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Public study materials

• SQL (SQL)
  • SQL Fundamentals · basic
  • Database Operations · basic
  • Table Operations · basic
  • CRUD Operations · basic
  • Filtering & Operators · basic
  • SQL Functions · basic
  • GROUPING Data · basic
  • Joins · medium
  • Constraints · basic
  • Subqueries · medium
  • Set Operators · medium
  • Views · medium
  • Indexes · medium
  • Normalization · advance
  • Transactions · advance
  • Stored Procedures & Functions · advance
  • Triggers · advance
  • Advanced SQL · advance
  • Query Optimization · advance
  • Database Design · advance
  • SQL Security · advance
  • Backup & Recovery · advance
  • Questions · interview questions
• System Designing (System Designing)
  • Day-1 : What is system Designing ? · basic
  • Day-2 : Vertical vs. Horizontal Scaling · basic
  • Day-3:How to do vertical scaling ? · basic
  • Day4:How to do horizaontal scaling ? · basic
  • Day:5TCP vs UDP · basic
  • Day6:IP & DNS · basic
  • Day7:Client-Server Model · basic
  • Day8:HTTP & HTTPS · basic
  • Databases (SQL vs NoSQL) · medium
  • Caching · medium
  • Day9:Latency & Throughput · basic
  • Load Balancing · medium
  • Indexes & Query Optimization · medium
  • CDN · medium
  • Proxies · medium
  • Message Queues · medium
  • Horizontal vs Vertical Scaling · medium
  • Database Replication · advance
  • Database Sharding · advance
  • Consistent Hashing · advance
  • CAP Theorem · advance
  • Rate Limiting · advance
  • Service Discovery · advance
  • Event-Driven Architecture · advance
  • API Gateway · advance
  • Distributed Consensus · expert
  • Microservices · expert
  • Observability · expert
  • Idempotency · expert
  • PACELC Theorem · expert
  • Two-Phase Commit · expert
  • Back-of-Envelope Estimation · expert
  • Designing for Failure · expert
• Django (Django)
  • What is Django · basic
  • Installing Django · basic
  • Features of Django · basic
  • MVT Architecture · basic
  • Django vs Flask · basic
  • Creating Project & Creating App · basic
  • Django Project Structure · basic
  • URL Routing · basic
  • Views · basic
  • Templates · basic
  • Static & Media Files · medium
  • Models · medium
  • ORM (Object Relational Mapping) · medium
  • Model Relationships · medium
  • Migrations · medium
  • Django Admin · medium
  • Forms · medium
  • Authentication · medium
  • Authorization · medium
  • Middleware · medium
  • Signals · medium
  • Class Based Views Deep Dive · advance
  • Generic Views · advance
  • File Handling · advance
  • Django REST Framework (DRF) · advance
  • Advanced ORM · advance
  • Caching · advance
  • Asynchronous Django · advance
  • Background Tasks · advance
  • Interview Questions · interview-questions
• Python (Python)
  • Python Fundamentals · basic
  • Control Flow · basic
  • Strings · basic
  • Collections / Data Structures · basic
  • Functions · basic
  • Modules and Packages · basic
  • File Handling · basic
  • Exception Handling · basic
  • Object-Oriented Programming (OOP · medium
  • Advanced Python Concepts · advance
  • Functional Programming · advance
  • Multithreading & Multiprocessing · advance
  • Async Programming · advance
• JavaScript (JavaScript)
  • JS Introduction · basic
  • Variables & Data Types · basic
  • Operators · basic
  • Control Flow · basic
  • Functions · basic
  • Scope & Execution · basic
  • Closures · basic
  • Objects · basic
  • Arrays · basic
  • Strings · basic
  • DOM Manipulation · basic
  • Browser APIs · medium
  • Asynchronous JavaScript · medium
  • Fetch & APIs · medium
  • ES6+ Features · medium
  • OOP in JavaScript · medium
  • Prototype & Inheritance · advance
  • Advanced Functions · advance
  • Memory Management · advance
  • Error Handling · advance
  • Modules · advance
  • Advanced Async Concepts · advance
  • Functional Programming · advance
  • JavaScript Internals · advance
  • Performance Optimization · advance
• Angular (Angular)
  • Angular Fundamentals · basic
  • Project Structure · basic
  • Components & Templates · basic
  • Data Binding · basic
  • Directives · basic
  • Pipes · basic
  • Component Communication · basic
  • Lifecycle Hooks · basic
  • Routing Basics · basic
  • Routing · basic
  • API Calls · basic
  • Forms · medium
  • Routing · medium
  • Services & Dependency Injection · medium
  • RxJS & Observables · medium
  • Authentication & Security · medium
  • Component Interaction · medium
  • State Management Basics · medium
  • Error Handiling · medium
  • Perfomance Basic · medium
  • Real World Features · medium
  • Advanced Angular Architecture · advance
  • Change Detection · advance
  • Advanced RxJS · advance
  • State Management · advance
  • Dynamic Rendering · advance
  • Perfomance Optimization · advance
  • Modern Angular · advance
• STAR (Situation, Task, Action, and Result) (Situation Based Questions)
  • Full Stack STAR Questions · basic
• Express.js — Web APIs & middleware (expressjs)
  • Application setup · basic
  • Routing deep dive · basic
  • 1. MVC / Layered Architecture · medium
  • Validation · medium
  • File uploads · medium
  • Sessions & auth (stateful) · medium
  • Passport & strategies · medium
  • Templating & SSR · medium
  • WebSockets & SSE · medium
  • Security middleware · advance
  • Reverse proxies & trust · advance
  • Performance · advance
  • API design & versioning · advance
  • Testing with Supertest · advance
  • GraphQL & tRPC (overview) · advance
  • Deployment checklist · advance
  • Middlewares · basic
  • Request & Response · basic
• Node.js — Server-side JavaScript (nodejs)
  • Getting started · basic
  • JavaScript on the server · basic
  • CommonJS modules · basic
  • ES modules (ESM) · basic
  • npm & package management · basic
  • Asynchronous JavaScript in Node · basic
  • The event loop · basic
  • Essential core utilities · basic
  • process & configuration · basic
  • File system basics · basic
  • HTTP & HTTPS servers · medium
  • Streams · medium
  • Events & EventEmitter · medium
  • Advanced filesystem · medium
  • crypto · medium
  • Compression & encoding · medium
  • Child processes · medium
  • net, dgram & DNS · medium
  • readline, timers & scheduling · medium
  • Testing & diagnostics (intro) · medium
  • Worker threads · advance
  • cluster & multi-process scaling · advance
  • Performance & tuning · advance
  • Debugging & observability · advance
  • Security hardening · advance
  • Native addons & N-API · advance
  • Architecture patterns · advance
  • Graceful shutdown · advance
  • 100 Questions · interview questions
• MongoDB — Documents & data modeling (MongoDB)
  • Introduction · basic
  • Shell, Compass & tools · basic
  • Databases & collections · basic
  • CRUD operations · basic
  • Indexes deep dive · medium
  • Explain plans & performance · medium
  • Aggregation framework · medium
  • Schema design patterns · medium
  • Mongoose basics · medium
  • Mongoose advanced · medium
  • Drivers & connection · medium
  • Operators for updates & arrays · medium
  • Replication & read preferences · advance
  • Write concern & read concern · advance
  • Multi-document transactions · advance
  • Change streams · advance
  • Sharding (overview) · advance
  • Atlas Search & full-text · advance
  • GridFS & large files · advance
  • Backup, restore & ops · advance
• AWS Crash Course (AWS)
  • What is Cloud ? · basic
  • What is AWS ? · basic
  • If not cloud ? · basic
  • Cloud Computing · basic
  • AWS Pricing · basic
  • AWS Shared Responsibility Model · basic
  • AWS Management Console · basic
  • AWS SDKs · basic
  • AWS IAM · medium
  • Users, Groups, Roles · medium
  • Policies · medium
  • AWS Organizations · medium
  • AWS Cognito · medium
  • AWS Directory Service · medium
  • AWS KMS (Key Management Service) · medium
  • AWS Secrets Manager · medium
  • AWS Shield · medium
  • AWS WAF · medium
  • AWS Inspector · medium
  • AWS GuardDuty · medium
  • EC2 · advance
  • Launching EC2 Instances · advance
  • EBS Volumes · advance
  • Security Groups · advance
  • Key Pairs · advance
  • Elastic IP · advance
  • User Data Scripts · advance
  • Auto Scaling · advance
  • Load Balancers · advance
  • ALB · advance
  • NLB · advance
  • Serverless Compute ,AWS Lambda, Lambda Layers · advance
  • Event-Driven Architecture · advance
  • ECS · advance
  • EKS · advance
• System Architecture (System Architecture)
  • Fundamentals of System Architecture · basic
  • Distributed System Basics · basic
  • System Reliability Concepts · basic
  • Scaling Concepts · basic
  • Networking Basics · basic
  • Web Communication · basic
  • API Communication · basic
  • Proxy & Delivery Systems · basic
  • Web Architecture Basics · basic
  • Rendering Architectures · basic
  • Frontend Advanced Concepts · basic
  • Message Queue Basics · medium
  • What is Load Balancer · medium
  • Load Balancing Algorithms · medium
  • API Design Basics · medium
  • API Protection · medium
  • Authentication Basics · medium
  • Security Tokens · medium
  • Security Threats · medium
  • Encryption & Security · medium
  • SQL Database Basics · medium
  • SQL Scaling Concepts · medium
  • NoSQL Databases · medium
  • Database Optimization · medium
  • Replication Strategies · medium
  • Caching Basics · medium
  • Cache Storage Systems · medium
  • Cache Strategies · medium
  • Event-Driven Systems · advance
  • Queue Reliability · advance
  • Microservices Basics · advance
  • Microservice Communication · advance
  • Distributed Transactions · advance
  • DevOps Basics · advance
  • Automation Tools · advance
  • Deployment Strategies · advance
  • Monitoring Basics · advance
  • Monitoring Tools · advance
  • Distributed System Concepts · advance
  • Distributed Algorithms · advance

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CVS Health · MO - Saint Louis

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