One Year of Clean Architecture - The Good, The Bad and The BobOCTO Technology
Après des heures de visionnage de ce sacré tonton, et conscients qu’évidemment, "there is a better way", il était temps de passer à la version supérieure du MVP. C’est ce que nous avons fait, en mettant en place différentes interprétations de la Clean Architecture sur nos missions, sur des applications existantes comme sur du from-scratch.
Nous sommes partis des postulats d’Uncle Bob : avoir une architecture indépendante des frameworks, de l’UI, des back-ends et des BDD. Et par dessus tout : testable. Pour une fois, nous n’avons pas mis la stack technique au centre de notre choix d’architecture. Car comme il le dit si bien, un bon architecte est quelqu’un qui retarde au plus tard les choix des outils. Nous nous sommes concentrés sur les règles métier. En pur java. En pur KOTLIN. Sans librairies.
Ce modèle a révolutionné notre manière de concevoir une application chez nos différents clients (BNP, SNCF, Meetic…). Nous allons vous partager nos fiertés, nos douleurs et les questions qui restent encore ouvertes.
A walkthrough the main principles to reach solid NodeJS Applications with TypeScript language, Jest as Test Runner and NestJS as framework for structure.
4Developers 2018: Evolution of C++ Class Design (Mariusz Łapiński)PROIDEA
Since the beginnings of C++, classes are the basic building block of any self-respecting application. The combination of data and its relevant functionality heavily impacts the way we modularize the program, design APIs, construct and reuse the code - think of software in general.
In the previous era, C++ was a hammer for every nail, providing secure high-level abstractions without sacrifice of the superior performance. Yet during the past decades, competing technologies dethroned it out of many domains. As the language evolved to prevail its principal advantages, so did the way classes are programmed.
I am pleased to invite you to a speech about code construction and programming techniques used in programs and libraries now and then. Expect a lot of code samples!
One Year of Clean Architecture - The Good, The Bad and The BobOCTO Technology
Après des heures de visionnage de ce sacré tonton, et conscients qu’évidemment, "there is a better way", il était temps de passer à la version supérieure du MVP. C’est ce que nous avons fait, en mettant en place différentes interprétations de la Clean Architecture sur nos missions, sur des applications existantes comme sur du from-scratch.
Nous sommes partis des postulats d’Uncle Bob : avoir une architecture indépendante des frameworks, de l’UI, des back-ends et des BDD. Et par dessus tout : testable. Pour une fois, nous n’avons pas mis la stack technique au centre de notre choix d’architecture. Car comme il le dit si bien, un bon architecte est quelqu’un qui retarde au plus tard les choix des outils. Nous nous sommes concentrés sur les règles métier. En pur java. En pur KOTLIN. Sans librairies.
Ce modèle a révolutionné notre manière de concevoir une application chez nos différents clients (BNP, SNCF, Meetic…). Nous allons vous partager nos fiertés, nos douleurs et les questions qui restent encore ouvertes.
A walkthrough the main principles to reach solid NodeJS Applications with TypeScript language, Jest as Test Runner and NestJS as framework for structure.
4Developers 2018: Evolution of C++ Class Design (Mariusz Łapiński)PROIDEA
Since the beginnings of C++, classes are the basic building block of any self-respecting application. The combination of data and its relevant functionality heavily impacts the way we modularize the program, design APIs, construct and reuse the code - think of software in general.
In the previous era, C++ was a hammer for every nail, providing secure high-level abstractions without sacrifice of the superior performance. Yet during the past decades, competing technologies dethroned it out of many domains. As the language evolved to prevail its principal advantages, so did the way classes are programmed.
I am pleased to invite you to a speech about code construction and programming techniques used in programs and libraries now and then. Expect a lot of code samples!
В этом докладе я хочу рассказать о том, что Obj-C/C++ — это расширение существующих C/C++. В данном докладе будут рассмотрены особенности языка, будет рассказано про управление памятью (retain/release vs. ARC vs. shared_ptr/unique_ptr), про Swift и почему он лучше или хуже Obj-C/C++.
Software should be perfect, but it isn't! Bugs in the software ranges from small "inoffensive ones" to the ones that makes the news when a bunch of credit card data is stole.
On this talk we will review different testing methodologies and tools, and we will focus on using PHPUnit to assert how your software works and how to exterminate your bugs.
Checking the Cross-Platform Framework Cocos2d-xAndrey Karpov
Cocos2d is an open source software framework. It can be used to build games, apps and other cross-platform GUI based interactive programs. Cocos2d contains many branches with the best known being Cocos2d-Swift, Cocos2d-x, Cocos2d-html5 and Cocos2d-XNA.
In this article, we are going to discuss results of the check of Cocos2d-x, the framework for C++, done by PVS-Studio 5.18. The project is pretty high-quality, but there are still some issues to consider. The source code was downloaded from GitHub.
Cracking JWT tokens: a tale of magic, Node.JS and parallel computingLuciano Mammino
Learn how you can use some JavaScript/Node.js black magic to crack JWT tokens and impersonate other users or escalate privileges. Just add a pinch of ZeroMQ, a dose of parallel computing, a 4 leaf clover, mix everything applying some brute force and you'll get a powerful JWT cracking potion!
Of complicacy of programming, or won't C# save us?PVS-Studio
Programming is hard. I hope no one would argue that. But the topic of new programming languages, or more exactly, search of a "silver bullet" is always highly popular with software developers. The most "trendy" topic currently is superiority of one programming language over the other. For instance, C# is "cooler" than C++. Although holy wars are not the reason why I'm writing this post, still it is a "sore subject" for me. Oh, come on, C#/lisp/F#/Haskell/... won't let you write a smart application that would interact with the outer world and that's all. All the elegance will disappear as soon as you decide to write some real soft and not a sample "in itself".
Droidcon Berlin 2021 - With coroutines being the de facto way of exposing async work and streams of changes for Kotlin on Android, developers are obviously attempting to use the same approaches when moving their code to Multiplatform.
But due to the way the memory model differs between JVM and Kotlin Native, it can be a painful experience.
In this talk, we will take a deep dive into the Coroutine API for Kotlin Multiplatform. You will learn how to expose your API with Coroutines while working with the Kotlin Native memory model instead of against it, and avoid the dragons along the way.
В этом докладе я хочу рассказать о том, что Obj-C/C++ — это расширение существующих C/C++. В данном докладе будут рассмотрены особенности языка, будет рассказано про управление памятью (retain/release vs. ARC vs. shared_ptr/unique_ptr), про Swift и почему он лучше или хуже Obj-C/C++.
Software should be perfect, but it isn't! Bugs in the software ranges from small "inoffensive ones" to the ones that makes the news when a bunch of credit card data is stole.
On this talk we will review different testing methodologies and tools, and we will focus on using PHPUnit to assert how your software works and how to exterminate your bugs.
Checking the Cross-Platform Framework Cocos2d-xAndrey Karpov
Cocos2d is an open source software framework. It can be used to build games, apps and other cross-platform GUI based interactive programs. Cocos2d contains many branches with the best known being Cocos2d-Swift, Cocos2d-x, Cocos2d-html5 and Cocos2d-XNA.
In this article, we are going to discuss results of the check of Cocos2d-x, the framework for C++, done by PVS-Studio 5.18. The project is pretty high-quality, but there are still some issues to consider. The source code was downloaded from GitHub.
Cracking JWT tokens: a tale of magic, Node.JS and parallel computingLuciano Mammino
Learn how you can use some JavaScript/Node.js black magic to crack JWT tokens and impersonate other users or escalate privileges. Just add a pinch of ZeroMQ, a dose of parallel computing, a 4 leaf clover, mix everything applying some brute force and you'll get a powerful JWT cracking potion!
Of complicacy of programming, or won't C# save us?PVS-Studio
Programming is hard. I hope no one would argue that. But the topic of new programming languages, or more exactly, search of a "silver bullet" is always highly popular with software developers. The most "trendy" topic currently is superiority of one programming language over the other. For instance, C# is "cooler" than C++. Although holy wars are not the reason why I'm writing this post, still it is a "sore subject" for me. Oh, come on, C#/lisp/F#/Haskell/... won't let you write a smart application that would interact with the outer world and that's all. All the elegance will disappear as soon as you decide to write some real soft and not a sample "in itself".
Droidcon Berlin 2021 - With coroutines being the de facto way of exposing async work and streams of changes for Kotlin on Android, developers are obviously attempting to use the same approaches when moving their code to Multiplatform.
But due to the way the memory model differs between JVM and Kotlin Native, it can be a painful experience.
In this talk, we will take a deep dive into the Coroutine API for Kotlin Multiplatform. You will learn how to expose your API with Coroutines while working with the Kotlin Native memory model instead of against it, and avoid the dragons along the way.
Azul Virtual Machine Engineer Douglas Hawkins describes how decisions made by the JVM affect how your code is compiled and run. Learn how this affects application performance and what steps you can take to optimize how the JVM acts on your code.
Integration testing is hard, and often teams are tempted to do it in production. Testcontainers allows writing meaningful integration tests spawning Docker containers for databases, queue systems, kv-store, other services. The talk, a blend of slides and live code, will show how we are able to deploy without fear while integrating with a dozen of different datastores. Don't mock your database with fake data anymore, work with real data
Singletons in PHP - Why they are bad and how you can eliminate them from your...go_oh
While Singletons have become a Pattern-Non-Grata over the years, you still find it surprisingly often in PHP applications and frameworks. This talk will explain what the Singleton pattern is, how it works in PHP and why you should avoid it in your application.
JVM Mechanics: When Does the JVM JIT & Deoptimize?Doug Hawkins
HotSpot promises to do the "right" thing for us by identifying our hot code and compiling "just-in-time", but how does HotSpot make those decisions?
This presentation aims to detail how HotSpot makes those decisions and how it corrects its mistakes through a series of demos that you run yourself.
The Developer Conference - CloudKit, entendendo a Cloud da AppleRodrigo Leite
In this lecture that I presented in the TDC, I will explain a brief experience using the framework CloudKit.
The problems found and the solutions to solve them.
Le temps est révolu où Java EE ne serait qu’à développer des applications de mise à jour de données, avec JSF / EJB / JPA. Aujourd’hui Java EE s’est assoupli et s’est ouvert sur le monde, avec CDI comme clé de voûte et a repoussé nos limites grâce à des capacités d’extension puissantes et faciles d’utilisation comme JCA.
Dans un premier temps, nous reviendrons rapidement sur la place de CDI dans JavaEE 7 et sur ses mécanismes d’extension. Dans un deuxième temps, nous verrons les techniques de connecteurs JCA et comment ils peuvent aussi constituer une possibilité d’ouverture simple à mettre en œuvre. JCA fournit des techniques pour gérer des connexions sortantes ou entrantes, sur des formats ou protocoles variés.
Part I of a presentation on Advanced Concepts in JavaScript. Cover topics like: objects, functions, closures, inheritance, new platform features, and much more.
Read more: http://luisatencio.net
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdfPeter Spielvogel
Building better applications for business users with SAP Fiori.
• What is SAP Fiori and why it matters to you
• How a better user experience drives measurable business benefits
• How to get started with SAP Fiori today
• How SAP Fiori elements accelerates application development
• How SAP Build Code includes SAP Fiori tools and other generative artificial intelligence capabilities
• How SAP Fiori paves the way for using AI in SAP apps
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
7. Lock contention example public synchronized void setProperty(Object newValue) { // A value = newValue; notifyPropertyChange(); } private void notifyPropertyChange() { synchronized(listeners) {// B for (IListener listener : listeners) listener.changed(); // C } }
8. Lock contention example public void setProperty(Object newValue) { synchronized(this) {// A value = newValue; } notifyPropertyChange(); } private void notifyPropertyChange() { synchronized(listeners) {// B for (IListener listener : listeners) listener.changed(); // C } }
9. Lock contention example public void setProperty(Object newValue) { synchronized(this) {// A value = newValue; } notifyPropertyChange(); } private void notifyPropertyChange() { IListener[] tmp; synchronized(listeners) {// B tmp = listeners.clone(); } for (IListener listener : tmp) listener.changed(); // C }
10. Deadlock preventer Shortcut to launch application with lock monitor agent activated Detects Inconsistent locking order while acquiring locks between all threads in JVM Extracts lock statistics for tuning lock contention
11. Deadlock preventer - Automation Adding the Deadlock preventer is as simple as adding the following two arguments to the “java” executable: -javaagent:path-toom.freescale.deadlockPreventer.wrapper_1.0.0om.freescale.deadlockpreventer.jar -Xbootclasspath/a:path-toom.freescale.deadlockPreventer.wrapper_1.0.0om.freescale.deadlockpreventer.jar;path-toavassist.wrapper_1.0.0avassist.jar By default just prints all inconsistent locks to console output. There’s a server version listening for the deadlock preventer monitor events
12. References Author blog http://sergebeauchamp.blogspot.com/ GitHub https://github.com/sbeauchamp/Deadlock-Preventer