nikhil nikkaroraa

Amazon EC2 (Elastic Compute Cloud)

Credits

Video: https://www.youtube.com/watch?v=kMMybKqC2Y0

Overall layout of EC2

Each AWS region contains multiple availability zones
Each availability zone has got its own networking domain, power domain, cooling subsystems

Setting up Vercel with Cloudflare

Go to "Domains" section in Vercel
Type out your domain, and click on "Add"
It'll give you an "A" record to enter in the DNS settings
Navigate to the Cloudflare dashboard
- From there go to DNS, and add the A record there with Proxy status being set to "true"
- I also had an "A" record which was pointing to Namecheap, since I bought the domain from there. Make sure to remove that.
  - "A" record is basically an Address record that maps the domain name to the IP address of the computer hosting the domain
Add a CNAME record to handle "www"

What is REM in CSS?

Hey guys, I was talking to Bo and we were thinking about start using rem unit on the projects, because it's more responsible.

The main difference between rem and em is that em is relative to element's closest parent font-size, e.g:

HTML:

Lifecycle of a web-app

Browser-side and Server-side

Client makes a request from the browser which then goes to the server to fetch some resources. The server is a really complex thing that does all the logic handling, computations and provides us with the things that we eventually want to show on the website. That covers authorization, authentication and interaction with the database. Authentication

Authentication is the process of verifying who you are. When you log on to a PC with a user name and password you are authenticating.

AWS

Amazon SES
- Amazon Simple Email Service
- https://aws.amazon.com/getting-started/tutorials/send-an-email/
Amazon EC2
- https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts.html
Elastic Beanstalk
- AWS Elastic Beanstalk is an orchestration service offered from Amazon Web Services for deploying infrastructure which orchestrates various AWSservices, including EC2, S3, Simple Notification Service (SNS), CloudWatch, autoscaling, and ElasticLoad Balancers.

Docker Commands, Help & Tips

Show commands & management commands

$ docker

Docker version info

5. Public Class Fields in JS

I have found a collection of blogs that will help you understand it. The links are as follows:

4. How "this" keyword works with functions JS

To access any variable or any method that is a part of a JavaScript object, we use "this" keyword.

For example,

function Dog(name) {
 if (name) { this.name = name; }

	const createResolver = (resolver) => {
	const baseResolver = resolver;
	baseResolver.createResolver = (childResolver) => {
	const newResolver = async (parent, args, context, info) => {
	await resolver(parent, args, context, info);
	return childResolver(parent, args, context, info);
	};
	return createResolver(newResolver);
	};
	return baseResolver;

	echo -n <variable> \| gcloud kms encrypt --plaintext-file=- --ciphertext-file=- --location=global --keyring <keyring> --key <key> \| base6
	4