Jawad Zaarour

  Design patterns are essential for writing maintainable and scalable software. They provide reusable solutions to common problems in software design and help you create more efficient, readable, and maintainable code. Categories of Design Patterns Design patterns can be categorized into three main categories: Creational Patterns:  These patterns deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. Examples include Singleton, Factory Method, and Builder. Structural Patterns:  These patterns focus on how objects are composed to form larger structures. Examples include Adapter, Facade, and Bridge. Behavioral Patterns:  These patterns are concerned with object collaboration and responsibilities. Examples include Observer, Strategy, and Command. Why Use Design Patterns? There are several reasons to use design patterns in your software development: Reusability: Design patterns promote reusability, which reduces redundant co...

  Overview RabbitMQ is an open-source message broker that plays a vital role in modern distributed systems and microservices architectures. It acts as a middleman, enabling communication between different components of an application or multiple applications. As a message broker, RabbitMQ facilitates the exchange of messages between sender and receiver nodes, promoting loose coupling and asynchronous communication. Developed using the Advanced Message Queuing Protocol (AMQP), RabbitMQ offers a robust and flexible solution for handling queues, ensuring that messages are delivered reliably and efficiently across various services and nodes. Its scalability, high availability, and support for multiple messaging patterns make it a popular choice for building decoupled, fault-tolerant, and scalable applications. In this short article, we will create a highly available RabbitMQ infrastructure by connecting to multiple RabbitMQ clusters. Click   here   for more details

Modern Java in Action: Lambdas, streams, functional and reactive programming This book is a valuable resource for developers who already know the basics of Java. It helps you improve your Java skills by teaching you about the latest features and techniques. You'll learn about things like the Streams API, the Java Module System, and new ways to handle concurrency. Plus, it shows you how functional programming can make your code easier to read and maintain. Here's a quick overview of each section of the book: Part 1 - Fundamentals: Covers the latest Java features from versions 8 to 11, including concepts like behavior parameterization and lambda expressions. Part 2 - Functional-Style Data Processing with Streams: Introduces the Streams API for functional-style data processing, explaining how to work with streams, collect data, and perform parallel data processing. Part 3 - Effective Programming with Streams and Lambdas: Teaches you how to use streams and lambdas effectively. ...

  Ferenc Krausz, Anne L’Huillier and Pierre Agostini (left to right). Credits: BBVA Foundation, Kenneth Ruona/Lund University, Ohio State University This year’s Nobel Prize in Physics has been awarded to three physicists — Pierre Agostini at Ohio State University, US, Ferenc Krausz at the Max Planck Institute of Quantum Optics in Garching, Germany, and Anne L’Huillier at Lund University, Sweden — for their research into attosecond pulses of light. Attosecond physics  allows scientists to look at the very smallest particles at the very shortest timescales (an attosecond is one-quintillionth of a second, or one-billionth of a nanosecond). The winners all developed experiments to be able to produce these ultrafast laser pulses, which can be used to probe our world at the smallest scales and have applications across chemistry, biology and physics. Click here for more details Source: Nature