• Web Applications
• Infrastructure and App deployment
• AWS - Cloud Computing and Web Services
• Databases
• BackendServices
• Infrastructure Types
• Dockers
• Advance Docker Concepts
• Containers
• Microservices
• Kubernetes
• Cloud providers
• CI/CD
• Multi-cloud

• DevOps
• Design->Develop->Test->Deploy

• Linear sequence.
• No overlap

• Sprint, Iteration, Short release cycle. 15 days or 1 month

• Pay As You Go Model in Cloud Computing

• Elastisity : Resource Utilization

• Cost Efficient

• It is set of tools,practices that decrease the cost, time and complexity of delivering s/w app by unifying both s/w development and infrastructure managment proceses.

• It automate the process

• Release, testing (unit,Integration,Stress test), security, scalability

• Internet - Uses TCP/IP protocol
• WWW - App built on Internet. URL/ URI and HTML
• Client Server Architecture
• Domain Resolution - Name of IP address
• Load Balancing

• Allow user interation
• E comerce, Games, Online learning site Ex. Google/FB/Gmail/YouTube

• Combination of Text/Image/Video and documents
• HTML, CSS, JS
• Blog and News Sites, Wikipedia

• Client: Mobile, Browser, IOT devices

• Server : Mail server, File Server

• IP address and Ports

• API to interact with Client and Server

• Http Request

• GET/POST/PUT/DELETE

• Protocol : http

• Domain Name: google.com

• Port : 80

• Query Param : key1

https://www.google.com/some/api?key1=value1,key2=value2
Headers : Key-Pair
Body : Content
Status Code : 2xx/4xx/5xx

• Presentation : Client side app [Fornt End]

• Ex. Angular JS/ React av Vue.js

• With HTML, CSS and JS

• Bussiness Logic : Server Side App

• Ex. Node.js, Python, PHP, Java

• DB Layer : Storage and persistence

• Row and Column

• PK and FK

• Data Types

• Relations

• Tables and Collections

• RDBMS : In Table formate

• My SQL/ Mongo DB / Oracle / PostGreSQL

• Document DB : In Json Formate Ex. Mongo DB, Amazon Document, Azure Cosmos DB

• Graph DB : SQL DB that store data without schemas. Data store in Nodes and connected with relations called edges Ex. Arago DB,Neo4j DB

• Normalization

• In memory DB for caching
• Message Bus for Async communication
• CDN for serving and caching
• Static content
• Workflow management platform for organizing processes

• 142.250.203.238 is eqals to www.google.com

• Act of distributing traffic across multiple replicas of a service
• Performance/Scalability/Availability/Security
• Algorithms : Round Robin, Least connection, Least Response Time, Least Bandwidth
• Health Check : Protocol, Port, Path, Interval, Threashold Count

• Monolithic : Modular approach

• Ex. Catalog Module/Customer Module/Order Module/ Payment Module

• Micro Services : Services approach

• Ex. Catalog Service, Customer Service, Order Service, Payment Service

https://www.udemy.com/course/intro-fullstack-devops/learn/lecture/35594770#overview