف طوری طراحی شدهاست که کل برنامه بهطور خودکار و با حداقل نیاز به دستکاری اجرا شود.
در این ارائه ابتدا به برخی مباحث پیشرفتهتر دربارهٔ سیستم کنترل ورژن گیت پرداخته شده است. این ارائه در کلاس تحلیل و طراحی سیستمهای دانشکده کامپیوتر دانشگاه صنعتی شریف در تاریخ ۳۱ اردیبهشت ۱۳۹۶ ارائه شده است.
در این ارائه ابتدا به معرفی سامانههای کنترل ورژن پرداخته شد و پس از توضیح مفاهیم کنترل ورژن به آموزش شیوه استفاده از گیت پرداخته شده است. فیلم این کارگاه در سایت جشنواره روز آزادی نرمافزار سال ۹۴ در تهران به نشانی sfd.fsug.ir/1394 قرار گرفته است.
در این ارائه سعی شده ابتدا به صورت اجمالی وضع کنونی، اهداف و دستاوردهای دولت در استفاده، ترویج و توسعهٔ نرمافزار آزاد در ایران تحلیل شود. در "شناخت جایگاه دولت و جامعه در حمایت از نرمافزار آزاد" این اهداف با واقعیت مقایسه شده و در نهایت "راهکار پیشنهادی" نوشته شده است.
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* How to run your own data quality framework
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* How to run the test cases in your own ETL pipelines
* How the Incident Manager is integrated
* Get notified with alerts when test cases fail
Watch the meeting recording here - https://www.youtube.com/watch?v=UbNOje0kf6E
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Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
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in learning programming -- could variable roles help deep neural models in
performing coding tasks? We do an exploratory study.
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We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
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2. Table of contents
When to apply the Façade
pattern in software design?
Classes, Instances, States,
SOLID Principles
Exploring the concept and
purpose of façade pattern.
How clients interact with the
Façade and some codes.
Visual representation of the
pattern's structural diagram
Abstract Factory, Mediator,
Singleton
01
04
02
05
03
06
Object-Oriented Introduction Diagrams
Applicability Sample Code Related Patterns
10. Design Patterns
Design Patterns
● Best practices for software development
recurring design problems
● Includes problem descriptions, solutions, and
application guidelines.
● Provide implementation hints and examples.
● Illustrate class and object relationships.
Goal of Design Patterns
● Understand the problem and matching it with
some pattern
● Making the present design reusable for the
future usage
● Speed up development with proven
approaches.
11. As the name façade suggests, it means
"the face of the building."
12. Façade Pattern
Analogy
● A glass face of a building hides its complexities from passersby.
● Similarly, the facade design pattern conceals system complexities.
● The facade pattern uses a single class with simplified methods for client interaction.
● It delegates calls to existing system class methods.
● When placing a phone order, the operator serves as a facade.
● The operator offers a simple voice interface to shop services, payment, and delivery.
● Bank sample
Pronunciation is /fəˈsɑːd/
A part of Gang of Four
design patterns (23 others).
It comes under the
“Structural” category.
17. ● Facade pattern simplifies access to complex
subsystems.
● Subsystems tend to become more complex over
time, leading to smaller classes.
● Facade pattern enhances subsystem reusability
and customization but can complicate things for
non-customizing clients.
● Facades provide a default view for most clients,
allowing customization for those who need it.
● Facades separate subsystems from clients and
other subsystems, promoting independence and
portability.
● Use facades as entry points for subsystems to
simplify interactions between dependent
subsystems.
Applicability
18. ● Facade simplifies client-subsystem interactions.
● Promotes loose coupling between subsystem
and clients, allowing changes without impacting
clients.
● Helps manage complex dependencies and
circular relationships in a system.
● Reduces compilation dependencies in large
software systems, saving time when making
changes.
● Eases porting to other platforms by minimizing
dependencies.
● Doesn't prevent direct use of subsystem classes
when needed, providing flexibility for clients.
Consequences
20. Sample Code
from __future__ import annotations
class Facade:
"""
The Facade class provides a simple interface to the complex logic of one or
several subsystems. The Facade delegates the client requests to the
appropriate objects within the subsystem. The Facade is also responsible for
managing their lifecycle. All of this shields the client from the undesired
complexity of the subsystem.
"""
def __init__(self, subsystem1: Subsystem1, subsystem2: Subsystem2) -> None:
"""
Depending on your application's needs, you can provide the Facade with
existing subsystem objects or force the Facade to create them on its
own.
"""
self._subsystem1 = subsystem1 or Subsystem1()
self._subsystem2 = subsystem2 or Subsystem2()
21. Sample Code (Contd)
class Facade:
def operation(self) -> str:
"""
The Facade's methods are convenient shortcuts to the sophisticated
functionality of the subsystems. However, clients get only to a fraction
of a subsystem's capabilities.
"""
results = []
results.append("Facade initializes subsystems:" )
results.append(self._subsystem1.operation1())
results.append(self._subsystem2.operation1())
results.append("Facade orders subsystems to perform the action:" )
results.append(self._subsystem1.operation_n())
results.append(self._subsystem2.operation_z())
return "n".join(results)
22. Sample Code (Contd)
class Subsystem1:
"""
The Subsystem can accept requests either from the facade or client directly.
In any case, to the Subsystem, the Facade is yet another client, and it's
not a part of the Subsystem.
"""
def operation1(self) -> str:
return "Subsystem1: Ready!"
# ...
def operation_n (self) -> str:
return "Subsystem1: Go!"
23. Sample Code (Contd)
class Subsystem2:
"""
Some facades can work with multiple subsystems at the same time.
"""
def operation1(self) -> str:
return "Subsystem2: Get ready!"
# ...
def operation_z (self) -> str:
return "Subsystem2: Fire!"
24. Sample Code (Contd)
def client_code (facade: Facade) -> None:
"""
The client code works with complex subsystems through a simple interface
provided by the Facade. When a facade manages the lifecycle of the
subsystem, the client might not even know about the existence of the
subsystem. This approach lets you keep the complexity under control.
"""
print(facade.operation(), end="")
if __name__ == "__main__":
# The client code may have some of the subsystem's objects already created.
# In this case, it might be worthwhile to initialize the Facade with these
# objects instead of letting the Facade create new instances.
subsystem1 = Subsystem1()
subsystem2 = Subsystem2()
facade = Facade(subsystem1, subsystem2)
client_code(facade)
25. Sample Code Output
Facade initializes subsystems:
Subsystem1: Ready!
Subsystem2: Get ready!
Facade orders subsystems to perform the action:
Subsystem1: Go!
Subsystem2: Fire!
27. Related Patterns
Abstract Factory
● Work with Facade to create subsystem objects uniformly
and independently from the subsystem.
● Abstract Factory can also replace Facade to hide
platform-specific classes.
Mediator.
● Abstracts existing class functionality, but it centralizes
communication between colleague objects, keeping
functionality out of them
● colleagues communicate with the mediator, not directly with
each other, while in Facade, it simplifies subsystem object
interfaces but doesn't introduce new functionality.
Singleton
● T
ypically, only one Facade object is needed, often
implemented as a Singleton.
28. Resources
● Gamma, E., Helm, R., Johnson, R., Vlissides, J. and Patterns, D., 1995.
Elements of Reusable Object-Oriented Software. Design Patterns.
● https://refactoring.guru/design-patterns
● https://medium.com/backticks-tildes/the-s-o-l-i-d-principles-in-pic
tures-b34ce2f1e898
29. Thanks :)
Do you have any questions?
masoud@hbc.ir
smm.sadrn.com