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AWS	AWS Security Blog	Migrating your secrets to AWS Secrets Manager, Part 2: Implementation	https://aws.amazon.com/blogs/security/migrating-your-secrets-to-aws-secrets-manager-part-2-implementation/	Migrating your secrets to AWS Secrets Manager Part ImplementationIn Part of this series we provided guidance on how to discover and classify secrets and design a migration solution for customers who plan to migrate secrets to AWS Secrets Manager We also mentioned steps that you can take to enable preventative and detective controls for Secrets Manager In this post we discuss how …	2023-07-21 16:44:32
AWS	AWS Security Blog	Migrating your secrets to AWS Secrets Manager, Part I: Discovery and design	https://aws.amazon.com/blogs/security/migrating-your-secrets-to-aws-secrets-manager-part-i-discovery-and-design/	Migrating your secrets to AWS Secrets Manager Part I Discovery and design“An ounce of prevention is worth a pound of cure Benjamin Franklin A secret can be defined as sensitive information that is not intended to be known or disclosed to unauthorized individuals entities or processes Secrets like API keys passwords and SSH keys provide access to confidential systems and resources but it can be …	2023-07-21 16:44:20
AWS	AWS - Webinar Channel	Machine Learning in 15: Train your ML models at scale- AWS Machine Learning in 15	https://www.youtube.com/watch?v=TIOt0f8xR3I	Machine Learning in Train your ML models at scale AWS Machine Learning in Take a quick tour of the latest advancements to train your ML models quickly and cost effectively at scale for any use case including Generative AI and Large Language Models LLMs Learning Objectives Objective Discover how to accelerate training of large models with Amazon SageMaker Objective Learn how to get started with the latest SageMaker capabilities for model training Objective Get inspired by use cases include generative AI and LLMs To learn more about the services featured in this talk please visit To download a copy of the slide deck from this webinar visit	2023-07-21 16:15:02
AWS	AWS Security Blog	Migrating your secrets to AWS Secrets Manager, Part 2: Implementation	https://aws.amazon.com/blogs/security/migrating-your-secrets-to-aws-secrets-manager-part-2-implementation/	Migrating your secrets to AWS Secrets Manager Part ImplementationIn Part of this series we provided guidance on how to discover and classify secrets and design a migration solution for customers who plan to migrate secrets to AWS Secrets Manager We also mentioned steps that you can take to enable preventative and detective controls for Secrets Manager In this post we discuss how …	2023-07-21 16:44:32
AWS	AWS Security Blog	Migrating your secrets to AWS Secrets Manager, Part I: Discovery and design	https://aws.amazon.com/blogs/security/migrating-your-secrets-to-aws-secrets-manager-part-i-discovery-and-design/	Migrating your secrets to AWS Secrets Manager Part I Discovery and design“An ounce of prevention is worth a pound of cure Benjamin Franklin A secret can be defined as sensitive information that is not intended to be known or disclosed to unauthorized individuals entities or processes Secrets like API keys passwords and SSH keys provide access to confidential systems and resources but it can be …	2023-07-21 16:44:20
python	Pythonタグが付けられた新着投稿 - Qiita	Embeddingで作成したベクトルデータから、類似度を高いものを検索する	https://qiita.com/takiatsushi/items/fe8ddbed315d81d5327e	embedding	2023-07-22 01:19:57
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS Well-Architected Framework で出てくる難しい言葉を俺なりに分かりやすくしてみた	https://qiita.com/mroldtype/items/b7952cff09052a1aa16d	wellarchitectedframework	2023-07-22 01:29:42
海外TECH	MakeUseOf	The 7 Best Sports Games for iOS and Android	https://www.makeuseof.com/the-best-sports-games-for-ios-and-android/	popular	2023-07-21 16:30:21
海外TECH	MakeUseOf	How to Back Up Your Group Policy Settings on Windows	https://www.makeuseof.com/how-to-backup-group-policy-settings-on-windows/	backup	2023-07-21 16:16:21
海外TECH	DEV Community	Commit with a Past Date and Time in Git	https://dev.to/pradumnasaraf/commit-with-a-past-date-and-time-in-git-1j2f	Commit with a Past Date and Time in GitAs developers we sometimes want to change past Git commits Although true time travel is impossible Git offers a neat way to commit with past dates and times Here s how To change the last commit date and time use this command git commit amend date YYYY MM DD HH MM SS To create a new commit with the past date use git commit date YYYY MM DD HH MM SS Conclusion Keep in mind that amending a commit means rewiring its history Use this powerful feature responsibly	2023-07-21 16:46:43
海外TECH	DEV Community	Mastering Object-Oriented Programming with TypeScript: Encapsulation, Abstraction, Inheritance, and Polymorphism Explained	https://dev.to/rajrathod/mastering-object-oriented-programming-with-typescript-encapsulation-abstraction-inheritance-and-polymorphism-explained-c6p	Mastering Object Oriented Programming with TypeScript Encapsulation Abstraction Inheritance and Polymorphism Explained What is OOPS Object Oriented Programming is a programming paradigm that revolves around the concept of objects An object is a self contained unit that encapsulates data attributes and behaviors methods that operate on that data The primary principles of OOP include Encapsulation Encapsulation refers to the bundling of data attributes and the methods that operate on that data within a single unit object It hides the internal implementation details of the object allowing the object to be treated as a black box and only exposing a public interface through which other parts of the code can interact with it Abstraction Abstraction allows you to focus on the essential aspects of an object while hiding the unnecessary complexities It helps in creating a clear separation between the interface how an object is used and the implementation how it is internally defined Inheritance Inheritance is a mechanism that enables a class subclass to inherit the properties and methods of another class superclass This promotes code reusability and hierarchical relationships between classes Polymorphism Polymorphism allows objects of different classes to be treated as objects of a common superclass It enables a single interface to represent different types of objects providing flexibility and extensibility to the codebase In TypeScript you can create classes and interfaces to implement object oriented programming concepts Here s a basic example of a TypeScript class class Animal private name string constructor name string this name name makeSound console log this name makes a sound class Dog extends Animal constructor name string super name makeSound console log this name barks const dog new Dog Buddy dog makeSound Output Buddy barks In this example we define an Animal class with a makeSound method and then a Dog class that extends Animal The Dog class overrides the makeSound method to provide a specialized implementation By using OOP principles in TypeScript you can create more organized maintainable and scalable applications What is the class and obeject A class is a blueprint for creating objects It defines the structure and behavior of objects that will be instantiated based on the class A class in TypeScript contains properties also known as fields or attributes and methods functions associated with the class It encapsulates the data and operations that are related to a particular concept or entity Here s the basic syntax for creating a class in TypeScript class ClassName Properties attributes propertyName type propertyName type Constructor constructor parameter type parameter type this propertyName parameter this propertyName parameter Methods methodName Method implementation methodName Method implementation Let s create a simple class in TypeScript representing a basic car class Car Properties make string model string year number Constructor constructor make string model string year number this make make this model model this year year Method start console log Starting the this make this model Now an object is an instance of a class Once you have defined a class you can create objects based on that class blueprint Objects represent specific instances of the entity described by the class Each object has its own set of properties and can invoke methods defined in the class Here s how you create an object based on the Car class we defined earlier const myCar new Car Toyota Camry const anotherCar new Car Honda Accord myCar start Output Starting the Toyota Camry anotherCar start Output Starting the Honda Accord In this example we created two separate instances of the Car class myCar and anotherCar each with its own set of properties make model and year and the ability to call the start method Using classes and objects in TypeScript allows you to structure your code more efficiently promote code reuse through inheritance and take advantage of object oriented programming principles EncapsulationEncapsulation is one of the fundamental principles of Object Oriented Programming OOP It refers to the bundling of data attributes and the methods functions that operate on that data within a single unit known as a class The main goal of encapsulation is to hide the internal implementation details of an object and only expose a well defined public interface through which other parts of the code can interact with the object This concept is often summarized with the phrase data hiding Encapsulation provides several benefits Modularity By encapsulating related data and behavior within a class you create a self contained module that can be reused and maintained independently Data Protection By making the internal data private or protected you prevent unauthorized access and modification from outside the class ensuring data integrity and security Code Flexibility Encapsulation allows you to change the internal implementation of a class without affecting the code that uses the class as long as the public interface remains unchanged Now let s see an example of encapsulation in TypeScript class BankAccount private accountNumber string private balance number constructor accountNumber string initialBalance number this accountNumber accountNumber this balance initialBalance public getAccountNumber string return this accountNumber public getBalance number return this balance public deposit amount number void this balance amount console log Deposited amount New balance this balance public withdraw amount number void if this balance gt amount this balance amount console log Withdrawn amount New balance this balance else console log Insufficient balance In this example we have a BankAccount class that represents a simple bank account The class has two private properties accountNumber and balance These properties are marked as private so they are not accessible from outside the class This ensures that other parts of the code cannot directly access or modify these properties To interact with the private properties the class provides public methods getAccountNumber getBalance deposit and withdraw These methods serve as the public interface through which other parts of the code can interact with the BankAccount object Now let s use this class const account new BankAccount console log Account Number account getAccountNumber Output Account Number console log Balance account getBalance Output Balance account deposit Output Deposited New balance account withdraw Output Withdrawn New balance account withdraw Output Insufficient balance In this usage example we can see that we can access the account number and balance through the public methods but we cannot directly modify them This is due to the encapsulation which protects the internal state of the BankAccount object and allows controlled access through the defined public interface By encapsulating the data within the class and providing well defined methods to interact with it we ensure that the state of the object remains consistent and secure making the code easier to maintain and less prone to bugs or accidental misuse AbstractionAbstraction is a key concept in Object Oriented Programming OOP that focuses on presenting essential features of an object while hiding unnecessary details It allows you to represent complex systems or entities in a simplified manner making it easier to understand and work with them Abstraction enables you to build models that capture the relevant characteristics of an object without exposing all the implementation specifics In OOP abstraction is achieved through the use of abstract classes and interfaces These abstract constructs provide a blueprint for other classes to follow defining a set of methods and properties without providing their implementation The concrete subclasses that extend the abstract class or implement the interface are responsible for implementing these abstract elements The main benefits of abstraction are Simplified Complexity Abstraction allows you to focus on the high level design and behavior of an object hiding the intricate details that might not be relevant at that level Code Reusability By defining common interfaces through abstract classes or interfaces you promote code reuse Concrete classes can inherit from an abstract class or implement an interface inheriting its structure and behavior Flexibility Abstraction enables you to change the implementation details of concrete classes without affecting the overall functionality of the program as long as the abstract interface remains unchanged Let s illustrate abstraction with an example Abstract class representing a shapeabstract class Shape abstract getArea number abstract getPerimeter number Concrete subclass representing a Circleclass Circle extends Shape private radius number constructor radius number super this radius radius getArea number return Math PI this radius this radius getPerimeter number return Math PI this radius Concrete subclass representing a Rectangleclass Rectangle extends Shape private width number private height number constructor width number height number super this width width this height height getArea number return this width this height getPerimeter number return this width this height In this example we have an abstract class called Shape It defines two abstract methods getArea and getPerimeter These methods represent the essential characteristics of any shape but they are not implemented in the Shape class itself Then we have two concrete subclasses Circle and Rectangle that extend the Shape class These subclasses are responsible for providing implementations for the abstract methods By using abstraction we can create a collection of different shapes and calculate their areas and perimeters without worrying about the specific implementation details of each shape function printShapeDetails shape Shape console log Area shape getArea console log Perimeter shape getPerimeter const circle new Circle const rectangle new Rectangle printShapeDetails circle printShapeDetails rectangle When we run this code we get the following output Area Perimeter Area Perimeter The beauty of abstraction is that the printShapeDetails function can work with any shape that implements the Shape interface We can create new shapes such as triangles squares etc without modifying the Shape class or the printShapeDetails function This demonstrates the flexibility and reusability achieved through abstraction InheritanceInheritance is a core concept in Object Oriented Programming OOP that allows a class subclass to inherit properties and methods from another class superclass It forms an is a relationship between classes where the subclass is a specialized version of the superclass Inheritance promotes code reuse as it allows you to define common attributes and behaviors in a superclass and then extend or modify them in subclasses The class that is being inherited from is called the superclass or base class while the class that inherits from the superclass is called the subclass or derived class Here are the main advantages of inheritance Code Reusability Inheritance allows you to reuse the functionality defined in the superclass reducing the amount of redundant code in your application Modularity Inheritance promotes a hierarchical organization of classes making the code more organized and easier to maintain Polymorphism Inherited methods can be overridden in the subclass to provide specialized behavior allowing for polymorphic behavior when dealing with objects of different classes through a common superclass interface Let s demonstrate inheritance with an example Base class Animalclass Animal private name string private age number constructor name string age number this name name this age age makeSound console log Some generic sound getInfo return Name this name Age this age Subclass Dog inherits from Animal class Dog extends Animal private breed string constructor name string age number breed string super name age this breed breed makeSound console log Woof getInfo return super getInfo Breed this breed In this example we have a base class Animal with properties name and age and methods makeSound and getInfo Then we define a subclass Dog that inherits from Animal The Dog class adds its specific property breed and overrides the makeSound and getInfo methods Now let s create objects based on these classes const genericAnimal new Animal Generic Animal console log genericAnimal getInfo Output Name Generic Animal Age genericAnimal makeSound Output Some generic sound const dog new Dog Buddy Labrador console log dog getInfo Output Name Buddy Age Breed Labrador dog makeSound Output Woof In this example we can see that the Dog class inherits the name age and methods from the Animal class The makeSound method is overridden in the Dog class to provide the specific sound of a dog Woof Additionally the getInfo method is also overridden in the Dog class to include the breed property along with the name and age By using inheritance we can create a hierarchy of classes where each subclass inherits and extends the functionality of the superclass This approach allows us to reuse common code define specialized behaviors and build complex systems in a structured and modular way PolymorphismPolymorphism is another important concept in Object Oriented Programming OOP that allows objects of different classes to be treated as objects of a common superclass It enables a single interface method or property to represent different types of objects providing flexibility and extensibility to the codebase Polymorphism is often achieved through method overriding and method overloading There are two types of polymorphism Compile time Polymorphism Static Polymorphism This type of polymorphism is resolved at compile time It occurs when the method overloading is used i e having multiple methods with the same name but different parameter lists The compiler determines the appropriate method to call based on the method s signature and the arguments passed during the function call Run time Polymorphism Dynamic Polymorphism This type of polymorphism is resolved at run time It occurs when the method overriding is used i e having a method in the subclass with the same name and signature as the one in the superclass The method to be called is determined at run time based on the actual type of the object Let s illustrate both types of polymorphism with an example Compile time Polymorphism Method Overloading class MathOperations add a number b number number add a string b string string add a any b any any return a b const math new MathOperations console log math add Output number addition console log math add Hello World Output Hello World string concatenation Run time Polymorphism Method Overriding class Animal makeSound console log Some generic sound class Dog extends Animal makeSound console log Woof class Cat extends Animal makeSound console log Meow function animalSound animal Animal animal makeSound const dog new Dog const cat new Cat animalSound dog Output Woof Dog s sound animalSound cat Output Meow Cat s sound In this example we first demonstrate compile time polymorphism through method overloading in the MathOperations class We define two versions of the add method one for number addition and another for string concatenation The appropriate method is chosen at compile time based on the argument types used during the function call Next we demonstrate run time polymorphism through method overriding in the Animal Dog and Cat classes The Animal class has a makeSound method that provides a generic sound Both the Dog and Cat classes override the makeSound method to provide their specific sounds When we call the animalSound function with different objects of Dog and Cat the appropriate makeSound method is dynamically determined at run time based on the actual object s type Polymorphism allows you to write more flexible and extensible code by treating objects based on their common interface rather than their specific types It plays a crucial role in designing large scale applications and simplifies the interactions between various classes and modules TypeScript InterfacesIn TypeScript interfaces are used to define the structure and shape of an object They provide a way to define contracts that objects must adhere to specifying the properties methods and their types that an object of that interface should have Interfaces play a crucial role in achieving static type checking and providing code documentation Here s an overview of TypeScript interfaces Interface Declaration You can declare an interface using the interface keyword followed by the name of the interface For example interface Person name string age number Properties Interfaces define the properties that an object must have Each property is defined with a name and its type For example interface Person name string age number Optional Properties You can make properties optional in an interface by adding a question mark after the property name These properties can be present or omitted in the implementing object For example interface Person name string age number Readonly Properties You can mark properties as readonly using the readonly modifier Readonly properties can only be assigned a value when the object is created and cannot be modified thereafter For example interface Person readonly name string readonly age number Methods Interfaces can also define methods that an object should implement Method signatures include the method name parameter types and return type For example interface Calculator add a number b number number subtract a number b number number Extending Interfaces Interfaces can extend other interfaces inheriting their properties and methods while adding new ones This helps in creating modular and reusable interface definitions For example interface Employee extends Person employeeId number department string Implementing Interfaces To ensure an object adheres to an interface you can use the implements keyword to specify that the object implements a particular interface TypeScript will enforce that the object provides the required properties and methods For example class Person implements Employee name string age number employeeId number department string Interfaces in TypeScript provide a way to define contracts and enforce type checking for objects They promote code reusability maintainability and help in catching errors at compile time They are a fundamental tool in writing type safe and structured code in TypeScript Thank You Thank you for taking the time to read my blog post I hope you found it helpful and informative Your support and engagement mean a lot to me If you have any questions or feedback please don t hesitate to reach out I appreciate your continued interest and look forward to sharing more valuable content in the future Thank you once again	2023-07-21 16:22:54
海外TECH	DEV Community	Creating a Game-Changer in Job Search: An Open Source ATS Resume Matcher	https://dev.to/srbhr/creating-a-game-changer-in-job-search-an-open-source-ats-resume-matcher-31g9	Creating a Game Changer in Job Search An Open Source ATS Resume MatcherHello Dev Community I have created an open source ATS Applicant Tracking System tool called Resume Matcher This project aims to assist job seekers in making it past that challenging initial resume screening process Links Website Made in Astro www resumematcher fyiGitHub Resume MatcherDemo on Streamlit Resume MatcherDiscord for discussion The Standard ProcessWe all know the drill You spend time creating your resume applying for the job and then no replies Why is that The answer often lies in the automated screening systems called Applicant Tracking Systems ATS These systems use algorithms to scan resumes for specific keywords and criteria If your resume doesn t hit the right notes it may never see human eyes no matter how qualified you are Why use Resume MatcherThat s where the Resume Matcher comes in This Python based project serves as an aid to check if your resume is ATS friendly or not It s designed to analyze your resume against the job description you re applying for But that s not all The tool uses Spacy NLTK Vector Databases and semantic similarity to highlight common keywords between the job description and your resume Provide keyword analysis matching keywords between the job description and your resume While providing common key terms in your resume as well Along with a vector similarity score So you get an idea of which extra keywords you can include and where you can improve Why I m creating thisI have faced the same challenges before I ve applied to multiple jobs and in some instances I had the right experience But I never got any call or interview opportunity This made me realize there s more to job hunting than your skills Your resume has to include the keywords in the job description and it should be able to be parsed by ATS well That s where the idea of Resume Matcher came in Now with many LLMs NLP and Machine Learning Algorithms I can create a good resume But this project still has a long way to go And I need the community s help I need help to do all the proper work and people to guide me well And someone who understands the pain of applying and never getting a callback can also relate to this What s the current status and what I m looking for Currently this project only has a Streamlit app for demo If the web developers can create a dashboard for it where people can upload their resumes then the Python developers can do their magic on the backend It ll be a great help Development areas Web Development creating a react dashboard Python Backend Fast Api Flask Django etc Someone who understands LangChain Vector Databases and LLMs can aid in creating a prompt with the discovered keywords so people can use them Data Visualization Improve the Readme provide documentation etc Improve the landing page website from Astro to react It s for youMy aim is to help the people in the tough times There have been many layoffs and people are still looking for jobs Many young people graduates can also be supported by this project Also for those who contribute this project can be a really lovely addition to their resumes and their GitHub as well Once again Links Website Made in Astro www resumematcher fyiGitHub Resume MatcherDemo on Streamlit Resume MatcherDiscord for discussion If you liked this post please support the project You can find me on GitHub srbhr	2023-07-21 16:20:50
海外TECH	DEV Community	Client-Server Architecture🤝 : Deep Dive	https://dev.to/tanishtt/client-server-architecture-deep-dive-1a2e	Client Server Architecture Deep DiveWelcome let s deep dive into the concept Client server architecture is a common model used in computer networks to allow multiple devices to communicate with each other It involves two main components the client and the server Let me explain it in simple terms Imagine you want to order food from a restaurant In this scenario You the customer are the client The restaurant staff who takes your order and prepares the food is the server Here s a step by step explanation of client server architecture Clients Clients are devices like your computer smartphone or tablet They initiate communication and request services from the server In our restaurant example you the customer are the client Servers Servers are powerful computers or devices dedicated to providing services or resources to clients They wait for incoming requests from clients and respond accordingly In our restaurant example the restaurant staff taking orders and preparing food is the server Communication Clients and servers communicate over a network like the internet When you order food your request is sent over the network to the restaurant s server which processes the order and sends back the response Request Response Model The communication between clients and servers typically follows a request response model The client sends a request for a particular service and the server processes the request and sends back a response with the required information In our restaurant example you request specific dishes and the server restaurant staff processes your order and prepares the food as per your request Stateless Client server communication is usually stateless which means each request is treated independently The server doesn t remember past interactions with a specific client For instance in our restaurant example each time you place an order the restaurant staff doesn t remember your previous orders Scalability Client server architecture allows for easy scalability If more clients need to access the server simultaneously it can handle those requests by distributing the workload efficiently Examples of client server architecture in real life Email Your email client like Gmail communicates with the email server to send and receive messages Web Browsing When you visit a website your web browser acts as the client and it communicates with the website s server to retrieve and display the web page content In the scenario described above when a client wants to request data from a server the following steps occur The client needs to know the IP address of the particular server it wants to communicate with To obtain this information it sends a request to the Domain Name System DNS server providing the domain name of the target server The DNS server responds with the IP address associated with the requested domain name Armed with the IP address the client sends its request to the server The request includes the destination IP address and a specific port number that corresponds to the particular application running on the server that the client wants to communicate with The server receives the client s request and processes it After processing the request the server generates a response message The response message is then sent back to the client using the IP address and port number specified in the client s request The client receives the response packet and extracts the information it needs based on the port number At a high level the communication between the client and server takes place using HTTP packets HTTP Hypertext Transfer Protocol is the protocol that allows the client and server to communicate over the internet and exchange data It is a standardized set of rules that define how requests and responses should be formatted and handled Types of Client Server ArchitectureCertainly Client server architecture can be categorized into different types based on how the communication and responsibilities are distributed between clients and servers Here are some common types of client server architectures Two Tier Architecture Client Server In this type the client directly communicates with the server to request services and retrieve data The server handles both the presentation logic user interface and the business logic processing the request and data This architecture is suitable for small scale applications but may become less scalable as the application grows Example Traditional client server applications where a desktop application communicates with a central server to access a database Three Tier Architecture In this type the client interacts with an intermediate layer called the application server or middleware which acts as a bridge between the client and the database server The three tiers are Presentation Tier Client Responsible for the user interface and capturing user input Application Tier Middleware Handles the business logic and processing of requests It communicates with the database server to retrieve and store data Data Tier Server This is the database server that stores and manages the data This architecture enhances scalability as the workload can be distributed between the application server and the database server Example Web applications where the web browser is the client the web server is the application server and the database server stores the data N Tier Architecture N Tier architecture is an extension of the three tier architecture and allows for more layers or tiers to be added for specific purposes Additional tiers may include security servers caching servers load balancers etc depending on the complexity and requirements of the application This architecture provides better modularity flexibility and performance optimization Example Large scale enterprise applications with multiple layers for security caching and load balancing Peer to Peer Architecture In this type there is no distinct differentiation between clients and servers Each device peer can act as both a client and a server sharing resources and services directly with other peers Peers communicate and collaborate with each other in a decentralized manner This architecture is commonly used in file sharing applications and collaborative systems Example BitTorrent a peer to peer file sharing protocol Cloud Computing Service Oriented Architecture SOA Cloud computing often uses a service oriented architecture where clients access services provided by remote servers over the internet Clients interact with cloud services via APIs Application Programming Interfaces rather than direct communication Cloud services may encompass various functionalities like storage computation databases etc Example Cloud based platforms like Amazon Web Services AWS or Microsoft Azure Deep Dive into Tier and Tier Architecture️Sure Let s delve deeper into both the tier and tier architectures including their features advantages and disadvantages ️ Tier Architecture Client Server Features Also known as the Client Server architecture Consists of two main tiers the client and the server The client is responsible for the user interface and interacts directly with the server to request services and retrieve data The server handles both the presentation logic user interface and the business logic processing the request and data Typically used for small scale applications with a limited number of users Advantages Simplicity tier architecture is relatively simple to implement as it involves only two tiers Performance Since there is a direct connection between the client and the server the response time can be faster compared to more complex architectures Low Network Traffic Communication occurs directly between the client and server reducing network traffic Easy Maintenance With fewer components maintenance and troubleshooting are generally straightforward Disadvantages Scalability As the application grows and the number of clients increases the server may become overloaded affecting performance Limited Modularity Lack of separation between presentation and business logic can make the application less modular and harder to maintain Security Security measures might be limited as the client directly interacts with the server and could be susceptible to various attacks Data Integrity The lack of an intermediate tier might lead to data integrity issues if clients directly manipulate data without proper validation ️ Tier Architecture Features Consists of three main tiers presentation tier application tier middleware and data tier server Presentation Tier Client Responsible for the user interface and capturing user input Application Tier Middleware Acts as an intermediary between the client and the database server handling business logic and processing requests Data Tier Server Stores and manages the data and the application tier communicates with it to retrieve or store information Offers better scalability and modularity than tier architecture Advantages Scalability The separation of concerns allows for distributing the workload between the application tier and the data tier enhancing scalability Modularity Each tier can be developed independently making it easier to maintain and update the application Improved Security The application tier can implement security measures independently reducing potential vulnerabilities Data Integrity The data tier ensures data consistency and integrity preventing direct manipulation by clients Disadvantages Complexity The additional tier application tier introduces more complexity which can make development and debugging more challenging Performance Overhead The involvement of an additional tier may introduce some performance overhead due to increased communication between the tiers Higher Costs Implementing and managing a three tier architecture can be more expensive than a two tier one especially for smaller applications with limited user bases Maintenance Challenges As the application becomes more complex maintenance and troubleshooting might require more effort and expertise ️N Tier Architecture Apologies for any confusion earlier Let me provide a clearer and more detailed explanation of N Tier Architecture ️N Tier Architecture Features N Tier Architecture is a software design pattern that organizes an application into multiple tiers or layers with each tier responsible for specific functions and having a defined role in the overall system Unlike the Tier Architecture which has three main tiers presentation application and data N Tier Architecture can have more than three tiers making it suitable for complex and large scale applications The typical tiers in an N Tier Architecture are as follows Presentation Tier Client The presentation tier is the user facing part of the application where users interact with the system It handles the user interface and captures user input The client can be a web browser a mobile app or any other user interface that communicates with the rest of the application Application Tier Middleware The application tier acts as an intermediary between the presentation tier and the data tier It contains the core business logic and processes user requests and actions The application tier handles application specific functionalities such as user authentication session management and business rules Data Tier Server The data tier is responsible for storing and managing the application s data It handles data storage retrieval and manipulation The data tier interacts with databases or other data storage systems to persist and retrieve data required by the application Additional Tiers Optional N Tier Architecture allows for the inclusion of additional tiers as needed for specific functionalities or requirements These tiers may include specialized components like caching servers load balancers search engines or external APIs Advantages Scalability The modular nature of N Tier Architecture allows for horizontal scaling where additional instances of each tier can be added to handle increased user traffic and demand for resources Flexibility The architecture s separation of concerns enables developers to modify or add tiers based on the application s requirements allowing for the integration of specialized components for improved performance and functionality High Security By segregating sensitive functions and data into separate tiers N Tier Architecture enhances security limiting access to critical components and reducing the attack surface Modularity and Reusability Each tier can be developed independently and reused across multiple applications promoting code maintainability and reducing development time for future projects Disadvantages Complexity The presence of multiple tiers and interactions between them can make the architecture more complex to design implement and debug requiring skilled developers and careful planning Performance Overhead The communication between tiers may introduce latency and performance overhead due to additional network requests and data transfers potentially affecting response times Cost and Resource Consumption Implementing and managing multiple tiers can increase development and infrastructure costs especially for smaller projects with lower user loads Deployment Complexity Deploying monitoring and maintaining multiple tiers require more sophisticated processes and tools which can be challenging for less experienced teams Let s understand with exampleSure Let s provide examples for both the tier and tier architectures Tier Architecture Client Server Example A Simple Desktop Database ApplicationImagine you are developing a basic desktop application that allows users to manage their personal contacts Here s how the tier architecture could be implemented Client Presentation Tier The client is the desktop application s user interface It provides a simple graphical interface for users to add edit and view their contacts Users directly interact with the application s forms and buttons to perform tasks Server Business Logic and Data Tier The server is responsible for processing the user s input and managing the contacts data It handles the business logic such as adding new contacts to the database retrieving contacts and updating existing entries The server directly accesses the local database e g SQLite to store and retrieve contact information Tier Architecture Example E commerce WebsiteImagine you are developing an e commerce website where users can browse products add items to their cart and place orders Here s how the tier architecture could be implemented Client Presentation Tier The client is the user s web browser e g Google Chrome Mozilla Firefox It communicates with the application server middleware to request web pages and display the user interface Users interact with the website s interface to browse products and add items to their cart Application Server Middleware The application server acts as the intermediary between the client and the data tier It handles the business logic such as processing product searches managing the shopping cart and handling user authentication The application server retrieves and sends data to the client as requested and processes user actions Data Tier Server The data tier is the backend server that stores and manages product information user accounts and orders It uses a database management system e g MySQL PostgreSQL to store and retrieve data The application server communicates with the data tier to retrieve product details user information and order history In the tier architecture example the client web browser interacts with the application server to request product information and perform actions and the application server communicates with the data tier to fetch the required data and update the database as necessary This separation of concerns in the tier architecture allows for better scalability and modularity making it suitable for handling large scale e commerce websites with numerous users and complex interactions N Tier Architecture Example Social Media PlatformLet s consider the development of a social media platform like Facebook where users can create posts comment on them and connect with others Here s how the N tier architecture could be implemented Client Presentation Tier The client is the user s web browser or mobile app providing an interface for users to interact with the social media platform Users can view their feed create posts comment on posts and perform various other actions through the client Web Server Application Tier The web server acts as the first intermediary in the N tier architecture It handles the presentation logic for rendering web pages or processing API requests from the client The web server communicates with the application server for complex operations and data retrieval Application Server Middleware The application server is responsible for the core business logic and application specific functionalities It handles user authentication manages user connections processes posts and comments and implements privacy settings The application server interacts with the database server for data retrieval and storage Database Server Data Tier The database server is where all the data for the social media platform is stored It manages user profiles posts comments friend connections and other relevant information The database server is accessed by the application server to perform read and write operations on the data Storage Tier Optional In some cases a storage tier may be introduced to handle large scale media storage such as images and videos uploaded by users This tier may use specialized distributed storage systems like Amazon S or a content delivery network CDN for media delivery In the N tier architecture example the client interacts with the web server to request web pages or API services The web server processes simple requests and forwards more complex tasks to the application server The application server handles business logic user management and interacts with the database server to store and retrieve data Optionally a storage tier can handle media storage making the platform more scalable for large volumes of multimedia content Until next time Happy learning If you liked the article do like	2023-07-21 16:03:59
海外TECH	Engadget	The best budget gaming laptops for 2023	https://www.engadget.com/best-budget-gaming-laptop-130004199.html?src=rss	The best budget gaming laptops for Not everyone needs an NVIDIA RTX or a blazing fast Hz screen These days you can find plenty of affordable gaming notebooks that can easily hit decent frame rates in modern games Cheaper machines are ideal for high school or college students who don t need the absolute best performance And they re also great options for younger gamers who may not be ready for the responsibility of a premium notebook What is a budget gaming laptop At the high end you can easily spend on a fully tricked out notebook like the Razer Blade When it comes to budget models we re focusing on the other end of the pricing spectrum laptops under It used to be tough to find a decent gaming option at that price point but as PC prices have fallen they no longer seem like unicorns Stepping up a bit to systems between and puts you firmly in mid range territory which is beyond the scope of this guide Still it s worth keeping an eye out for sales that can push those PCs below Be sure to check out our guide to the best gaming laptops for a general overview of what to look out for in these more expensive systems Are budget gaming laptops worth it Cheap gaming laptops are definitely worth it if you re trying to save money and are being realistic about what you can get at this price range You can expect to find Intel and AMD s latest but not greatest CPUs as well as entry level GPUs like NVIDIA s RTX They re also typically paired with p screens running at Hz or beyond There are some exceptions though Dell s G currently discounted to is notable for its inch quad HD screen Many cheap gaming laptops also skimp on specs like RAM and storage We d recommend getting at least GB of RAM and a GB SSD Modern games need a decent chunk of memory to run and they also tend to be large so you wouldn t be able to fit much alongside Windows on a B SSD You might be tempted to jump on one of those dirt cheap gaming laptop deals from Walmart or Best Buy but it s just not worth it if you re stuck with GB of RAM or a tiny SSD As for build quality expect to find more plastic than metal on budget systems Still the best cheap gaming laptops we re recommending should be sturdy enough to last a few years Affordable systems will also be heavier and thicker than mid range and premium models and they typically don t have great battery life These are worthwhile trade offs if you re looking to save money though and even the priciest gaming laptops struggle with battery life Best overall Dell GDell was one of the first PC makers to combine a decent amount of gaming power in a sub system The latest G builds on that experience It starts at with Intel s th gen i HX an RTX GPU and GB of RAM We d recommend bumping up to the model with GB of RAM a GB SSD and a Hz p screen with NVIDIA s G SYNC technology While it s no Alienware the G carries over some of that premium brand s design cues with a sharp angular case and LED backlit keys There s a distinct lack of gamer bling which for some may also be a plus If you re looking for something larger consider the inch screen version mentioned above which funny enough is also slightly lighter than the G Runner up Acer Nitro The Acer Nitro is another great option though we ve yet to see it get Intel s th gen chips Still the th gen model is no slouch It s equipped with GB of RAM NVIDIA s RTX and GB of storage At the time of writing it s also on sale for at Best Buy though it typically sells for Just like Dell Acer has plenty of experience building gaming laptops so this will likely survive years of extreme play The Nitro s multi colored backlit keyboard and rear red accents also give off a stronger gamer vibe than the G Side note Acer s Nitro may also be worth considering if it dips below since it features newer CPUs and GPUs A more understated option HP Victus The HP Victus is the ideal gaming laptop for someone who doesn t want to be seen with a gaming laptop Its all black design is wonderfully understated and its edge to edge screen is impressive for such an affordable system It also has enough power to handle today s games including an AMD Ryzen CPU NVIDIA s RTX Ti graphics GB of RAM and a Hz p display And best of all it s almost always on sale somewhere In fact at the time of writing it s on Amazon This article originally appeared on Engadget at	2023-07-21 16:15:08
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