Web Application

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Web Application

Hypertext Transfer Protocol (HTTP)

HTTP Request

REQUEST BODY

HEADERS

..More

Metadata

Response Format Requests

Ex: 'ACCEPT: */*'

Client Info

Ex: 'USER-AGENT: MOZILLA/5.0'

Method

Ex: POST/GET/PUT/DELETE

The host, path, and query string

URL

Query String

A representation of the query sent to the database

Path

The path is the "location" of the files being accessed on the website

Subdomain

The subdomain is an optional part of the domain.

Domain

Ex: [Protocol] :// [Subdomain] . [Second Level Domain] . [Top Level Domain] / [Page Path] Eg: [ HTTPS ] :// [ blog ] . [ hubspot ] . [ com ] / [what-is-a-domain]

The host of this URL > https://www.youtube.com/cat would be: www.youtube.com

Protocol

Ex: HTTP, FTP, and MAILTO

C.R.U.D

Delete

Method: Delete

Update

Method: Put

Read

Method: Get

Create

Method: Post

Modern Web Design Solutions

Tiered Architectures

Front End

Browser/Mobile/Desktop Apps

Edge Services

Customer Services/Web Apps

Business Logic

Backend Services

Content Delivery Network (CDN)

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Auto Scaling Servers

File Storage

Databases

Where will the software live?

Cloud

You pay a subscription fee for the cloud services, which include servers, network and software all maintained by the cloud provider.

Hosted

You purchase and own the software. The infrastructure for the software you purchased is remotely hosted for you.

On-Premise

You maintain the network infrastructure, power, servers, operating system, database software, etc.

Web Architecture

Application Layer

DNS

Presentation Layer

HTTP/S

Session Layer

Transport Layer

TCP/IP

Network Layer

Data Link Layer

SQL, NoSQL, RDBMs

Physical Layer