Gagan Srai gsrai

Identity and Access Management and Amazon Resource Names

An AWS account has resources and users. It also has an account-id.

By default a root user is created, and this user has complete and unrestricted access to all resources in your AWS account.

AWS IAM is used to manage users (identity) and resource access (access management) on an AWS account.

All AWS resources have a unique identifier known as an ARN.

Cognito

Securing something is about restricting access or access control. To control access, you need to differentiate those who have access and those who don't. This inherently requires you to be able to identify the user (authentication). To identify users, you need an identity provider, a service that stores and provides user information aka identity. Once you can identify users, you need to associate a user/s to a permissions list or ruleset.

The Cognito User Pool is an identity provider, and the Cognito Identity Pool federates identities from multiple identity providers and then applys a ruleset via IAM roles.

Install Python on Mac

brew install pyenv
Add this to your ~/.zshrc:

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/shims:$PATH"

C vs C++ vs Rust (and Clojure, Python & Go)

source

Original

int calculate(int bottom, int top)
{
    if (top > bottom)

	#!/usr/bin/env bash

	GO_FILE_NAME="go1.18.1.darwin-arm64.tar.gz" # find filename on https://go.dev/dl/

	# usage:
	# chmod u+x upgrade_go.sh
	# sudo ./upgrade_go.sh

	sudo mv /usr/local/go /usr/local/_go_old
	mkdir /tmp/downloads

	package main

	import "fmt"

	type Node[T any] struct {
	Next *Node[T]
	Value T
	}

	type LinkedList[T any] struct {

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<title>center a div</title>
	<style>
	.container {
	height: 100vh;
	display: flex;

	#!/usr/bin/env bash

	# find filename on https://go.dev/dl/
	GO_FILE_NAME="go1.19.3.darwin-arm64.tar.gz"

	# usage:
	# chmod u+x install_go.sh
	# sudo ./install_go.sh

	mkdir /tmp/downloads

	set termguicolors

	" Set compatibility to Vim only.
	" be vim no vi.
	set nocompatible

	" Disable the default Vim startup message.
	set shortmess+=I

	" Helps force plug-ins to load correctly when it is turned back on below.

	package utils

	func GetKeys[K comparable, V any](m map[K]V) []K {
	keys := make([]K, 0, len(m))
	for k := range m {
	keys = append(keys, k)
	}
	return keys
	}