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Sandeep's Learning Hub Documentation

website·Indexed 32 days ago

https://learn.sandeep.cv

A personal documentation hub and learning journey covering full-stack development. Includes guides on React, Node.js, TypeScript, Redux Toolkit, Docker, Socket.io, and Google OAuth, as well as CS fundamentals like Computer Networks and tools like Vim.

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What's inside Sandeep's Learning Hub

  1. Overview of React Final Form

    React Final Form is a framework-agnostic form state management library for React designed for high performance and flexibility. Key features include minimal re-renders, support for both synchronous and asynchronous validation, and extensibility via decorators and mutators. It operates without dependencies on Redux or context providers.

  2. Overview of Redis architecture and characteristics

    Redis (Remote Dictionary Server) is an open-source, in-memory NoSQL data structure store used as a database, cache, and message broker. Unlike traditional disk-based databases, Redis stores data primarily in RAM for extreme performance. It is single-threaded, utilizing an event loop to handle multiple connections efficiently, and supports high availability through replication and clustering. The server typically listens on port 6379.

  3. Overview of ngrok

    ngrok is a tool that creates secure tunnels from the public internet to a local machine. It allows developers to expose local servers behind NATs and firewalls, test webhooks from third-party services (such as Stripe, GitHub, or Twilio), and share local development sites with others.

  4. Understand 5G Network Architecture and Features

    5G introduces high-speed, low-latency connectivity through specific architectural advancements.

    Key Features:

    • eMBB (Enhanced Mobile Broadband): High data rates and capacity.
    • URLLC (Ultra-Reliable Low-Latency Communications): Critical for real-time applications.
    • mMTC (Massive Machine-Type Communications): Supports a huge number of IoT devices.

    Architecture Components:

    • Radio Access Network (RAN), Core Network, Edge Computing, and Network Slicing (creating multiple virtual networks on a single physical infrastructure).

  5. Understand Microservice Architecture core concepts

    Microservices is an architectural style that structures an application as a collection of small, independent services. Each service is focused on a single business capability and communicates via APIs (typically HTTP/REST or messaging queues).

    Key features include:

    • Single Responsibility: Each service handles one specific function (e.g., auth, billing).
    • Independent Deployment: Services can be updated without redeploying the entire application.
    • Technology Agnostic: Different services can use different programming languages or databases.
    • Resilience: Isolation ensures a failure in one service does not crash the entire system.
    • Scalability: Individual services can be scaled independently based on demand.

  6. Understand Cloud Service Models for Networking

    Cloud networking services are categorized by the level of management provided:

    • IaaS (Infrastructure as a Service): Provides raw networking building blocks like Virtual Networks, Load Balancers, VPN Gateways, and Network Security Groups.
    • PaaS (Platform as a Service): Provides managed networking services such as Application Gateways, API Management, Service Bus, and Event Hubs.
    • SaaS (Software as a Service): End-user applications like Web Apps, Email Services, Collaboration Tools, and CRM Systems.

  7. Understand Network Function Virtualization (NFV)

    NFV replaces dedicated network hardware (like firewalls or routers) with virtualized software instances.

    Core Components:

    • Virtual Network Functions (VNFs): The software implementation of a network function (e.g., Virtual Firewalls, Virtual Load Balancers, Virtual Routers).
    • NFV Infrastructure (NFVI): The physical and virtual resources (compute, storage, network) that support VNFs.
    • NFV Management and Orchestration (MANO): The framework for managing the lifecycle of VNFs.

  8. Core Docker terminology reference

    Quick reference for fundamental Docker concepts:

    • Containerization: Creating isolated, portable packages of software.
    • Docker: The tool used to implement containerization.
    • Image: A read-only blueprint for a container.
    • Container: A running instance of an image with a read-write layer on top.
    • Dockerfile: The recipe/script used to build a Docker Image.

  9. Perform type assertions in TypeScript

    Type assertions allow you to tell the compiler that you know more about a value's type than it can infer. This can be done using the angle-bracket syntax or the as syntax.
    let someValue: any = "this is a string";

// Angle-bracket syntax
let strLength: number = (<string>someValue).length;

// as syntax
let strLength2: number = (someValue as string).length;

  10. Microservice architecture best practices

    Adhere to these guidelines for sustainable microservice implementation:

    • Service Design: Keep services small and focused; use Domain-Driven Design (DDD) bounded contexts; implement circuit breakers for external dependencies.
    • Data Management: Ensure each service owns its own data; use Event Sourcing and Eventual Consistency; use CQRS for complex queries.
    • Security: Use API Gateways for security enforcement; encrypt data at rest and in transit; implement rate limiting.
    • Testing: Implement a pyramid of tests: Unit tests (per service) $\rightarrow$ Integration tests (interactions) $\rightarrow$ Contract tests (API compatibility) $\rightarrow$ E2E tests (critical journeys).

  11. Orchestrate multi-container apps with Docker Compose

    Docker Compose is used to define and run multi-container applications. Instead of manually running multiple docker run commands for a web app, database, and cache, you define all services in a single docker-compose.yml file to manage them as a single stack.

  12. Understand Software-Defined Networking (SDN) Architecture

    SDN decouples the network control logic from the hardware that forwards traffic. Its architecture consists of three planes:

    • Control Plane: The centralized intelligence that decides how traffic should be handled.
    • Data Plane: The physical or virtual devices that forward traffic based on the control plane's instructions.
    • Management Plane: Used for network orchestration and configuration.

    Key Benefits: Centralized management, programmable network behavior, dynamic configuration, and reduced hardware costs.