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Dev
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Day 0: System Architecture basics
- System design starts with understanding the high-level architecture of a computer system, including bits, storage, RAM, cache memory, CPU, and motherboard.
- Production-ready app architecture involves components like CI/CD pipelines, load balancers, external storage solutions, and logging and monitoring systems.
- Debugging process includes error identification through logs, replication in non-production environments, analysis using tools, and hotfix deployment for temporary fixes.
- Key principles of system design include scalability, maintainability, efficiency, and robustness under adverse conditions.
- The CAP theorem outlines trade-offs in distributed systems, balancing consistency, availability, and partition tolerance.
- Networking basics cover IP addressing, data packets, transport layer protocols like TCP and UDP, and application layer protocols such as HTTP, WebSockets, SMTP, and FTP.
- API design best practices focus on RESTful principles, GraphQL flexibility, and rate limiting to control API requests.
- Strategies for reducing latency in web development involve caching and CDNs for faster data access.
- Proxy servers serve as intermediaries like forward proxies for client anonymity and reverse proxies for load balancing and encryption management.
- Load balancing distributes workloads via strategies like round-robin, least connection, and geographical algorithms to prevent server bottlenecks.
- Database fundamentals cover relational vs. NoSQL databases, sharding, replication, caching, and indexing for performance optimization.
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Dev
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Day 1: java inroduction
- Java is a popular, high-level, object-oriented programming language designed for flexibility, security, and cross-platform compatibility.
- Java has a strong future due to continuous updates, enterprise demand, cloud and AI applications, Spring Framework growth, and Android development.
- Java offers platform independence, encourages object-oriented programming, has strong community support, ensures security, and provides rich libraries and frameworks.
- Java components include JVM (Java Virtual Machine), JRE (Java Runtime Environment), JDK (Java Development Kit), and JIT (Just-In-Time Compiler).
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Javacodegeeks
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Spring Boot Pkl Example
- Pkl is a configuration-as-code language developed by Apple, combining static formats like JSON with programming language features for enhanced configuration management.
- It introduces classes, functions, and type annotations for scalability and safety in complex configurations.
- Pkl aims to address issues of repetition, maintainability, and lack of validation in traditional configuration formats.
- Key features of Pkl include declarative syntax, programming constructs, rich validation, scalability, safety, versatile output, embeddability, and IDE integration.
- In Spring Boot, adding dependencies like 'spring-boot-starter-web' and 'pkl-spring-boot-starter' enables Pkl integration.
- Create a Pkl schema defining the application's configuration structure, including classes like 'Server' and 'Endpoint'.
- Define the application's configuration values in a Pkl file, setting up endpoints with specified names and port numbers.
- Use the Pkl Gradle plugin to generate Java classes from the Pkl schema automatically.
- Inject the generated AppConfig into Spring Boot components to access and utilize the configuration.
- Expose the Pkl configuration via a Spring REST controller to provide access to the server's configured endpoints through a RESTful API.
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Dev
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Java Pattern Printing: A Developer's Guide
- Pattern printing is a great way to improve logic-building skills in Java.
- A square pattern is one of the simplest patterns, where the same character or number is printed in a grid format.
- Right-Angled Triangle Pattern: This pattern builds a right-angled triangle using increasing rows of symbols.
- Inverted Pyramid Pattern: In this pattern, we start with the maximum number of symbols in the first row, decreasing in each subsequent row.
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Logrocket
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Aligning stakeholders with a design kick-off meeting
- Misalignment in the product development process can lead to failed projects and frustration among teams.
- To address misalignment issues, a design requirements kick-off meeting was introduced to ensure stakeholder involvement and clarity in project goals.
- Utilizing a RACI chart helped define stakeholder roles, responsibilities, and when to involve them in the process.
- Creating a collaborative workspace using FigJam aided in keeping everyone informed and aligned before delving into design.
- Key components of the FigJam board included project overview, success metrics, user journey mapping, and documentation of challenges.
- The design kick-off meeting started with a project overview to ensure all stakeholders shared a common understanding of the project's purpose.
- Setting clear, measurable goals before designing helps in avoiding revisions and ensures alignment with project objectives.
- Visualizing requirements through a user journey map helps in connecting the dots, identifying pain points, and focusing on real user problems.
- Prioritizing requirements based on criticality helps avoid scope creep and sets a baseline for design iterations.
- Addressing challenges and uncertainties early on in the kick-off meeting prevents surprises and ensures smoother project execution.
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Medium
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Scaling Into Trades with Logic: How to Build Ladder Entries and Exits in Pine Script
- Ladder-based strategies allow for structured entry and exit models in trading.
- Using volatility zones and partial fills in Pine Script can simplify the implementation.
- Ladder entries involve setting up multiple entry points for a trade, allowing for greater control.
- Ladder exits involve layering exit logic, helping to secure profits while still letting the trade continue.
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Sdtimes
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BrowserStack adds Private Devices offering to enabling testing across variety of secured devices
- BrowserStack has introduced a new offering called Private Devices to provide access to secured real devices for testing applications.
- Private Devices ensures advanced security and testing flexibility for large enterprises.
- Features of Private Devices include guaranteed availability, persistent device setups, advanced functionality, fixed SIM cards, and isolated device access.
- The offering allows testing applications on real devices without the costs of procuring and maintaining the devices.
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PlanetPython
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PyCon: Call for Volunteers: PyCon US Code of Conduct Team
- PyCon US is seeking volunteers for the Code of Conduct Team for the 2025 event in Pittsburgh, PA.
- Volunteers will support the community by handling reports of any violations of the Code of Conduct and participating in response decisions.
- Shifts are 3-4 hours long, with a minimum requirement of two shifts.
- The team is particularly interested in candidates with code of conduct response experience, proficiency in multiple languages, and international backgrounds.
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TechBullion
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Narendra Samineni’s Proficiency in APIs and Integration
- APIs are essential in today's software landscape, with 74% of developers taking an API-first approach according to Postman's 2024 State of the API Report.
- Narendra Samineni is recognized for his expertise in designing and securing APIs, with a focus on RESTful services and system integration.
- Narendra's approach emphasizes intuitive design, consistency, and empathy for developer experience in crafting APIs.
- He stays abreast of technology trends and leverages modern frameworks like ASP.NET Core Web API for efficient development.
- Narendra advocates for microservices architecture and applies domain-driven design for robust integration in complex systems.
- Security is a priority in his API development, utilizing OAuth 2.0 and implementing multiple layers of security measures.
- He emphasizes performance optimization, scalability, and cloud-native services for high-performing and reliable APIs.
- Narendra focuses on usability and documentation, using tools like OpenAPI to simplify integration and testing processes.
- Continuous learning and exploration of new ideas keep him at the forefront of API and integration technology.
- By combining expertise in API architecture, security, and performance, Narendra transforms integration challenges into future-proof solutions.
- His dedication to best practices and innovation showcases his readiness to navigate the evolving landscape of interconnected systems.
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Dev
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Introduction to AWS CDK: Fundamentals and Benefits
- The AWS Cloud Development Kit (CDK) allows defining cloud infrastructure using familiar programming languages like TypeScript, JavaScript, Python, Java, C#, or Go, representing a paradigm shift in infrastructure as code.
- Learning resources for AWS CDK include official documentation, developer guide, API reference, and FAQs, along with workshops like AWS CDK Immersion Day Workshop.
- Benefits of AWS CDK include type safety for early error detection with statically-typed languages, code reusability through custom Constructs, enhanced developer productivity with multiple programming language support, and unified infrastructure and application code management.
- AWS CDK facilitates enhanced scaling, governance, and compliance, offering advantages over traditional CloudFormation.
- While CloudFormation requires explicit definition of all resources in JSON or YAML, AWS CDK supports multiple programming languages, IDE code completion, and automatic generation through CDK libraries.
- CDK allows concise and readable code creation, reducing boilerplate code and focusing on essential infrastructure design.
- By reducing boilerplate code, CDK decreases maintenance effort, improves code readability, and reduces human error, providing a more efficient infrastructure development environment.
- AWS CDK represents a significant evolution in cloud infrastructure management, offering a powerful alternative to template-based approaches like CloudFormation.
- In the next article of the series, core components of AWS CDK like Constructs, Stacks, and Apps will be explored to deepen understanding of infrastructure development with CDK.
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Medium
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State Spaces
- The agent needs to know its current state, the effects of its actions, and has a defined goal to achieve.
- A solution to a search problem involves finding a sequence of actions to reach a state that satisfies the goal.
- In the example of a robot delivery domain, the state space is defined by the locations of offices and the lab.
- To find a path from location A to location G, the agent needs to traverse neighboring locations using state-space search.
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Medium
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How to get an internship at Meta — from application to offer
- Securing an internship at Meta can be challenging, but knowing the process can help ease the application journey.
- Initial contact may come through a recruiter after assessing your LinkedIn profile or applying through the job post.
- Refining your CV and enhancing your LinkedIn profile are crucial before the application season begins.
- The online assessment for Meta's internship includes coding and behavioral components.
- Practice LeetCode-style coding questions, especially on fundamental topics like arrays and recursion, for the coding assessment.
- For the behavioral assessment, be authentic in your answers and align with Meta's values and culture.
- The interview stage involves coding problems, where preparation on computer science fundamentals is key.
- During the interview, articulate your thought process, explain your solutions clearly, and ask thoughtful questions at the end.
- Preparing questions about Meta's tech stack, culture, and daily routines can demonstrate your interest and engagement.
- Receiving an internship offer from Meta involves demonstrating your skills and fit during the application process.
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Dev
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Mastering AWS CDK: A Comprehensive Guide (Overview)
- This comprehensive series on the AWS Cloud Development Kit (CDK) provides a complete learning path from beginner to advanced user.
- AWS CDK is a framework for defining cloud resources using programming languages and supports various languages including TypeScript, JavaScript, Python, Java, C#, and Go.
- Key benefits of AWS CDK include type safety, code reuse, improved productivity, infrastructure and app integration, and simplified scaling and governance.
- The CDK components include app, stack, and construct, each serving different purposes in defining and managing cloud resources.
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Dev
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Devnexus: Bringing Java Into The Age Of AI
- Devnexus 2025 marked the 21st edition of the oldest and largest Java community conference in Atlanta, Georgia.
- The event celebrated Java's 30th anniversary, with over 1200 professionals attending workshops and talks centered around AI and improving Java tools.
- Java's security challenges are integral to enterprise security, given its widespread use in over 90% of Fortune 500 companies.
- Securing secrets in Java applications, like Neo4J and Keycloak, is crucial to prevent attacks and data breaches.
- Authentication and authorization were key topics at Devnexus, with sessions addressing secrets security and the use of Spring Security.
- The Java community is incorporating AI technologies, with a focus on leveraging AI for enterprise applications and enhancing Java with AI innovations.
- The future of Java development looks promising, with Java remaining a preferred choice for enterprises prioritizing scalability and dependability.
- Over 300 Java User Groups worldwide offer support for developers, emphasizing the active and welcoming nature of the Java community.
- GitGuardian provides free repository secrets scanning for Java projects, supporting the security of Java applications and promoting open source practices.
- The Java community's embrace of new technologies and commitment to security bodes well for the language's continued relevance and success in the future.
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Testim.io
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Jest Testing: A Helpful, Introductory Tutorial
- Jest is a popular test framework for JavaScript, initially created by Facebook for testing React applications.
- It has gained popularity for testing both front-end and back-end JavaScript applications.
- Unit testing is important for software quality, and Jest helps in verifying smallest parts of an application in isolation.
- Jest offers a complete experience with features like zero configuration setup and a comprehensive CLI tool.
- Advantages of Jest include easy test control, interactive mode, excellent documentation, and comprehensive mocking capabilities.
- Jest's main characteristics include zero configuration setup, isolation of tests, snapshot testing, and a rich API.
- To get started with Jest, you need to install it globally, create a project, add Jest as a dev dependency, write tests, and run them.
- Jest's vocabulary includes mocks, spies, describe blocks, matchers, setup and teardown functions, and snapshot testing.
- Mock functions in Jest help test the links between code, while spies track calls to object methods.
- The Jest basics cover describe blocks, it/tests, matchers for assertions, setup/teardown functions, and snapshot testing for React front ends.
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